Features
• Input voltage from 1.6 to 5.5 V
• Very low-dropout voltage (300 mV typ. at 1 A load)
• Low quiescent current (35 µA typ. at no-load, 1 µA max. in off mode)
• Output voltage tolerance: ± 2.0% at 25 °C
• 1.2 A guaranteed output current
• Wide range of output voltages available on request: 0.8 V to 5 V with 50 mV
step and adjustable
• Logic-controlled electronic shutdown
• Compatible with ceramic capacitor COUT = 1 µF
• Internal current and thermal limit
• Available in DFN6 (2x2), DFN6 (3x3) mm, SO8-batwing and PPAK packages
• Temperature range: -40 °C to 125 °C
• Reverse current protection
• Output discharge function (optional)
Applications
• Consumer
• Computer
• Battery-powered systems
• Low voltage point-of-load
• USB-powered devices
Description
The LDL112 is a low-dropout linear regulator, which can provide a maximum current
of 1.2 A, with a typical dropout voltage of 300 mV.
It is stabilized with a ceramic capacitor on the output.
The very low drop voltage, low quiescent current and reverse current protection
features make it suitable for low power battery-powered applications.
The enable logic control function puts the LDL112 in shutdown mode allowing a total
current consumption lower than 1 µA.
The device is equipped with current limit and thermal protection.
Maturity status link
LDL112
1.2 A low quiescent current LDO with reverse current protection
LDL112
Datasheet
DS10321 - Rev 3 - February 2019
For further information contact your local STMicroelectronics sales office.
www.st.com
1Diagram
Figure 2. Block diagram
800mV
PMOS
OPA MP
VFB
EN Enable
Internal
enable
Reverse
current
protection
VOUT
VIN
Thermal
protection
*
Current limit
GND
Bandgap
reference
800mV
PMOS
OPA MP
VFB
Bandgap
reference
EN Enable
Internal
enable
Reverse
current
protection
VOUT
VIN
Thermal
protection
*
Current limit
GND
ADJ
Fixed version Adjustable version
AM14036V1
Note: (*) The output discharge function is optional.
LDL112
Diagram
DS10321 - Rev 3 page 2/32
2Pin configuration
Figure 3. Pin connection DFN6 (3x3) and DFN6 (2x2) (top view)
Figure 4. Pin connection PPAK and SO8 (top view)
Table 1. Pin description
Symbol Function
VIN LDO input voltage
GND Common ground
EN Enable pin logic input: low = shutdown, high = active. Don't leave this pin floating
ADJ Adjustable pin (on adjustable version)
VOUT LDO output voltage
Exposed pad Must be connected to GND
NC Not connected
LDL112
Pin configuration
DS10321 - Rev 3 page 3/32
3Typical application
Figure 5. Typical application circuits
AM14039V1
Adjustable version
VIN
GND
VI
EN
CIn
VO
VOUT
COut
LDL112
OFF
ON
1µF 1µF
R1
R2
VIN
GND
VI
EN
CIn
VO
VOUT
COut
LDL112
OFF
ON
1µF 1µF
Fixed version
LDL112
Typical application
DS10321 - Rev 3 page 4/32
4Maximum ratings
Table 2. Absolute maximum ratings
Symbol Parameter Value Unit
VIN DC input voltage - 0.3 to 7 V
VOUT DC output voltage - 0.3 to VI + 0.3 V
VEN Enable input voltage - 0.3 to VI + 0.3 V
VADJ ADJ pin voltage 2 V
IOUT Output current Internally limited mA
PDPower dissipation Internally limited mW
TSTG Storage temperature range - 65 to 150 °C
TOP Operating junction temperature range - 40 to 125 °C
Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional
operation under these conditions is not implied. All values are referred to GND.
Table 3. Thermal data
Symbol Parameter DFN6 (3x3) DFN6 (2x2) SO8 PPAK Unit
RthJA Thermal resistance
junction-ambient 55 65 55(1) 100 °C/W
RthJC Thermal resistance
junction-case 10 15 20 8 °C/W
1. Considering 6 cm² of copper board heatsink.
LDL112
Maximum ratings
DS10321 - Rev 3 page 5/32
5Electrical characteristics
TJ = 25 °C, VIN = VOUT(NOM) + 0.5 V (for VOUT(NOM) ≤ 1 V, VIN = 2.1 V), CIN = COUT = 1 µF, IOUT = 5 mA, VEN =
VIN, unless otherwise specified.
Table 4. LDL112 electrical characteristics (fixed version)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VIN Operating input voltage 1.6 5.5 V
VOUT VOUT accuracy
IOUT = 5 mA, TJ = 25 °C -2.0 2.0 %
IOUT = 5 mA, -40 °C < TJ < 125 °C -3.0 3.0 %
ΔVOUT Static line regulation (1) VOUT(NOM) + 0.5 V < VIN ≤ 5.5 V (2) 0.05 0.1 %/V
ΔVOUT Static load regulation IOUT = 0 mA to 1.2 A, VIN > 2.1 V 15 30 mV
VDROP Dropout voltage (3)
IOUT = 1 A, VOUT = 3.3 V 300
mV
IOUT = 1.2 A,VOUT = 3.3 V
-40 °C < TJ < 125 °C 350 600
eNOutput noise voltage
10 Hz to 100 kHz, IOUT = 10 mA
VOUT = 3.3 V 135 µVRMS
SVR Supply voltage rejection
VIN = VOUT(NOM) + 0.5 V +/- VRIPPLE (2)
VRIPPLE = 0.2 V frequency = 1 kHz
IOUT = 10 mA
57 dB
IQQuiescent current
IOUT = 0 mA, -40 °C < TJ <125 °C 35 70
µA
IOUT = 1.2 A, VOUT(NOM) + 1 V,
-40 °C < TJ < 125 °C (2) 250 400
VIN input current in off mode: VEN = GND 0.1 1
ISC Short-circuit current RL = 0, VIN > 2.1 V 1.4 2 A
VEN
Enable input logic low
VIN = VOUT(NOM) + 0.5 V to 5.5 V,
-40 °C < TJ < 125 °C (2) 0.35
V
Enable input logic high
VIN = VOUT(NOM) + 0.5 V to 5.5 V,
-40 °C < TJ < 125 °C (2) 1.4
IEN Enable pin input current VEN = VIN 100 nA
TSHDN
Thermal shutdown 165
°C
Hysteresis 20
COUT Output capacitor Capacitance (see Section 7 Typical
performance characteristics)1 10 µF
1. Not applicable for Vout(nom) > 4.5 V.
2. For VOUTNOM lower than or equal to 1 V, VIN = 2.1 V.
3. Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value.
LDL112
Electrical characteristics
DS10321 - Rev 3 page 6/32
TJ = 25 °C, VIN = 2.1 V, CIN = COUT = 1 µF, IOUT = 5 mA, VEN = VIN, unless otherwise specified.
Table 5. LDL112 electrical characteristics (adjustable version)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VIN Operating input voltage 1.6 5.5 V
VADJ VADJ accuracy
IOUT = 5 mA, TJ = 25 °C 784 800 816 mV
IOUT = 5 mA, -40 °C < TJ < 125 °C -3.0 3.0 %
ΔVOUT Static line regulation (1) 2.1 V ≤ VIN ≤ 5.5 V, IOUT = 1 mA (2) 0.05 0.1 %/V
ΔVOUT Static load regulation IOUT = 0 mA to 1.2 A, VIN > 2.1 V 6 20 mV
VDROP Dropout voltage (3)
IOUT = 1 A, VOUT = 3.3 V 300
mV
IOUT = 1.2 A, VOUT = 3.3 V
-40 °C < TJ < 125 °C 350 600
eNOutput noise voltage 10 Hz to 100 kHz, IOUT = 10 mA 60 µVRMS
IADJ Adjust pin current 0.130 1 µA
SVR Supply voltage rejection
VIN = VOUTNOM + 0.5 V +/- VRIPPLE
VRIPPLE = 0.2 V, freq. = 1 kHz,
IOUT = 10 mA (2)
53 dB
IQQuiescent current
IOUT = 0 mA, -40 °C < TJ < 125 °C 35 70
µA
IOUT = 1.2 A, 2.1 V < VIN < 5.5 V,
-40 °C < TJ < 125 °C 240 400
VIN input current in off mode: VEN = GND 0.1 1
ISC Short-circuit current RL = 0, VIN > 2.1 V 1.4 2 A
VEN
Enable input logic low VIN = 2 V to 5.5 V, -40 °C < TJ < 125 °C (2) 0 0.35
V
Enable input logic high VIN = 2 V to 5.5 V, -40 °C < TJ < 125 °C (2) 1.4
IEN Enable pin input current VEN = VIN 100 nA
TSHDN
Thermal shutdown 165
°C
Hysteresis 20
COUT Output capacitor Capacitance (see Section 7 Typical
performance characteristics)1 10 µF
1. Not applicable for Vout(nom) > 4.5 V.
2. For VOUT lower than or equal to 1 V, VIN = 2.1 V.
3. Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value.
LDL112
Electrical characteristics
DS10321 - Rev 3 page 7/32
6Application information
6.1 Thermal and short-circuit protections
The LDL112 is self-protected from short-circuit condition and overtemperature. When the output load is higher
than the one supported by the device, the output current increases until the limit of typically 2 A is reached, at this
point the current is kept constant even when the load impedance is zero.
Thermal protection acts when the junction temperature reaches 165 °C, therefore the IC shuts down. As soon as
the junction temperature falls again below the thermal hysteresis value the device starts working again.
In order to calculate the maximum power that the device can dissipate, keeping the junction temperature below
the TOP , the following formula is used:
Equation 1
PDMAX= (125 - TAMB)/RTHJA
6.2 Output voltage setting for ADJ version
In the adjustable version, the output voltage can be set from 0.8 V up to the input voltage minus the voltage drop
across the pass transistor (dropout voltage), by connecting a resistor divider between the ADJ pin and the output,
thus allowing remote voltage sensing.
The resistor divider could be selected by the following equation:
Equation 2
VOUT = VADJ (1 + R1 / R2), with VADJ = 0.8 V (typ.)
It is recommended to use resistors with values in the range of 10 kΩ to 50 kΩ. Lower values can also be suitable,
but current consumption increases.
6.3 Reverse current protection
The device avoids the reverse current to flow from output to input during any operating condition (with enable pin
in high or low status).The reverse current protection acts in particular during fast turning on/off operations or when
another power supply (with higher voltage than the input one) is connected to the output port. If a power supply
with lower voltage than the LDO output voltage is connected to VOUT pin, LDO enters the current protection
status, causing high power dissipation.
In the application, the LDL112 reverse current protection acts in the following cases:
1. Off-state, EN pin is at GND level, VOUT > [VIN + 100 mV]. In this case the device power pass element
(MOSFET) is off, the bulk and gate are switched to VOUT and therefore all possible current paths from VOUT
to VIN are interrupted.
2. On-state, EN pin is at high level and VOUT > VOUT(nominal) . In this condition, VOUT is higher than the
nominal level, so the device op-amp works in open loop and the power element is off. VGS is zero, the bulk
and gate are switched to VOUT (where VOUT > [VIN + 100 mV]) therefore all possible current paths from
VOUT to VIN are interrupted.
3. On-state, EN pin is at high level and VOUT< VOUT(nominal) . In this condition VOUT is lower than the
nominal level, so the op-amp works in open loop with the power MOSFET on. VGS is maximal so the power
channel conducts with very low RDS(on). When VOUT > VIN the current can flow from VOUT to VIN until the
condition VOUT > (VIN + 100 mV) is reached.
LDL112
Application information
DS10321 - Rev 3 page 8/32
7Typical performance characteristics
(CIN = COUT = 1 µF, VEN to VIN, T = 25 °C unless otherwise specified)
Figure 8. Output voltage vs. temperature
(VOUT = 3.3 V, IOUT = 5 mA)
AM14040V1
VIN=3.8V, IOUT=5mA, VOUT=3.3V
3
3.1
3.2
3.3
3.4
3.5
3.6
-60 -40 -20 0 20 40 60 80 100 120 140
Output Voltage [V]
Temperature [°C]
Figure 9. Output voltage vs. temperature
(VOUT = 3.3 V, IOUT = 1.2 A)
AM14041V1
3
3.1
3.2
3.3
3.4
3.5
3.6
-60 -40 -20 0 20 40 60 80 100 120 140
Output Voltage [V]
Temperature [°C]
VIN=3.8V, IOUT=1.2A, VOUT=3.3V
Figure 10. Output voltage vs. temperature
(VOUT = VADJ, IOUT = 5 mA)
AM14042V1
0.7
0.72
0.74
0.76
0.78
0.8
0.82
0.84
0.86
0.88
0.9
-60 -40 -20 0 20 40 60 80 100 120 140
Output Voltage [V]
Temperature [
°C]
VIN=1.6V, IOUT=5mA, VOUT=VADJ
Figure 11. Output voltage vs. temperature
(VOUT = VADJ, IOUT = 1.2 A)
AM14043V1
VIN=2V, IOUT=1.2A, VOUT=VADJ
LDL112
Typical performance characteristics
DS10321 - Rev 3 page 9/32
Figure 12. Line regulation vs. temperature
AM14044V1
VIN=3.8V to 5.5V, IOUT=1.2A, VOUT=3.3V
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
0.18
0.2
-60 -40 -20 0 20 40 60 80 100 120 140
Line regulation [%/V]
Temperature [°C]
Figure 13. Load regulation vs. temperature
AM14045V1
VIN=3.8V, IOUT=from 0mA to 1.2A , VOUT=3.3V
0
5
10
15
20
25
30
35
40
-60 -40 -20 0 20 40 60 80 100 120 140
Load regulation [mV]
Temperature [°C]
Figure 14. Quiescent current vs. temperature
(IOUT = 0 mA)
AM14046V1
VIN=3.8V, IOUT= 0mA, VOUT=3.3V
0
10
20
30
40
50
60
70
80
90
100
-60 -40 -20 0 20 40 60 80 100 120 140
Quiescent current [µA]
Temperature [°C]
Figure 15. Quiescent current vs. temperature
(IOUT = 1.2 A)
AM14047V1
VIN=3.8V, IOUT= 1.2A, VOUT=3.3V
0
50
100
150
200
250
300
350
400
450
500
-60 -40 -20 0 20 40 60 80 100 120 140
Quiescent current [µA]
Temperature [°C]
Figure 16. Shutdown current vs. temperature
AM14048V1
VIN=2V, VEN= GND, VOUT=VADJ
0
0.5
1
1.5
2
2.5
-60 -40 -20 0 20 40 60 80 100 120 140
Quiescent current [µA]
Temperature [°C]
Figure 17. Quiescent current vs. load current
AM14049V1
VIN=2V, VOUT=VADJ , T=25°C
0
50
100
150
200
250
300
0 200 400 600 800 1000 1200
Quiescent current [µA]
Load current [mA]
LDL112
Typical performance characteristics
DS10321 - Rev 3 page 10/32
Figure 18. Dropout voltage vs. temperature
(IOUT = 600 mA)
AM14050V1
IOUT= 0.6A, VOUT=3.3V
0
50
100
150
200
250
300
350
400
-60 -40 -20 0 20 40 60 80 100 120 140
Dropout voltage [mV]
Temperature [°C]
Figure 19. Dropout voltage vs. temperature
(IOUT = 1.2 A)
AM14051V1
IOUT= 1.2A, VOUT=3.3V
0
100
200
300
400
500
600
700
-60 -40 -20 0 20 40 60 80 100 120 140
Dropout voltage [mV]
Temperature [°C]
Figure 20. Dropout voltage vs. load current
AM14052V1
T=25°C
0
50
100
150
200
250
300
350
400
10 210 410 610 810 1010
Dropout Voltage [mV]
Load current [mA]
Figure 21. Short-circuit current vs. input voltage
AM14053V1
VOUT=3.3V, T=25°C
0
0.5
1
1.5
2
2.5
3
0 1 2 3 4 5 6
Short circuit current [A]
Input voltage [V]
Figure 22. Enable thresholds vs. temperature
AM14054V1
V
IN
=3.8V
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
-60 -40 -20 0 20 40 60 80 100 120 140
Enable voltage [V]
Temperature [°C]
Low
Hi
Figure 23. SVR vs. frequency
AM14055V1
0
10
20
30
40
50
60
70
100 1000 10000 100000 1000000
SVR [dB]
Frequency [Hz]
Vout=3.3V
Vout=Vadj
VIN=1.6V or 3.8V +/ - 200mV, IOUT=10mA, COUT =1µF
LDL112
Typical performance characteristics
DS10321 - Rev 3 page 11/32
Figure 24. Output noise spectral density
AM14057V1
VIN = 1.6V or 3.8V, CIN = COUT =1µF
0
1
2
3
4
5
6
7
8
0.01 0.1 1 10 100
Output Noise Density [mV/sqrt(Hz)]
Frequency: f [kHz]
Vout=3.3V
Vout=Vadj
Figure 25. Stability plan vs. Cout, ESR
AM14057V2
0
0.5
1
1.5
2
2.5
3
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
ESR @ 100 KHz[Ω]
COUT [µF] (nominal value)
VIN from 2 to 5.5V, IOUT from 0 to 1.2A, CIN=1µF
STABILITY AREA
Figure 26. Line transient
AM14058V1
VIN=from 3.5V to 5.5V, VEN=2V, IOUT=10mA, VOUT=3.3V, COUT=1µF, tr=tf=1µs
VOUT
VEN
Figure 27. Load transient
AM14059V1
VIN=VEN=4V, IOUT=from 5mA to 1.2A, VOUT=3.3V, tr=tf=5µs
IOUT
VOUT
Figure 28. Enable transient
AM14060V1
VIN=4V, VEN=0V to 2V, IOUT=1.2A, VOUT=3.3V, tr=tf=1µs
IOUT
VOUT
VEN
Figure 29. Turn-on time
AM14061V1
VIN=VEN= from 0V to 5.5V, IOUT=5mA, VOUT=3.3V, tr=tf=5µs
VOUT
VEN
LDL112
Typical performance characteristics
DS10321 - Rev 3 page 12/32
8Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK®
packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions
and product status are available at: www.st.com. ECOPACK® is an ST trademark.
8.1 DFN6 (3x3) package information
Figure 30. DFN6 (3x3) package outline
7946637_C
LDL112
Package mechanical data
DS10321 - Rev 3 page 13/32
Table 6. DFN6 (3x3) mechanical data
Dim.
mm
Min. Typ. Max.
A 0.80 1
A1 0 0.02 0.05
A3 0.20
b 0.23 0.45
D 2.90 3 3.10
D2 2.23 2.50
E 2.90 3 3.10
E2 1.50 1.75
e 0.95
L 0.30 0.40 0.50
Figure 31. DFN6 (3x3) recommended footprint
7946637_C
LDL112
DFN6 (3x3) package information
DS10321 - Rev 3 page 14/32
8.2 DFN6 (3x3) packing information
Figure 32. DFN6 (3x3) tape outline
7875978_ N
LDL112
DFN6 (3x3) packing information
DS10321 - Rev 3 page 15/32
Figure 33. DFN6 (3x3) reel outline
7875978_N
Table 7. DFN6 (3x3) tape and reel mechanical data
Dim.
mm
Min. Typ. Max.
A0 3.20 3.30 3.40
B0 3.20 3.30 3.40
K0 1 1.10 1.20
LDL112
DFN6 (3x3) packing information
DS10321 - Rev 3 page 16/32
8.3 DFN6 (2x2) package information
Figure 34. DFN6 (2x2) package outline
7733060
LDL112
DFN6 (2x2) package information
DS10321 - Rev 3 page 17/32
Table 8. DFN6 (2x2) mechanical data
Dim.
mm
Min. Typ. Max.
A 0.70 0.75 0.80
A1 0.00 0.02 0.05
A3 - 0.203 ref -
b 0.25 0.30 0.35
D - 2.00 -
E - 2.00 -
e - 0.50 -
D2 0.77 0.92 1.02
E2 1.30 1.45 1.55
K 0.15 - -
L 0.20 0.30 0.40
aaa - 0.05 -
bbb - 0.10 -
ccc - 0.10 -
ddd - 0.05 -
eee - 0.08 -
Figure 35. DFN6 (2x2) recommended footprint
7733060 revE
LDL112
DFN6 (2x2) package information
DS10321 - Rev 3 page 18/32
8.4 DFN6 (2x2) packing information
Figure 36. DFN6 (2 x 2 mm) reel outline
Table 9. DFN6 (2 x 2 mm) tape and reel mechanical data
Dim.
mm
Min. Typ. Max.
A 180
C 12.8 13.2
D 20.2
N 60
T 14.4
A0 2.4
B0 2.4
K0 1.3
P0 4
P 4
LDL112
DFN6 (2x2) packing information
DS10321 - Rev 3 page 19/32
8.5 SO8 package information
Figure 37. SO-8 batwing package outline
0016023_G
Table 10. SO-8 batwing mechanical data
Dim.
mm
Min. Typ. Max.
A 1.75
A1 0.10 0.25
A2 1.25
b 0.31 0.51
b1 0.28 0.48
c 0.10 0.25
c1 0.10 0.23
D 4.80 4.90 5.00
E 5.80 6.00 6.20
E1 3.80 3.90 4.00
e 1.27
h 0.25 0.50
L 0.40 1.27
L1 1.04
L2 0.25
k 0° 8°
ccc 0.10
LDL112
SO8 package information
DS10321 - Rev 3 page 20/32
Figure 38. SO-8 batwing recommended footprint
0016023_GU
LDL112
SO8 package information
DS10321 - Rev 3 page 21/32
8.6 SO8-batwing packing information
Figure 39. SO8-batwing tape and reel outline
Table 11. SO8-batwing mechanical data
Dim.
mm
Min. Typ. Max.
A 330
C 12.8 13.2
D 20.2
N 60
T 22.4
A0 8.1 8.5
B0 5.5 5.9
K0 2.1 2.3
P0 3.9 4.1
P 7.9 8.1
LDL112
SO8-batwing packing information
DS10321 - Rev 3 page 22/32
8.7 PPAK package information
Figure 40. PPAK package outline
0078180_F
LDL112
PPAK package information
DS10321 - Rev 3 page 23/32
Table 12. PPAK mechanical data
Dim.
mm
Min. Typ. Max.
A 2.2 2.4
A1 0.9 1.1
A2 0.03 0.23
B 0.4 0.6
B2 5.2 5.4
C 0.45 0.6
C2 0.48 0.6
D 6 6.2
D1 5.1
E 6.4 6.6
E1 4.7
e 1.27
G 4.9 5.25
G1 2.38 2.7
H 9.35 10.1
L2 0.8 1
L4 0.6 1
L5 1
L6 2.8
R 0.20
V2 0° 8°
LDL112
PPAK package information
DS10321 - Rev 3 page 24/32
8.8 PPAK packing information
Figure 41. PPAK tape outline
P1
A0 D1
P0
F
W
E
D
B0
K0
T
User direction of feed
P2
10 pitches cumul ative
toleran ce on tape +/- 0.2 mm
User direction of feed
R
Bending radius
B1
For machine ref. only
including d raft and
radii concentric around B0
AM08852v1
Top cover
tape
LDL112
PPAK packing information
DS10321 - Rev 3 page 25/32
Figure 42. PPAK reel outline
Table 13. PPAK mechanical data
Tape Reel
Dim.
mm
Dim.
mm
Min. Max. Min. Max.
A0 6.8 7 A 330
B0 10.4 10.6 B 1.5
B1 12.1 C 12.8 13.2
D 1.5 1.6 D 20.2
D1 1.5 G 16.4 18.4
E 1.65 1.85 N 50
F 7.4 7.6 T 22.4
K0 2.55 2.75
P0 3.9 4.1 Base qty. 2500
P1 7.9 8.1 Base qty. 2500
P2 1.9 2.1
R 40
T 0.25 0.35
W 15.7 16.3
LDL112
PPAK packing information
DS10321 - Rev 3 page 26/32
9Ordering information
Table 14. Order codes
DFN6 (3x3) DFN6 (2x2) SO8-batwing PPAK Output voltage (V)
LDL112PV10R LDL112PU10R LDL112D10R 1.0
LDL112PV12R LDL112PU12R LDL112D12R 1.2
LDL112PV15R 1.5
LDL112PV18R LDL112PU18R LDL112D18R 1.8
LDL112PU30R 3.0
LDL112PV33R LDL112PU33R LDL112D33R 3.3
LDL112PVR LDL112PUR LDL112DR LDL112PT-TR Adj
LDL112
Ordering information
DS10321 - Rev 3 page 27/32
Revision history
Table 15. Document revision history
Date Revision Changes
21-Nov-2014 1 Initial release.
28-Oct-2016 2
Updated Figure 32. DFN6 (2x2) package outline. Modified Table 9. Order
codes.
Minor text changes.
20-Feb-2019 3 Updated Table 14. Order codes.
LDL112
DS10321 - Rev 3 page 28/32
Contents
1Diagram ...........................................................................2
2Pin configuration ..................................................................3
3Typical application.................................................................4
4Maximum ratings ..................................................................5
5Electrical characteristics...........................................................6
6Application information............................................................8
6.1 Thermal and short-circuit protections ..............................................8
6.2 Output voltage setting for ADJ version .............................................8
6.3 Reverse current protection.......................................................8
7Typical performance characteristics ...............................................9
8Package information..............................................................13
8.1 DFN6 (3x3) package information ................................................13
8.2 DFN6 (3x3) packing information .................................................14
8.3 DFN6 (2x2) package information ................................................16
8.4 DFN6 (2x2) packing information .................................................18
8.5 SO8-batwing package information ...............................................19
8.6 SO8-batwing packing information ................................................21
8.7 PPAK package information .....................................................22
8.8 PPAK packing information ......................................................24
9Ordering information .............................................................27
Revision history .......................................................................28
Contents ..............................................................................29
List of tables ..........................................................................30
List of figures..........................................................................31
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Contents
DS10321 - Rev 3 page 29/32
List of tables
Table 1. Pin description......................................................................3
Table 2. Absolute maximum ratings .............................................................5
Table 3. Thermal data.......................................................................5
Table 4. LDL112 electrical characteristics (fixed version) ...............................................6
Table 5. LDL112 electrical characteristics (adjustable version) ...........................................7
Table 6. DFN6 (3x3) mechanical data ........................................................... 14
Table 7. DFN6 (3x3) tape and reel mechanical data ................................................. 16
Table 8. DFN6 (2x2) mechanical data ........................................................... 18
Table 9. DFN6 (2 x 2 mm) tape and reel mechanical data ............................................. 19
Table 10. SO-8 batwing mechanical data ......................................................... 20
Table 11. SO8-batwing mechanical data .......................................................... 22
Table 12. PPAK mechanical data ............................................................... 24
Table 13. PPAK mechanical data ............................................................... 26
Table 14. Order codes ...................................................................... 27
Table 15. Document revision history ............................................................. 28
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List of tables
DS10321 - Rev 3 page 30/32
List of figures
Figure 2. Block diagram ....................................................................2
Figure 3. Pin connection DFN6 (3x3) and DFN6 (2x2) (top view) ........................................3
Figure 4. Pin connection PPAK and SO8 (top view) .................................................3
Figure 5. Typical application circuits ............................................................4
Figure 8. Output voltage vs. temperature (VOUT = 3.3 V, IOUT = 5 mA).....................................9
Figure 9. Output voltage vs. temperature (VOUT = 3.3 V, IOUT = 1.2 A).....................................9
Figure 10. Output voltage vs. temperature (VOUT = VADJ, IOUT = 5 mA).....................................9
Figure 11. Output voltage vs. temperature (VOUT = VADJ, IOUT = 1.2 A).....................................9
Figure 12. Line regulation vs. temperature........................................................ 10
Figure 13. Load regulation vs. temperature ....................................................... 10
Figure 14. Quiescent current vs. temperature (IOUT = 0 mA) ........................................... 10
Figure 15. Quiescent current vs. temperature (IOUT = 1.2 A) ........................................... 10
Figure 16. Shutdown current vs. temperature...................................................... 10
Figure 17. Quiescent current vs. load current...................................................... 10
Figure 18. Dropout voltage vs. temperature (IOUT = 600 mA) ........................................... 11
Figure 19. Dropout voltage vs. temperature (IOUT = 1.2 A)............................................. 11
Figure 20. Dropout voltage vs. load current ....................................................... 11
Figure 21. Short-circuit current vs. input voltage .................................................... 11
Figure 22. Enable thresholds vs. temperature ..................................................... 11
Figure 23. SVR vs. frequency ................................................................ 11
Figure 24. Output noise spectral density ......................................................... 12
Figure 25. Stability plan vs. Cout, ESR........................................................... 12
Figure 26. Line transient .................................................................... 12
Figure 27. Load transient ................................................................... 12
Figure 28. Enable transient .................................................................. 12
Figure 29. Turn-on time..................................................................... 12
Figure 30. DFN6 (3x3) package outline .......................................................... 13
Figure 31. DFN6 (3x3) recommended footprint..................................................... 14
Figure 32. DFN6 (3x3) tape outline............................................................. 15
Figure 33. DFN6 (3x3) reel outline ............................................................. 16
Figure 34. DFN6 (2x2) package outline .......................................................... 17
Figure 35. DFN6 (2x2) recommended footprint..................................................... 18
Figure 36. DFN6 (2 x 2 mm) reel outline ......................................................... 19
Figure 37. SO-8 batwing package outline ........................................................ 20
Figure 38. SO-8 batwing recommended footprint ................................................... 21
Figure 39. SO8-batwing tape and reel outline ..................................................... 22
Figure 40. PPAK package outline .............................................................. 23
Figure 41. PPAK tape outline ................................................................. 25
Figure 42. PPAK reel outline ................................................................. 26
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List of figures
DS10321 - Rev 3 page 31/32
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DS10321 - Rev 3 page 32/32