June 1999 alpha mi croelectronics gm bh Page 1/6
Description
The ú1610, combined with an external NMOS, is
used as a low loss driver for coils, relays or
magnets.
The integrated circuit includes a self protection of
broken wires and short circuits on the input line.
The chip overtemperature protection is adjusted
from 80 to 150 °C with an external resistor.
Chip overtemperature and undervoltage errors are
indicated on input IN.
Features
q Voltage supply 8 to 45 VDC
q 5-V reference voltage output
q Quiescent current 2 mA
q Output current up to 200 mA
q Undervoltage lockout and power-on reset
q Overvoltage protection for the external NMOS
q Protection against reversed battery and EMC
q Adjustable chip overtemperature protection
q Temperature range -40°C to +150°C
q Package SOP 18 ú1610AT
Die ú1610AX
Applications
q Driver for coils and relays
Typical Application Coil driver using ú1610
10
11
16
18
12
RPT
RREF
15K
30K
IN
ú
1610
IRCR
INPT GND
VDDC
COSC
9VREF
100n
CVREF
3
2
17
DL
M
VDD
output
VDD
OUT
OVP
C
OSC
10n
CVDD
C
15Input
Coil Driver IC
ú1610
Preliminary Data Sheet
Page 2/6 alpha mi croelectronics gm bh June 1999
Functional Block Diagram
Reference
Regulator
Internal
Reference
Thermal
Shutdown
Undervoltage
Lockout Prestababilization
7V for Reference Prestababilization
12V for Dri ver
Frequency
Control
Error-Logic
Turn on / off
Logic
VDD
VDD
1716
VDDC
CVDDC
15 IN
Input
ì1614
9V
Driver
K2
D
DZ1
48V
RV
DZ3
M2
16V
DZ2
VPSR VPSD
D2
Divider
1:4
Oscillator
18
121110
INPT
COSC
RPT RREF
OSCIRCR GND
30k
50µ
50µ
3V
2,5V
200k
2
3
OUT
OVP
M1
VREF
9
CREF
500K
June 1999 alpha mi croelectronics gm bh Page 3/6
Pin Definition
Pin Symbol Designation
2 OVP Overvoltage Protection Output for external MOSFET
3 OUT Output
9 VREF Reference Voltage Output
10 INPT Resistor for Overtemperature Protection
11 IRCR Resistor for Current Reference
12 OSC Capacitor for Oscillator Frequency
15 IN Input
16 VDDC Block Capacitor
17 VDD Supply Voltage
18 GND GND
The location of pins can be changed during the development.
General function and description
The ì1610 combined with an external N-channel power MOSFET serves for the low loss control of
electrical magnetic actuators like relays or magnets and similar kinds of coils. It is especially suitable in
automotive applications.
Page 4/6 alpha mi croelectronics gm bh June 1999
Absolute Maximum Ratings
at Tamb = -40°C ... +150°C
Symbol Parameter Min Max Unit
VDD Supply Voltage -300 80 V
IOVP Output Current OVP, t < 10µs 0 40 mA
IOUTp Output Current OUT, t < 200µs -200 200 mA
IOUT Output Current OUT -10 10 mA
-IVDDC Output Current VDDC 0 20 mA
IIN Input Current IN 0 20 mA
VIN Input Voltage IN -80 VDD V
IIRCR Input Current -100 0 µA
VOSC Input Voltage OSC 0 5 V
VIxxx Input Voltage INPT, IRCR 0 5 V
CVDDC Block Capacitor CVDDC depending VDD, VDD = 15V
VDD = 35V 1
0.22 µF
µF
RREF Resisto r RREF 29.4 30.6 kW
TCRREF Temperature Coefficient RREF 50 ppm
TjJunction Temperature - 175 °C
Tstg Storage Temperature Range -55 150 °C
Rthja Thermal Resistance SOP18 95 K/W
June 1999 alpha mi croelectronics gm bh Page 5/6
Electrical Characteristics
Operational Range
Symbol Parameter Min Max Unit
VDD Supply Voltage*) 8 45 V
fOSC Oscillator Frequency 50 5000 Hz
TaAmbient Temperature range -40 150 °C
For VDD > 40V an external Z-diode on Pi n OVP is necessary
DC Characteristics
at Ta = -40°C ... 150°C, VDD = 15V, RREF = 30kW; unless otherwise specified
Symbol Parameter Conditions Min Typ Max Unit
IDD Current Consumption OUT = open,
IN = turn OFF 23mA
VDD LON
VDD LOF
Undervoltage Lockout
Turn on
Turn off 7.5
7.25 V
V
VREF LON
VREF LOF
Power on Reset Turn on
Turn off 4.0
4.0 V
V
VREF Reference Voltage -IREF = 100µA 4.75 5.0 5.25 V
IINPT Input Current INPT VIN = 800mV -50 µA
Ta OFF Thermal turn OFF RTH = 15kW140 °C
Ta ON Thermal turn ON RTH = 15kW132 °C
AC Characteristics
at Ta = 25°C, VDD = 15V, RREF = 30kW; unless otherwise specified
Symbol Parameter Conditions Min Typ Max Unit
fOSC Oscillator Frequency COSC = 10nF 740 770 800 Hz
Page 6/6 alpha mi croelectronics gm bh June 1999
Package 18-pin Plastic SOP
11118765432
1118 17 16 15 14 13 12
11.57
0.1
7.40
0.2
0.42
0.07
10.16
1.27
2.65 max.2.4 m ax.
>0.3
10° m ax. 0.27
0.15
10.4
0.2
7.4
0.2
10
9
SOP 18
Note
It is not given warranty that the declared circ uits, devices , facilities , components, assembly groups or t reat ments included herein
are free from legal clai ms of third parties.
The declared data are onl y a description of product. They are not guaranteed properties as defined by law. The examples are gi ven
without obligation and cannot given rise t o any liability.
Reprinting t hi s data sheet - or part s of it - is only allowed with a licens e of the publis her.
alpha mi croelectronics gm bh reserves the right to m ak e changes on this specificati on without notice at any time.
alpha microelectronics gmbh
Im Technologiepark 1 Tel ++49-335-557 1750
15236 Frankfurt (Oder) Fax ++49-335-557 1759
Germany Internet http://www.alpha-microelectronics.de
email alpha@alpha-microelectronics.de
1610DSHd.doc
