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iC-JE Power-Saving PWM Relay/Solenoid Driver0 pages
iC-JE
PWM RELAY/SOLENOID DRIVER
Rev F1, Page 1/9
FEATURES
APPLICATIONS
o Wide operating voltage range of 10 to 45 Vdc
o PWM control for coil currents of 40 to 300 mA
o Coil current for energise and hold modes set by an external
resistor
o Coil current monitored during energise mode, detection of load
breakage and voltage errors
o Automatic current reduction after 100 ms to reduce the power
consumption in hold mode
o The internal free-wheeling alteration function supports PWM
operation and quick demagnetising during shutdown
o Status signalled at the current-limited LED output
o Shutdown with excessive temperature and low voltage
o Integrated oscillator needs no external components
o PWM frequency is beyond audible range
o Protective circuitry against damage by ESD
o Minimum space requirements, few external components
o PWM drive for inductive loads
(e.g. relays, electrovalves)
o Relay low-/high-side switch
PACKAGES
PDIP8
SO8
BLOCK DIAGRAM
10...45 V
TURN−ON CURRENT
ERR
LOW VOLTAGE
THERMAL SHUTDOWN
1
LED
ON
MUX
8
PWMOK
15 V
HOLD MODE
DELAY
S Q
START
2.4 Hz
VB
EN
INI
HOLD
DRIVER OUTPUT
CONTROL
t >= 100 ms
R
OFF
I
V
TURN−ON
RESET
LOUT
0.01...10 H
OUT
7
GND
6
− +
t = 25 us
HOLD
3
IN
INI
REFERENCE
x1.0
x0.66
INPUT
+
−
iC−JE
0
MUX
1
PWM
CONTROL
80 kHz
PWMOK
1.2 V
ISET
2
RSET
10...60 kΩ
GND
Copyright © 2007 iC-Haus
http://www.ichaus.com
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