STM802 Datasheet, PDF (1/8 Pages) STMicroelectronics – SOLENOID CONTROLLER IC

STM802
SOLENOID CONTROLLER IC
s WIDE SUPPLY VOLTAGE RANGE: 8 TO 35V
DC
s BUILD-IN GATE DRIVE VOLTAGE CLAMP
TYP. 11V
s LOGIC CONTROLLED ENABLING CIRCUIT
s DIGITAL IN-RUSH TIMER
s BUILT-IN POWER-ON RESET
s INTERNALLY TRIMMED TIMING
OSCILLATOR
s NO EXTERNALLY TIMING CAPACITORS
NEEDED
s FIXED IN-RUSH/HOLD CURRENT RATIO
s LOW DROP CURRENT SENSING
RESISTOR
s INTEGRATED FILTER IN THE FEEDBACK
LOOP (TIME COSTANT OF 2µs TYP.)
s SO-8 PACKAGE
DESCRIPTION
This circuit is basically switch mode current
regulator with 2 modes (In-rush and Holding).
In-rush current occurs in the first 64 ms of each
SO-8
on/off cycle with the rise time dependent on the
coil’s resistance and inductance. The Hold-current
is a partition of the In-rush current fixed by the
ratio between V₁ and V₂. A control pin is provided
for enabling and disabling the gate control output
for the external power MOS. The MOS transistor
must be chosen according to the supply voltage
range and the current flowing through the
solenoid.
ORDERING CODES
Type
STM802BD
STM802BDR
Temperature
Range
-40 to 85 °C
-40 to 85 °C
Package
SO-8 (Tube)
SO-8 (Tape & Reel)
Comments
100 parts per tube / 20 parts per box
2500 parts per reel
October 2003
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