STPIC44L02PTR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STPIC44L02PTR

4 CHANNEL SERIAL AND PARALLEL LOW SIDE PRE-FET DRIVER

STMicroelectronics 

STPIC44L02

Figure 15 : Normal Operation

Figure 16 : Shorted Load Condition (Deglitch Time)

OPEN LOAD

The STPiC44L02 monitors the drain of each

power FET for open circuit conditions that may

exist. The 60µA current source is provided to

monitor open load fault conditions. Open-load

faults are only detected when the power FET is

turned off. When load impedance is open or

substantially high, the 60µA current source has

adequate drive to pull the drain of T1 below the

fault reference threshold on the detection circuit.

Unused DRAIN0-DRAIN3 inputs must be

connected to VBAT through a pull-up resistor to

prevent false reporting of open-load fault

conditions. The on-board deglitch timer starts

running when the STPiC44L02, gate output to the

power FET transitates to the off state. The timer

provides a 60ms deglitch time, T(STBFM), to allow

the drain voltage to stabilize after the powerFET

has been turned off. The deglitch time is only

enabled for the first 60ms after the FET has been

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