STPIC44L02 datasheet(15/21 Pages) STMICROELECTRONICS

部件名	STPIC44L02

功能描述	4 CHANNEL SERIAL AND PARALLEL LOW SIDE PRE-FET DRIVER

PDF	21 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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STPIC44L02

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turned off. After the deglitch delay time, the drain

is checked to verify that it is greater than the fault

reference voltage. When it is less than the

reference voltage, a fault is flagged to the

microcontroller through FLAT that an open-load

fault condition exists. The microcontroller can then

read the serial port on the STPiC44L02 to isolate

the channel that reported the fault condition. Fault

bits 0-3 distinguish faults for each of the output

channels. Figures 18 and 19

illustrate the

operation of the open-load detection circuit. This

feature

provides

useful

information

the

microcontroller to isolate system failures and warn

the operator that a problem exists. Examples of

such applications would be a warning that a light

bulb filament may be open, solenoid coils may be

open, etc.

Figure 17 : Open Load Short Circuit test Circuitry

Figure 18 : Normal Condition Driving Load

STPIC44L02 数据表(PDF) 15 Page - STMicroelectronics