L9374LF datasheet(55/80 Pages) STMICROELECTRONICS

부품명	L9374LF

상세설명	Four channel valve driver

PDF	80 Pages

Scroll/Zoom	100%

제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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55 / 80 page

DocID025414 Rev 1

55/80

L9374LF

Circuit description

Figure 36. Test failed: high resistive load / undercurrent

A failed test sequence for under current condition

The test sequence:

Disable Edge Shaping (Command address 2, bits D8 & D7 = ‘10’)

Initiate SVDT (Command address 2; bits D1 & D0 = ‘10’)

Qx switches on at the next sync-signal (sequence of actuation: Q1..Q4)

The output current increases but does not reach the undercurrent value, IUC.

After ty the output is switched off.

After the output is disabled if the output clamps the voltage to VZ (35V) a Dx_Loss is

detected.

If an Over temperature is not detected then the SDVT test is passed

The SVDT will then test at Qx+1 until all 4 outputs have been tested.

Criterion:



the current value does not reach the undercurrent value within time ty

SPI:



Status registers 1 - 4, UC_Qx bit is set.

L9374LF 데이터시트(PDF) 55 Page - STMicroelectronics