L9026 datasheet(29/60 Pages) STMICROELECTRONICS

Part #	L9026

Description	Automotive configurable multi-channel relay driver 2HS 6HS/LS

PDF	60 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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Protection functions

8.1

Overload protection

The L9026 has two different over load current thresholds that preserve it in case of overload or short-circuit of the

load. This protection is present for every High side and Low side.

Figure 13. Overload thresholds

OUTn driving

signal

IL(OVL)

IL(OVL0)

IL(OVL1)

Every time the channel is switched OFF the overload current threshold is set back to IL(OVL0).

If the load current is higher than IL(OVL0) or IL(OVL1), after time tOFF(OVL) the overloaded channel is switched OFF

and the corresponding diagnosis bit DIAG_OVC_OVT.OUTn is set to “1”. The channel can be switched ON after

clearing the protection latch by setting the corresponding DIAG_OVC_OVT_RLW.OUTn bit to “1.” This bit is set

back to “0” internally after de-latching the channel. Refer to Figure 14 for details.

L9026

Protection functions

DS13397 - Rev 9

page 29/60

L9026 Datasheet(PDF) 29 Page - STMicroelectronics