bd8372hfp-m ROHM Co. Ltd., bd8372hfp-m Datasheet - Page 11

• Manufacturer Part Number: bd8372hfp-m
• Description: Led Drivers For Automotive Light
• Manufacturer: ROHM Co. Ltd.

●Current control at output saturation
BD8372HFP-M,BD8372EFJ-M
© 2011 ROHM Co., Ltd. All rights reserved.
www.rohm.com
When VIOUT(=VF) exceeds VIN-0.4V, the current is decreased for a set current. Therefore, because VF decreases due to IF
decrease of LED, Threshold VOUT=VIN-0.2V of open detection can be prevented keeping the relation of VIOUT≦VIN-0.4V,
and being exceeded. The current control must become IOUT<20µA and IF must select LED for VF not to exceed
VUVLO_OPEN by 20µA.
LED_OPEN
ISET
Current limit
11/16
+
+
-
-
Current
control
VIN-0.2V
VIN-0.5V
VIN
IOUT
Technical Note
2011.04 - Rev.A