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BD86852MUF-C Datasheet(PDF) 35 Page - Rohm

Part # BD86852MUF-C
Description  PMIC for Automotive Camera
Download  46 Pages
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BD86852MUF-C Datasheet(HTML) 35 Page - Rohm

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TSZ02201-0A3A0AP00520-1-2
© 2020 ROHM Co., Ltd. All rights reserved.
03.Mar.2020 Rev.001
www.rohm.com
TSZ22111 • 15 • 001
BD86852MUF-C
3.8
Application Circuit Example (Using the EN Resistance) - continued
It is necessary that each output voltage is OFF before VUVLOVCC turns ON to make outputs sequentially OFF.
Discharge time after each output turns OFF to LVD starts can be calculated by the following expressions.
��������
= − ������������ × ���������������������������� // ������������������������ × ln(
��������������������
������������
)
VOi
COi
RLOADi
RVOiDIS
Li
SWi
Figure 31. Discharge Resister
Where:
RVOiDIS: Discharge resistor (DCDC2, DCDC3)
VLVDi: LVD Operating Voltage
RLOADi: Load resistor
Co: Output capacitor
Vo: Output Voltage
DCR of Li is not considered
VCC
Internal SS3 (DC/DC3)
VO3 (DC/DC3)
Internal SS2 (DC/DC2)
VO2 (DC/DC2)
VO4 (EXT_LDO) = FB_LDO
PGOOD
VTH_EN1
VUVLOVREG_OFF
t2:VO2 Discharge Time
VLVD12
VLVD32
VLVD42
VLVD41
VLVD21
VLVD31
VTH_EN2
EN
VREG
Internal SS1 (DC/DC1)
VLVD22
SS3 finish
4576 clk
SS2 finish
4576 clk
VO1 (DC/DC1) = VS2, VS3, VS4
200
μs (Typ)
SS1 finish
4576 clk
EN_LDO
tPGOOD = 10 ms
VUVLOVS_OFF
VUVLOVCC_ON
t3:VO3 Discharge Time
VO4 Discharge Time
Figure 32. Output Timing Chart (Using the EN Resistance)


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