BD3925FP-C Datasheet, PDF (1/10 Pages) Rohm – Voltage Tracker

Automotive Body Power Management LSI
Voltage Tracker
BD3925FP-C,BD3925HFP-C
No.11039EBT06
●Description
BD3925FP-C and BD3925HFP-C are voltage trackers for automotive use which feature high withstand-voltage to 50V.
They offer the output current loading to 500mA while limiting the quiescent current to 45µA (typ.), so that they suit to apply
for systems which are permanently connected to the car battery and requiring low-current-consumption. The offset is
±15mV (for 5V output. 6V < Vcc < 36V, 5mA < lo < 200mA). They integrate folded–type of over-current protection to
minimize heat dissipation while accidentally shorted, thus lead to most robust power-supply design under the harsh
automotive environment.
Features
1) Ultra-low quiescent current: 45µA (TYP.)
2) Low-saturation voltage type P-channel DMOS output transistors
3) Low offset voltage:  15mV(for 5V output, 6V< Vcc <36V, 5mA<lo<200mA)
4) Vcc power supply voltage = 50 V
5) Integrated over-current protection circuit and thermal shutdown circuit
6) TO252-5/HRP5 Package
Applications
Onboard vehicle devices (body-control, car stereos, satellite navigation systems, etc.)
Product line
Part No.
Package
BD3925FP-C
BD3925HFP-C
TO252-5
HRP5
Absolute maximum ratings (Ta=25°C)
Parameter
Symbol
Supply Voltage
Vcc
Limit
Unit
50 ^※1
V
Switch Supply Voltage
VSW
50
V
VADJ Terminal Supply Voltage
VADJ
28
V
Vo Terminal Voltage
Vout
28
V
Output Current
Io
Power Dissipation
Pd
Operating Temperature Range
Topr
500
mA
1.3 (TO252-5) ^※2
1.6 (HRP5) ^※3
W
-40 ~ +125
℃
Storage Temperature Range
Tstg
-55 ~ +150
℃
Maximum Junction Temperature Tjmax
150
℃
※1 Not to exceed Pd and ASO.
※2 TO252-5: Reduced by 10.4 mW/°C over 25 °C, when mount on a glass epoxy board : 70 mm  70 mm  1.6 mm.
※3 HRP5: Reduced by 12.8 mW/°C over 25 °C, when mount on a glass epoxy board : 70 mm  70 mm  1.6 mm).
NOTE: This product is not designed for protection against radioactive rays.
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2011.03 - Rev.B