TECHNICAL NOTE
Power Management LSI Series for Automotive Body Control
High temperature operating
LDO Regulator
Now ...
TECHNICAL NOTE
Power Management LSI Series for Automotive Body Control
High temperature operating
LDO
Regulator
Now available
BD3940FP, BD3941FP/HFP/T
zDescription BD394□FP Series
regulators feature a high 36 V breakdown voltage and are compatible with onboard vehicle microcontrollers. They offer an output current of 500 mA while limiting dark current to 30 µA (TYP). The series supports the use of ceramic capacitors as output phase compensation capacitors. Since the ICs use P-channel DMOS output
transistors, increased loads do not result in increased total supply current. BD394□FP Series is ideal for lowering current consumption and costs in battery direct-coupled systems.
zFeatures 1) Super-low dark current: 30 µA (Typ.) 2) Low-saturation voltage type P-channel DMOS output
transistors Output on resistance: 1.6 Ω (Typ.) 3) High precision output voltage: 5 V ±2% (Ta = 25°C) / Iomax = 500 mA 4) Low-ESR ceramic capacitors can be used as output capacitors 5) Vcc power supply voltage = 36 V / Peak power supply voltage = 50 V (tr ≥ 1 ms, tH ≤ 200 ms) 6) Built-in over current protection circuit and thermal shutdown circuit 7) TO252-3/HRP-5/TO220FP-3 package
zApplications Vehicle equipment, car stereos, satellite navigation systems, etc.
zProduct line Model
Output voltage
BD3940FP 3.3 V
BD3941FP/HFP/T 5.0 V
zAbsolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Limit
Unit
Power supply voltage
Vcc
36*1
V
Output current
Io 500 mA
1.2*2
Power dissipation
Pd
1.6*3...