BD3004HFP_06 Datasheet, PDF (1/9 Pages) Rohm – Regulators with Voltage Detector and Watchdog Timer

TECHNICAL NOTE
Power Management LSI Series for Automotive Body Control
Regulators with
Voltage Detector and
Watchdog Timer
BD3004HFP,BD3005HFP
zDescription
The BD3004HFP,BD3005HFP low bias current regulator and watchdog timer features a high 50 V breakdown voltage and is compatible
with on-board vehicle microcontrollers. It offers an output current of 500 mA while limiting bias current to 80 µA (Typ.). The series supports
the use of ceramic capacitors as output phase compensation capacitors.The reset detection voltage can be changed by connecting a
resistor to the Vs pin.（BD3004HFP）The watchdog timer can be switched on and off using the INH pin input logic.（BD3005HFP）
zFeatures
1) 5 V/500 mA regulators for microcontrollers
BD3004HFP: Adjustable detection voltage (Vs pin)
BD3005HFP:Built-in watchdog timer reset circuit (INH pin: watchdog timer on/off)
2) Super-low bias current: 80 µA (Typ.)
3) Low-saturation voltage type P-channel DMOS output transistors
4) High precision output voltage: 5 V ±2%
5) Low-ESR ceramic capacitors can be used as output capacitors
6) Vcc Maximum applied voltage: 50 V
7) Built-in overcurrent protection circuit and thermal shutdown circuit
8) Built-in reverse connection breakdown prevention circuit
9) Back current flow protection during sudden battery failures, making it a highly reliable 5 V regulator.
10) HRP7 package
zApplications
Onboard devices (Vehicle equipment, Car stereos, Satellite navigation systems, etc.)
zAbsolute maximum ratings (Ta = 25°C)
Parameter
Vcc applied voltage
Symbol
Limit
Unit
Vcc
−15 to +50^*1
V
Vs pin voltage(BD3004HFP)
Vs
−0.3 to +15
V
INH pin voltage(BD3005HFP)
VINH
−0.3 to +15
V
Regulator output pin voltage
VOUT
−0.3 to +15
V
Reset output pin voltage
VRO
−0.3 to +15
V
Watchdog input pin voltage
VCLK
−0.3 to +15
V
Reset delay setting pin voltage
VCT
−0.3 to +15
V
Output current
Power dissipation
IOUT
500
mA
Pd
1.6^*2
W
Operating temperature range
Topr
−40 to +125
°C
Storage temperature range
Tstg
−55 to +150
°C
Maximum junction temperature
Tjmax
150
°C
*1 Must not exceed Pd.
*2 Reduced by 12.8 mW/°C over 25°C, when mounted on a glass epoxy board (70 mm × 70 mm × 1.6 mm).
Ver.B July 2006