Datasheet

Technical Note
3/8
BU48□□G Series, BU48□□F Series, BU48□□FVE Series,
BU49□□G Series, BU49□□F Series, BU49□□FVE Series
www.rohm.com
2011.03 - Rev.D
© 2011 ROHM Co., Ltd. All rights reserved.
●Electrical characteristics (Unless Otherwise Specified Ta=-25 to 125℃)
Parameter Symbol Condition
Limit
Unit
Min. Typ. Max.
Circuit Current when ON
IDD1 VDD=VDET-0.2V
V
DET
=0.9-1.3V
- 0.15 0.88
µA
V
DET
=1.4-2.1V
- 0.20 1.05
V
DET
=2.2-2.7V
- 0.25 1.23
V
DET
=2.8-3.3V
- 0.30 1.40
V
DET
=3.4-4.2V
- 0.35 1.58
V
DET
=4.3-4.8V
- 0.40 1.75
Circuit Current when OFF
IDD2 VDD=VDET+2.0V
V
DET
=0.9-1.3V
- 0.30 1.40
µA
V
DET
=1.4-2.1V
- 0.35 1.58
V
DET
=2.2-2.7V
- 0.40 1.75
V
DET
=2.8-3.3V
- 0.45 1.93
V
DET
=3.4-4.2V
- 0.50 2.10
V
DET
=4.3-4.8V
- 0.55 2.28
Operating Voltage Range
V
OPL
V
OL≤0.4V, Ta=25~125℃, RL=470kΩ
0.70 - -
V
VOL≤0.4V, Ta=-40~25℃, RL=470kΩ
0.90 - -
‘Low’ Output Current (Nch)
IOL
V
DS=0.05V VDD=0.85V
20 100 - µA
VDS=0.5V VDD=1.5V VDET=1.7-4.8V
1.0 3.3 -
mA
VDS=0.5V VDD=2.4V VDET=2.7-4.8V
3.6 6.5 -
‘High’ Output Current (Pch)
(only BU49□□G/F/FVE)
IOH
VDS=0.5V VDD=4.8V VDET=0.9-3.9V
1.7 3.4 -
mA
VDS=0.5V VDD=6.0V VDET=4.0-4.8V
2.0 4.0 -
Output Leak Current when
OFF
(only BU48□□G/F/FVE)
Ileak
V
DD=VDS=7V
Ta= - 40℃~85℃
- 0 0.1
µA
VDD=VDS=7V
Ta= 8 5℃~125℃
- 0 1
* This product is not designed for protection against radioactive rays.
●Block Diagrams
BU48□□G/F/FVE BU49□□G/F/FVE
Fig.1 Fig.2
SSOP5
SOP4
VSOF5
PIN No. Symbol Function PIN No. Symbol Function PIN No. Symbol Function
1 VOUT Reset output 1 VOUT Reset output 1 VOUT Reset output
2 VDD Power supply voltage 2 VDD Power supply voltage 2 SUB Substrate*
3 GND GND 3 N.C. Unconnected terminal 3 N.C. Unconnected terminal
4 N.C. Unconnected terminal 4 GND GND 4 VDD Power supply voltage
5 N.C. Unconnected terminal 5 GND GND
*Connect the substrate to VDD
Vref
V
OUT
V
DD
GND
Vref
V
OUT
V
DD
GND
TOP VIEW
TOP VIEW
TOP VIEW