Rainbow Electronics BU4309G_FVE_F User Manual
Bu42xxfve/f/g series bu43xxfve/f/g series, Cmos voltage detector ic with delay time circuit, Application circuit
BU42XXFVE/F/G series
BU43XXFVE/F/G series
Low voltage·High-accuracy detection
CMOS VOLTAGE DETECTOR IC
with delay time circuit
1pin : V
OUT
2pin : SUB
3pin : C
T
4pin : V
DD
5pin : GND
1pin : GND
2pin : V
DD
3pin : C
T
4pin : V
OUT
BU42XXFVE
BU43XXFVE
1pin : V
OUT
2pin : V
DD
3pin : GND
4pin : N.C.
5pin : C
T
BU42XXG
BU43XXG
BU42XXF
BU43XXF
(BU42XXFVE/F/G)
BU43XXFVE/F/G
BU42XXFVE
BU43XXFVE
BU42XXG
BU43XXG
5
3
SOP4
Package
VSOF5
SSOP5
4
2
3
5
1
1
-
4
2
BU42XXF
BU43XXF
1
2
3
4
-
-
-
GND
V
DD
C
T
V
OUT
N.C.
SUB
1 2
4
5
3
1
3
4
2
1 2
4
5
3
Application Circuit
Vout
V
DD
Reset
V
DD
V
DD
GND
CT
Vref
Vout
Reset
V
DD
V
DD
GND
CT
Vref
Pin
name
Pin number
Pin explanation
GND
Supply voltage
Capacitor connect pin for output delay time setting
Reset output
Non connection pin
Sub straight (Connect to VDD)
SOP4
VSOF5
3
2
1
4
5
0.
6M
ax
.
0.5
1.2
±0
.05
1.
6±
0.
05
1.0±0.05
1.6±0.05
0.
2M
ax
.
M
0.08
0.22±0.05
0.13±0.05
3
4
2
1
0.
27
±0
.1
5
2.
1±
0.
2
1.
05
M
AX
2.0±0.2
1.3
0.1
0.13
±
0.42
±
0.05
1.25
±
0.0
5±
0.0
5
0.9 ±0.0
5
0.32
±
s
0
.2
0
.1
0.05
0.03
0.04
0.05
4˚+5˚
-4˚
0.05
0.04
s
SSOP5
0.
2M
in
.
1.
25
M
AX
2.9±0.2
2.
8±
0.
2
1.
1±
0.
05
0.
05
±0
.0
5
5
1
0.95
2 3
4
0
.2
1.6
±
0
.1
0.13
±
0.05
0.03
0.42
±
0.04
0.05
4˚+6˚
-4˚
0.1
s
ROHM's BU42XXFVE/F/G and BU43XXFVE/F/G series are low
voltage and high-accuracy detection type of VOLTAGE DETECTOR
ICs with built-in delay time circuit adopting CMOS process.
Low voltage of 0.9V detection can be realized. Adoption of high-
resistance process enable to reduce current consumption and to
set delay time by small capacitor.
Description
Features
Application
Portable appliances with microcontroller and logic circuit
1) Detection voltage: 0.1V step line-up 0.9~4.8V
(Typ.)
2) High-accuracy detection voltage: ±1.0%
(Max.)
3) Low current consumption: 0.55µA typ.
(Typ.) (V
DET
=4.8V, V
DD
=6.8V)
4) Excellent detection voltage temperature characteristic: ±30ppm/˚C
5) Delay time can be set by capacitor.
(100msec: CT=0.015µF)
6) Open drain output
(BU42XXseries)
, CMOS output
(BU43XXseries)
7) Various package lineup
VSOF5 :
(BU42XXFVE, BU43XXFVE)
SOP4 :
(BU42XXF, BU43XXF)
SSOP5 :
(BU42XXG, BU43XXG)