Datasheet
Voltage Detector IC Series
Low Voltage Free Delay Time Setting
CMOS Voltage Detector IC Series
BU42xx series
BU43xx series
●Key
Specifications
Detection voltage:
0.9V to 4.8V (Typ.)
0.1V steps
High accuracy detection voltage:
±1.0%
Ultra-low current consumption:
0.55µA (Typ.)
Operating temperature range:
-40° to +125°
C
C
●Package
SSOP5:
2.90mm x 2.80mm x 1.25mm
SOP4:
VSOF5:
2.00mm x 2.10mm x 0.95mm
1.60mm x 1.60mm x 0.60mm
●General
Description
ROHM’s BU42xx and BU43xx series are CMOS Voltage
Detector ICs with adjustable output delay. It is a
high-accuracy, low current consumption Voltage Detector
IC series with a built-in delay circuit. The lineup was
established with two output types (Nch open drain and
CMOS output) and detection voltages range from 0.9V to
4.8V in increments of 0.1V, so that the series may be
selected according to application.
●Features
Delay Time Controlled by external Capacitor
Two output types (Nch open drain and CMOS output)
Ultra-low current consumption
Wide operating temperature range
Very small and low height package
Package SSOP5 and SOP4 is similar to SOT-23-5
and SC-82 respectively (JEDEC)
●Typical
Application Circuit
V
DD1
V
DD2
●Applications
Circuits using microcontrollers or logic circuits that require
a reset.
V
DD1
R
L
BU42xx
C
IN
C
T
R
ST
Micro
controller
BU43xx
C
IN
C
T
R
ST
Micro
controller
C
L
(Capacitor for
noise filtering)
C
L
(Capacitor for
noise filtering)
GND
GND
Open Drain Output type
BU42xx series
●Connection
Diagram & Pin Descriptions
SSOP5
SOP4
N.C.
C
T
TOP VIEW
TOP VIEW
CMOS Output type
BU43xx series
V
OUT
4
C
T
3
VSOF5
TOP VIEW
GND V
DD
4
5
Marking
Lot. No
Marking
1
GND
PIN
Symbol
No.
1
2
3
4
GND
V
DD
C
T
V
OUT
2
V
DD
Lot. No
Marking
1 2 3
V
OUT
SUB C
T
Lot. No
V
OUT
PIN
Symbol
No.
1
2
3
4
5
V
OUT
V
DD
GND
N.C.
C
T
V
DD
GND
Function
Function
GND
Power supply voltage
Capacitor connection
terminal for output
delay time
Reset output
PIN
Symbol
No.
1
2
3
4
5
V
OUT
SUB
C
T
V
DD
GND
Function
Reset output
Substrate*
Capacitor connection
terminal for output
delay time
Power supply voltage
GND
Reset output
Power supply voltage
GND
Unconnected terminal
Capacitor connection
terminal for output
delay time
*Connect the substrate to V
DD
○Product
structure：Silicon monolithic integrated circuit
○This
product is not designed for protection against radioactive rays
.
www.rohm.com
TSZ02201-0R7R0G300050-1-2
© 2014 ROHM Co., Ltd. All rights reserved.
1/13
03.Feb.2014 Rev.008
TSZ22111・14・001
BU42xx series
BU43xx series
Datasheet
●Ordering
Information
B
Part
Number
U
x
x
x
x
x
Package
G : SSOP5
F : SOP4
FVE : VSOF5
-
T
R
Output Type
42 : Open Drain
43 : CMOS
Reset Voltage Value
09 : 0.9V
0.1V step
48 : 4.8V
Packaging and
forming specification
TR : Embossed tape
and reel
SSOP5
2.9±0.2
5
4
+
6
°
4
° −4°
<Tape and Reel information>
Tape
Quantity
Direction
of feed
Embossed carrier tape
3000pcs
TR
The direction is the 1pin of product is at the upper right when you hold
+0.2
1.6
−0.1
2.8±0.2
1
2
3
0.2Min.
(
reel on the left hand and you pull out the tape on the right hand
1pin
)
+0.05
0.13
−0.03
1.25Max.
1.1±0.05
0.05±0.05
+0.05
0.42
−0.04
0.95
0.1
Direction of feed
(Unit : mm)
Reel
∗
Order quantity needs to be multiple of the minimum quantity.
SOP4
+0.2
1.25 –0.1
2.0±0.2
1.3
4
3
VSOF5
0.2MAX
+6
°
4
°
–4
°
1.6±0.05
1.0±0.05
5
4
0.27±0.15
0.9±0.05
1
2
0.05
+0.05
0.13 –0.03
S
1.05Max.
(MAX 1.28 include BURR)
2.1±0.2
1.6
±
0.05
1.2
±
0.05
1
2
3
0.13±0.05
0.6MAX
0.05±0.05
+0.05
0.42 –0.04
0.1
+0.05
0.32 –0.04
S
0.5
0.22±0.05
(Unit : mm)
(Unit : mm)
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© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
2/13
TSZ02201-0R7R0G300050-1-2
03.Feb.2014 Rev.008
BU42xx series
●Lineup
BU43xx series
Datasheet
Output Type
Detection Voltage Marking
4.8V
4.7V
4.6V
4.5V
4.4V
4.3V
4.2V
4.1V
4.0V
3.9V
3.8V
3.7V
3.6V
3.5V
3.4V
3.3V
3.2V
3.1V
3.0V
2.9V
2.8V
2.7V
2.6V
2.5V
2.4V
2.3V
2.2V
2.1V
2.0V
1.9V
1.8V
1.7V
1.6V
1.5V
1.4V
1.3V
1.2V
1.1V
1.0V
0.9V
ZR
ZQ
ZP
ZN
ZM
ZL
ZK
ZJ
ZH
ZG
ZF
ZE
ZD
ZC
ZB
ZA
YZ
YY
YX
YW
YV
YU
YT
YS
YR
YQ
YP
YN
YM
YL
YK
YJ
YH
YG
YF
YE
YD
YC
YB
YA
Open Drain
Part Number
BU4248
BU4247
BU4246
BU4245
BU4244
BU4243
BU4242
BU4241
BU4240
BU4239
BU4238
BU4237
BU4236
BU4235
BU4234
BU4233
BU4232
BU4231
BU4230
BU4229
BU4228
BU4227
BU4226
BU4225
BU4224
BU4223
BU4222
BU4221
BU4220
BU4219
BU4218
BU4217
BU4216
BU4215
BU4214
BU4213
BU4212
BU4211
BU4210
BU4209
Marking
1H
1G
1F
1E
1D
1C
1B
1A
0Z
0Y
0X
0W
0V
0U
0T
0S
0R
0Q
0P
0N
0M
0L
0K
0J
0H
0G
0F
0E
0D
0C
0B
0A
ZZ
ZY
ZX
ZW
ZV
ZU
ZT
ZS
CMOS
Part Number
BU4348
BU4347
BU4346
BU4345
BU4344
BU4343
BU4342
BU4341
BU4340
BU4339
BU4338
BU4337
BU4336
BU4335
BU4334
BU4333
BU4332
BU4331
BU4330
BU4329
BU4328
BU4327
BU4326
BU4325
BU4324
BU4323
BU4322
BU4321
BU4320
BU4319
BU4318
BU4317
BU4316
BU4315
BU4314
BU4313
BU4312
BU4311
BU4310
BU4309
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© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
3/13
TSZ02201-0R7R0G300050-1-2
03.Feb.2014 Rev.008
BU42xx series
BU43xx series
Datasheet
●Absolute
Maximum Ratings
Parameter
Power Supply Voltage
Nch Open Drain Output
Output Voltage
CMOS Output
Output Current
*1*4
SSOP5(SOT-23-5)
Power
*2*4
SOP4(SC-82)
Dissipation
*3*4
VSOF5
Operation Temperature Range
Ambient Storage Temperature
Symbol
V
DD
V
OUT
Io
Pd
T
opt
Tstg
Limit
-0.3 to +7
GND-0.3 to +7
GND-0.3 to V
DD
+0.3
70
540
400
210
-40 to +125
-55 to +125
Unit
V
V
mA
mW
°
C
°
C
*1 Reduced by 5.4mW/° when used over 25°C.
C
*2 Reduced by 4.0mW/° when used over 25°C.
C
*3 Reduced by 2.1mW/° when used over 25°C.
C
*4 When mounted on ROHM standard circuit board (70mm×70mm×1.6mm, glass epoxy board).
●Electrical
Characteristics (Unless Otherwise Specified Ta=-25 to 125°
C)
Parameter
Symbol
Condition
V
DD
=H L, Ta=25° R
L
=470k
C,
Ta=+25°
C
Ta=-40° to 85°
C
C
Ta=85° to 125°
C
C
Ta=+25°
C
Ta=-40° to 85°
C
C
Ta=85° to 125°
C
C
Ta=+25°
C
Ta=-40° to 85°
C
C
Ta=85° to 125°
C
C
Ta=+25°
C
Ta=-40° to 85°
C
C
Ta=85° to 125°
C
C
Min.
V
DET
(T)
×0.99
1.782
1.741
1.718
2.475
2.418
2.386
2.970
2.901
2.864
3.267
3.191
3.150
4.158
4.061
4.009
-
-
-
-
-
-
-
-
-
-
-
-
0.70
0.90
VDD-0.5
VDD-0.5
-
-
-
Limit
Typ.
V
DET
(T)
1.8
-
-
2.5
-
-
3.0
-
-
3.3
-
-
4.2
-
-
0.15
0.20
0.25
0.30
0.35
0.40
0.30
0.35
0.40
0.45
0.50
0.55
-
-
-
-
-
-
-
Max.
V
DET
(T)
×1.01
1.818
1.860
1.883
2.525
2.584
2.615
3.030
3.100
3.139
3.333
3.410
3.452
4.242
4.341
4.394
0.88
1.05
1.23
1.40
1.58
1.75
1.40
1.58
1.75
1.93
2.10
2.28
-
-
-
-
0.05
0.5
0.5
Unit
VDET=1.8V
VDET=2.5V
Detection Voltage
V
DET
VDET=3.0V
V
VDET=3.3V
Circuit Current when ON
I
DD
1
Circuit Current when OFF
I
DD
2
Operating Voltage Range
‘High’ Output Voltage (Pch)
V
OPL
V
OH
Ta=+25°
C
Ta=-40° to 85°
C
C
VDET=4.2V
Ta=85° to 125°
C
C
V
DET
=0.9 to 1.3V
V
DET
=1.4
TO
2.1V
V
DET
=2.2
TO
2.7V
V
DD
=V
DET
-0.2V
V
DET
=2.8 to 3.3V
V
DET
=3.4 to 4.2V
V
DET
=4.3 to 4.8V
V
DET
=0.9
TO
1.3V
V
DET
=1.4
TO
2.1V
V
DET
=2.2 to 2.7V
V
DD
=V
DET
+2.0V
V
DET
=2.8 to 3.3V
V
DET
=3.4 to 4.2V
V
DET
=4.3 to 4.8V
C,
V
OL
≤0.4V,
Ta=25 to 125° R
L
=470k
V
OL
≤0.4V,
Ta=-40 to 25° R
L
=470k
C,
V
DD
=4.8V, I
SOURCE
=
1.7 mA
,V
DET
=
0.9V to 3.9V
µA
µA
V
V
V
V
V
V
DD
=6.0V, I
SOURCE
=
2.0 mA
,V
DET
=
4.0V to 4.8V
V
DD
=0.85V, I
SINK
= 20
µ
A
‘Low’ Output Voltage (Nch)
V
OL
V
DD
=1.5V, I
SINK
= 1
m
A,
V
DET
=1.7 to 4.8V
V
DD
=2.4V, I
SINK
= 3.6
m
A,
V
DET
=2.7 to 4.8V
*1: Design Guarantee. (Outgoing inspection is not done on all products.)
V
DET
(T) : Standard Detection Voltage (0.9V to 4.8V, 0.1V step)
R
L
: Pull-up resistor to be connected between V
OUT
and power supply.
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
4/13
TSZ02201-0R7R0G300050-1-2
03.Feb.2014 Rev.008
BU42xx series
BU43xx series
Datasheet
●Electrical
Characteristics (Unless Otherwise Specified Ta=-25 to 125° - continued
C)
Parameter
Leak Current when OFF
Symbol
I
leak
Condition
V
DD
=V
DS
=7V Ta=-40 to 85°
C
V
DD
=V
DS
=7V Ta=85 to 125°
C
V
DD
=V
DET
×1.1, V
DET
=0.9 to 2.5V Ta=25°
C
R
L
=470k
V
DD
=V
DET
×1.1, V
DET
=2.6 to 4.8V Ta=25°
C
R
L
=470k
*1
V
DD
=V
DET
×1.1 V
CT
=0.5V Ta=25°
C
V
CT
=0.1V V
DD
=0.85V
V
CT
=0.5V V
DD
=1.5V V
DET
=1.7 to 4.8V
Limit
Min.
-
-
V
DD
×0.35
V
DD
×0.40
9
5
200
-
V
DET
≤1.0V
V
DET
≥1.1V
V
DET
×0.03
V
DET
×0.03
Typ.
0
0
V
DD
×0.45
V
DD
×0.50
10
40
400
±30
V
DET
×0.05
V
DET
×0.05
Max.
0.1
1
V
DD
×0.55
V
DD
×0.60
11
-
-
-
V
DET
×0.08
V
DET
×0.07
Unit
µA
CT pin Threshold Voltage
Output Delay Resistance
CT pin Output Current
Detection Voltage
Temperature coefficient
V
CTH
R
CT
I
CT
V
M
µA
ppm/°
C
V
DET
/∆T Ta=-40° to 125°
C
C
V
DD
=L H L
Ta=-40 to 125°
C
R
L
=470k
Hysteresis Voltage
∆V
DET
V
*1: Design Guarantee. (Outgoing inspection is not done on all products.)
V
DET
(T) : Standard Detection Voltage (0.9V to 4.8V, 0.1V step)
R
L
: Pull-up resistor to be connected between V
OUT
and power supply.
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/13
TSZ02201-0R7R0G300050-1-2
03.Feb.2014 Rev.008
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