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2009.11 - Rev.C
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Voltage Detector IC Series
Low Voltage Free Delay Time Setting
CMOS Voltage Detector IC Series
BU42□□G series, BU42□□F series, BU42□□FVE series,
BU43□□G series, BU43□□F series, BU43□□FVE series
●Description
ROHM CMOS reset IC series with adjustable output delay is a high-accuracy low current consumption reset 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 the application at hand.
●Features
1) Detection voltage from 0.9V to 4.8V in 0.1V increments
2) Highly accurate detection voltage: ±1.0%
3) Ultra-low current consumption
4) Nch open drain output (BU42□□G/F/FVE)and CMOS output (BU43□□G/F/FVE)
5) Small surface package SSOP5: BU42□□G，BU43□□G
SOP4: BU42□□F，BU43□□F
VSOF5: BU42□□FVE，BU43□□FVE
●Applications
All electronics devices that use microcontrollers and logic circuits.
●Selection Guide
● Lineup
Making
Detection
voltage
Part
Number
Making
Detection
voltage
Part
Number
Making
Detection
voltage
Part
Number
Making
Detection
voltage
Part
Number
ZR 4.8V BU4248 YV 2.8V BU4228 1H 4.8V BU4348 0M 2.8V BU4328
ZQ 4.7V BU4247 YU 2.7V BU4227 1G 4.7V BU4347 0L 2.7V BU4327
ZP 4.6V BU4246 YT 2.6V BU4226 1F 4.6V BU4346 0K 2.6V BU4326
ZN 4.5V BU4245 YS 2.5V BU4225 1E 4.5V BU4345 0J 2.5V BU4325
ZM 4.4V BU4244 YR 2.4V BU4224 1D 4.4V BU4344 0H 2.4V BU4324
ZL 4.3V BU4243 YQ 2.3V BU4223 1C 4.3V BU4343 0G 2.3V BU4323
ZK 4.2V BU4242 YP 2.2V BU4222 1B 4.2V BU4342 0F 2.2V BU4322
ZJ 4.1V BU4241 YN 2.1V BU4221 1A 4.1V BU4341 0E 2.1V BU4321
ZH 4.0V BU4240 YM 2.0V BU4220 0Z 4.0V BU4340 0D 2.0V BU4320
ZG 3.9V BU4239 YL 1.9V BU4219 0Y 3.9V BU4339 0C 1.9V BU4319
ZF 3.8V BU4238 YK 1.8V BU4218 0X 3.8V BU4338 0B 1.8V BU4318
ZE 3.7V BU4237 YJ 1.7V BU4217 0W 3.7V BU4337 0A 1.7V BU4317
ZD 3.6V BU4236 YH 1.6V BU4216 0V 3.6V BU4336 ZZ 1.6V BU4316
ZC 3.5V BU4235 YG 1.5V BU4215 0U 3.5V BU4335 ZY 1.5V BU4315
ZB 3.4V BU4234 YF 1.4V BU4214 0T 3.4V BU4334 ZX 1.4V BU4314
ZA 3.3V BU4233 YE 1.3V BU4213 0S 3.3V BU4333 ZW 1.3V BU4313
YZ 3.2V BU4232 YD 1.2V BU4212 0R 3.2V BU4332 ZV 1.2V BU4312
YY 3.1V BU4231 YC 1.1V BU4211 0Q 3.1V BU4331 ZU 1.1V BU4311
YX 3.0V BU4230 YB 1.0V BU4210 0P 3.0V BU4330 ZT 1.0V BU4310
YW 2.9V BU4229 YA 0.9V BU4209 0N 2.9V BU4329 ZS 0.9V BU4309
No. Specifications Description
①
Output Circuit Format
2:Open Drain Output, 3:CMOS Output
②
Detection Voltage
Example VDET: Represented as 0.1V steps in the
range from 0.9V to 4.8V
(Displayed as 0.9 in the case of 0.9V)
③
Package
G:SSOP5(SMP5C2)/ F :SOP4/ FVE:VSOF5(EMP5)
No.09006ECT02
Part Number : BU4
1
2 3
