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BU42XXFVE/F/G series

BU43XXFVE/F/G series

Low voltage·High-accuracy detection

CMOS VOLTAGE DETECTOR IC

with delay time circuit

1pin : VOUT

2pin : SUB

3pin : CT

4pin : VDD

5pin : GND

1pin : GND

2pin : VDD

3pin : CT

4pin : VOUT

BU42XXFVE

BU43XXFVE

1pin : VOUT

2pin : VDD

3pin : GND

4pin : N.C.

5pin : CT

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

BU42XXF

BU43XXF

- -

GND

VDD

VOUT

N.C.

SUB

Application Circuit

Vout

VDD

Reset

VDD

GND CT

Vref

Vout

Reset

VDD

GND CT

Vref

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

321

0.6Max.

0.5

1.2±0.05

1.6±0.05

1.0±0.05

1.6±0.05

0.2Max.

0.08

0.22±0.05

0.13±0.05

0.27±0.15

2.1±0.2

1.05MAX

2.0±0.2

1.3

0.1

0.13

0.42

0.05

1.25±

0.05±0.05

0.9

±0.05

0.32

0.2

0.1

0.05

0.03

0.04

0.05

4˚

+5˚

-4˚

0.05

0.04

SSOP5

0.2Min.

1.25MAX

2.9±0.2

2.8±0.2

1.1±0.05

0.05±0.05

0.95

2 3

0.2

1.6±

0.1

0.13

0.05

0.03

0.42

0.04

0.05

4˚

+6˚

-4˚

0.1

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.) (VDET=4.8V, VDD=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)

Summary of content (5 pages)

PAGE 1
Low voltage·High-accuracy detection BU42XXFVE BU43XXFVE CMOS VOLTAGE DETECTOR IC with delay time circuit 5 1.0±0.05 1.6±0.05 0.6Max. 1.6±0.05 1.2±0.05 BU42XXFVE/F/G series BU43XXFVE/F/G series Description 5 4 1pin : VOUT 2pin : SUB 3pin : CT 4pin : VDD 5pin : GND 0.22±0.05 0.08 M 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.
PAGE 2
Absolute Maximum Ratings (Ta=25˚C) Parameter Limits Symbol Unit V Supply voltage – 0.3 ~ + 7 VDD – GND Nch open drain output GND – 0.3 ~ + 7 Output VOUT voltage CMOS output GND – 0.3 ~ VDD + 0.3 CT pin input voltage VCT GND – 0.3 ~ VDD + 0.3 ∗1 Power dissipation: VSOF5 Pd 210 ∗2 Power dissipation: SOP4 400 Pd ∗3 Power dissipation: SSOP5 Pd 540 Operating temperature range Topr – 40 ~ + 125 Storage temperature range Tstg – 55 ~ + 125 V V ∗1 Derating : 2.
PAGE 3
Characteristic chart and measurement circuit I/O characteristic 7 Detection voltage/Release voltage 2.0 BU4216F Vcc - Vo 6 0.5 [BU4216F] [BU4216F] 0.4 low to high(VDET+∆VDET) 5 0.3 3 high to low(VDET) 1.5 ICC[ µA ] VDET [V] 4 VO [V] Circuit current when ON 0.2 2 0.1 1 0 1 2 3 4 VCC [V] 5 6 A 4.0 0.6 3.0 3.0 50 Ta[°C] A 100 1.0 0.5 0 130 1 VO [V] VDD VDD Vcc=1.2V 2.0 Vcc=1.2V 1.0 0 [BU4216F] Ta=-40°C IO [mA] 4.0 0 -40 VOUT "L" output current [Ta=-40°C] 0.
PAGE 4
Series lineup Detection voltage VDET (V) Part No. Circuit current (µA Typ.) Open drain output CMOS output Min. Typ. Max.
PAGE 5
Appendix Notes No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered.