Epson S1F77B01 User Manual

Power Supply IC

S1F77B01

Technical Manual

SEIKO EPSON CORPORATION

Rev.1.3

NOTICE

No part of this material may be reproduced or duplicated in any form or by any means without the written permission of Seiko Epson. Seiko Epson reserves the right to make changes to this material without notice. Seiko Epson does not assume any liability of any kind arising out of any inaccuracies contained in this material or due to its application or use in any product or circuit and, further, there is no representation that this material is applicable to products requiring high level reliability, such as, medical products. Moreover, no license to any intellectual property rights is granted by implication or otherwise, and there is no representation or warranty that anything made in accordance with this material will be free from any patent or copyright infringement of a third party. This material or portions thereof may contain technology or the subject relating to strategic products under the control of the Foreign Exchange and Foreign Trade Law of Japan and may require an export license from the Ministry of International Trade and Industry or other approval from another government agency.

All other product names mentioned herein are trademarks and/or registered trademarks of their respective companies.

Configuration of product number

zDEVICES

S1 F 77B01 B 0C00 00



Packing specifications Specifications Shape

(B:WCSP, Y:SOT)

Model number Model name

(F : Power Supply)

Product classification

(S1:Semiconductors)

CONTENTS

1. DESCRIPTION.................................................................................................................................1

2. FEATURES ......................................................................................................................................1

3. PACKAGE........................................................................................................................................1

4. APPLICATION .................................................................................................................................1

5. BLOCK DIAGRAM...........................................................................................................................2

6. SELECTION GUIDE.........................................................................................................................3

7. PIN ASSIGNMENT...........................................................................................................................3

8. MARKING ........................................................................................................................................4

9. MARKING ........................................................................................................................................5

10. PIN DESCRIPTION..........................................................................................................................6

11. ABSOLUTE MAXIMUM RATINGS ..................................................................................................6

12. TIMING CHARTS AND RECOMMENDED CIRCUIT DIAGRAMS...................................................7

13. ELECTRICAL CHARACTERISTICS, DELAY CIRCUIT BUILT-IN PRODUCTS..............................8

14. CHARACTERISTIC MEASURING CIRCUITS.................................................................................9

15. DIMENSIONS.................................................................................................................................12

16. CHARACTERISTIC EXAMPLE .....................................................................................................14

S1F77B01 Technical Manual (Rev.1.3) EPSON i

1. DESCRIPTION

The S1F77B01 is a CMOS detector that runs at superlow consumption current 350nA (Typ.). The detecting voltage can be selected in the range from 1.5V to 4.6V which is set to high accuracy ±2.0% in

0.1V steps. The power voltage is allowable in the range of low voltage 0.9 to 5.5V. This detector adopts a compact package, which is available in a compact mobile device.

2. FEATURES

• Superlow power consumption: 350nA (VDD=3.0V, Typ.)

• Range of detecting voltage: 1.5 to 4.6V (in 0.1V steps)

• Accuracy of detecting voltage: ±2.0%

• Hysteresis characteristics: 5.0% Typ.

• Temperature characteristics of detecting voltage: ±100 ppm/°C (Typ.)

• Output type: CMOS, Nch open drain

3. PACKAGE

SOT23 5pin WCSP 4pin

4. APPLICATION

• Microcomputer and logic circuit resetting

• Battery checker

• Level discriminator

• Waveform rectifier circuit

• Backup power switching circuit

• Power failure detector

• Overcurrent protection circuit

S1F77B01 Technical Manual (Rev.1.3) EPSON 1

5. BLOCK DIAGRAM

zCMOS output

zNch open drain output

Note: SOT23 package product only; otherwise, a product with DS pin set to NC

The DS pin must be fixed to “LOW” outside the IC.

DS*

VREF

Delay circuit

VREF

Delay circuit

OUT

2 EPSON S1F77B01 Technical Manual (Rev.1.3)

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