S1F76620 Epson Electronics America, Inc., S1F76620 Datasheet

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S1F76620

Manufacturer Part Number
S1F76620
Description
Dc-dc Converter.
Manufacturer
Epson Electronics America, Inc.
Datasheet
S1F76620
Technical Manual
Rev.1.2

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S1F76620 Summary of contents

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... S1F76620 Technical Manual Rev.1.2 ...

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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 ...

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Configuration of product number DEVICES S1 F 76620 M 0C0 000 Packing specifications Specifications Shape (M : SOP, SSOP) Model number Model name (F : Power Supply) Product classification (S1:Semiconductors) ...

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... Pin Assignment.............................................................................................................................2 4.2 Pin Function ..................................................................................................................................2 4.3 Outline Dimensional Drawing ......................................................................................................3 5. FUNCTIONAL DESCRIPTION ........................................................................................4 5.1 CR Oscillation Circuit ...................................................................................................................4 5.2 Voltage Converter .........................................................................................................................4 6. ELECTRICAL CHARACTERISTICS ...............................................................................5 6.1 Absolute Maximum Ratings .........................................................................................................5 6.2 Recommended Operating Conditions.........................................................................................6 6.3 Electrical Characteristics .............................................................................................................7 6.4 Measuring Circuit..........................................................................................................................7 6.5 Characteristic Data Sheets...........................................................................................................8 7. EXTERNAL CONNECTION SAMPLES ........................................................................12 S1F76620 Technical Manual (Rev.1.2) Table of Contents EPSON i ...

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... The S1F76620 is a highly efficient and low power consuming CMOS DC-DC converter. It assures double boosting output (3 to 16V) for input voltage (1.5 to 8V). The S1F76620 enables you to drive an IC (liquid crystal driver, analog IC, etc.) that would usually require another power supply in addition to the logic main power, using a single power supply. Therefore suitable for supplying micro-power to mobile handset such as PDA ...

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... Positive pin connected to pump-up capacitor for 3rd boosting 8 V Output pin for double boosting OUT OFF Fig.4.1 SOP3B - 8 Pins Pin Assignment Function level: Internal clock operation mode level: Internal clock operation stop mode, external clock EPSON V OUT CAP1+ CAP1 S1F76620 Technical Manual (Rev.1.2) ...

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... Outline Dimensional Drawing D 8PIN Index 1PIN Index □ Note: The drawing is subject to change for improvement without prior notice. S1F76620 Technical Manual (Rev.1.2) Reference S1F76620M0C SOP3B-8PIN 5PIN 4PIN □ S Dimension in Milimeter Symbol Min. Typ. D 4. 0.30 c 0.15 e 1.27 L 0.40 He 6.00 γ EPSON 4 ...

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... FUNCTIONAL DESCRIPTION 5. FUNCTIONAL DESCRIPTION 5.1 CR Oscillation Circuit The S1F76620 incorporates a CR oscillation circuit as an internal oscillation circuit, connecting the external resistor R for oscillation between the OSC1 and OSC2 pins. OSC Note 1: Since the oscillation frequency varies depending on the wiring capacity, install the shortest possible ...

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... Note 1: The use under conditions exceeding the absolute maximum ratings above can cause permanent destruction of the IC. Operation at the absolute maximum ratings for a long time can cause a significant reduction in reliability. Note 2: All the voltages are based on GND = 0V. S1F76620 Technical Manual (Rev.1.2) 6. ELECTRICAL CHARACTERISTICS Standard value Unit Min. ...

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... RL Poff V OUT 8 1 GND CAP1 OSC1 CAP1 3 6 OSC2 Fig.6.2.1 Recommended Circuit EPSON (T =-40 to +85°C) a Remarks R =1MΩ OSC Note 2: C2≥10µF CL/C2≥1/20 R =1MΩ OSC R =1MΩ OSC - - - - S1F76620 Technical Manual (Rev.1.2) ...

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... Static current IQ Oscillation frequency f OSC Output impedance R OUT Boosting power Peff conversion efficiency Input leak current IL Note 1: All the voltages are based on GND = 0V. 6.4 Measuring Circuit V I opr S1F76620 Technical Manual (Rev.1.2) 6. ELECTRICAL CHARACTERISTICS Standard value Min. Typ ...

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... Fig.6.5.2 Oscillation frequency - Temperature =35kHz Fig.6.5.4 Output voltage (V EPSON = Ta[ C] Ta= = =10 µ [mA Output current O S1F76620 Technical Manual (Rev.1.2) 100 30 ...

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... Fig.6.5.5 Output voltage ( Output current O 300 250 200 150 100 [V] DD Fig.6.5.7 Output impedance - Input voltage S1F76620 Technical Manual (Rev.1.2) 6. ELECTRICAL CHARACTERISTICS Fig.6.5.6 Output voltage (Vo) - Output current 300 o Ta= =5mA O 250 200 150 ...

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... Io[mA] - Output current Input current - Output current I =20mA O I =10mA O I =5mA O o Ta= =2mA =10 µ 100 1000 f [kHz] OSC - Oscillation frequency S1F76620 Technical Manual (Rev.1.2) ...

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... Fig.6.5.13 Boosting power conversion efficiency - Oscillation frequency 1.5 1.4 1.3 Ta= =10 µ 1.2 0.1 1.0 10 Ω Fig.6.5.15 Boosting start voltage - Load resistance S1F76620 Technical Manual (Rev.1.2) 6. ELECTRICAL CHARACTERISTICS 100 =10mA =3V =10 µ 1000 Fig.6.5.14 Boosting power conversion efficiency 100.0 EPSON I =5mA ...

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... Fig.7.5 Output Voltage - Output Current EPSON ) from OUT V OUT for Double Boosting . OUT OFF OUT 2 V CAP1 ’ OSC 3 OSC1 CAP1- 6 1MΩ OSC2 Ta=25℃ [mA] OUT S1F76620 Technical Manual (Rev.1.2) V OUT C1’ + 10µF - ...

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... Serial Connection The serial connection in the S1F76620 (connecting V stage respectively) further increases the output voltage. However, the serial connection raises output impedance. Fig.7.6 shows an example of serial connection for obtaining OFF I A OUT OSC 3 OSC1 1MΩ 4 OSC2 ...

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... DD V (0V) SS Fig.7.9 Diagram of Voltage Relations in Serial Connection ( can be used as the next-stage input (V SS First stage Next stage Max.8V EPSON ’ ≤ 10V), the ’ ’ ’). ’ (+16V) OUT V ’ ’ SS S1F76620 Technical Manual (Rev.1.2) ...

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... Negative Voltage Conversion The S1F76620 converts input voltage to negative voltage for double boosting through the circuit shown in Fig.7.10. However, the output voltage rises by forward voltage V For example, as shown in Fig.7.10, V -3.8V (+5V (0V) SS Fig.7.11 Diagram of Voltage Relations for Negative Voltage Conversion S1F76620 Technical Manual (Rev ...

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... (0V Vo2(-3.8V Positive Voltage Conversion 30 40 Fig.7.16 Output Voltage - Output Current EPSON ’ ’ 10µF A OUT - + - C2 10µ 10µF Vo2 Ta= =5mA '[mA] OUT S1F76620 Technical Manual (Rev.1.2) 40 ...

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... AMERICA EPSON ELECTRONICS AMERICA, INC. HEADQUARTERS 2580 Orchard Parkway San Jose , CA 95131,USA Phone: +1-800-228-3964 FAX: +1-408-922-0238 SALES OFFICES Northeast 301 Edgewater Place, Suite 210 Wakefield, MA 01880, U.S.A. Phone: +1-800-922-7667 FAX: +1-781-246-5443 EUROPE EPSON EUROPE ELECTRONICS GmbH HEADQUARTERS Riesstrasse 15 80992 Munich, GERMANY Phone: +49-89-14005-0 ...

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