s1f81310f0a Epson Electronics America, Inc., s1f81310f0a Datasheet
s1f81310f0a
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s1f81310f0a Summary of contents
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... S1F81310F0A Technical Manual Rev.1.0 ...
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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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... APPLICABLE DEVICES .................................................................................................1 2. OVERVIEW .....................................................................................................................1 3. BLOCK DIAGRAM ..........................................................................................................1 4. PIN LAYOUT ...................................................................................................................2 5. PIN DESCRIPTION .........................................................................................................2 6. ABSOLUTE MAXIMUM RATINGS..................................................................................3 7. ELECTRICAL CHARACTERISTICS ...............................................................................4 8. FUNCTIONAL DESCRIPTION ........................................................................................5 9. TYPICAL APPLICATION CIRCUIT...............................................................................13 10. ASSEMBLING PRECAUTION ....................................................................................14 11. PACKAGE DIMENSIONS ...........................................................................................14 12. PACKAGE MARKINGS ..............................................................................................15 S1F81310F0A (Rev.1.0) TABLE OF CONTENTS EPSON i ...
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... APPLICABLE DEVICES This document applies to the S1F81310F0A white LED driver ICs. 2. OVERVIEW The S1F81310 is a charge-pump type white LED driver. It can drive white LEDs connected in parallel from the VOUT output voltage. The LED driver current is controlled using a 6-channel LED current adjustment circuit ...
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... Group A enable input (active-HIGH) LED drive current control 6 (connect to GND when not used) LED drive current control 5 (connect to GND when not used) LED drive current control 4 (connect to GND when not used) Ground EPSON Function Ip: Input with pull-down resistor built-in S1F81310F0A (Rev.1.0) ...
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... When mounted 1.6mm glass epoxy board, the power dissipation is related to the operating temperature by the following equation – Ta) / θ MAX J D Maximum junction temperature : T Operating temperature Thermal resistance 1600 1200 S1F81310F0A (Rev.1.0) Symbol SEL V DIN1 OUT P ...
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... EN duty 50% us Minimum EN pulse H-level width us Minimum EN pulse L-level width Time from when EN1=EN2=LOW 1.63 ms until LED drive circuit shutdown V HIGH-level input voltage range 0.6 V LOW- level input voltage range 10.0 μ 3.6V, Pull-down pin EN *1: Design guaranteed value S1F81310F0A (Rev.1.0) rising edge ...
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... LED drive current is reset to the maximum current value. As the current is set to the maximum value on the first pulse, applications without pulse input can also be employed (by controlling brightness using RSET). EN1 EN input pulse GND LED current setting variation using EN input pulse modulation S1F81310F0A (Rev.1. RSET ...
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... The internal enable signal CE goes HIGH after the first rising edge of the EN1 input signal, but if EN2 input is LOW the LED drive circuit is disabled and no LED current flows in group B. EN1 is independent of the EN2 input rising edge pulses. S1F81310F0A (Rev.1. ...
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... EN1 and EN2 allows a single device to independently adjust the backlight brightness of 2 screens. With a 6-0 group setting, EN2 should be connected to EN1. Also, any unused DIN LED drive pins should be connected to GND. Mode 6-0 group 5-1 group 4-2 group 3-3 group S1F81310F0A (Rev.1. ILED off ...
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... If the EN signals are input after POR time is expiered, the soft start time begin from the firest EN input rising edge. The current setting can be adjusted during the soft-start time. LED current starts flow immediately before the soft start time expires. S1F81310F0A (Rev.1.0) ...
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... Low VF LED High VOUT mode switching time comparison due to drive LED VF variation S1F81310F0A (Rev.1.0) 8. FUNCTIONAL DESCRIPTION If the EN signals are input after power is applied and the POR time has expired, the internal enable signal CE switches with the EN1+EN2 signal. ...
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... ILED detector circuit raises the ILED undercurrent signal when the voltage falls below the 1.5x mode threshold. The ILED undercurrent condition causes the VOUT mode to switch to 1.5x. Before switching to 1.5x 4.2V mode, the VOUT voltage is lower than 4.2V but sufficient still flows to drive the LEDs. S1F81310F0A (Rev.1.0) ...
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... VIN voltage MODE RESET 1.4sec/cycle MODE HOLD L: hold VOUT MODE H:1.5x, L:1.0x VOUT voltage undercurrent detector H: low ILED VOUT drop due to the mode reset signal S1F81310F0A (Rev.1.0) 1.4sec/cycle 1.0x mode min 85us max 200us ILED detector ignore V 1.4s max 200us EPSON 8. FUNCTIONAL DESCRIPTION Mode reset signal is output once every 1 ...
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... If VIN falls and the drive LED VF exceeds the calculated value, VIN will take ILED down with it below the required setting. The relationship in equation is shown graphically for values of IOUT = 30/60/90/120mA. VIN voltage and LED forward-direction voltage drop limit value 12 ... Eqn ... Eqn 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.6 2.8 3.0 3.2 3.4 VIN [V] EPSON 30mA 60mA 90mA 120mA 3.6 3.8 4.0 S1F81310F0A (Rev.1.0) ...
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... Group A DIN2 Group A DIN1 Group A RSET ISET 20kΩ ILED max = 20mA C1P x1.5 Charge Pump C1M C1 Group 3-3 setting, ILEDmax = 20mA circuit example S1F81310F0A (Rev.1.0) 9. TYPICAL APPLICATION CIRCUIT DIN4 DIN5 DIN6 EN1 LED current control VOUT mode controller VREG PGND C2M C2P ...
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... ASSEMBLING PRECAUTION 10. ASSEMBLING PRECAUTION Package corner metals are not IC I/O pins. Don’t connect any lines to these corner metals. 11. PACKAGE DIMENSIONS 14 Bottom View Unit (mm) EPSON (Weight: 0.039g) (Plate of PIN: Sn-Bi) S1F81310F0A (Rev.1.0) ...
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... PACKAGE MARKINGS S1F81310F0A (Rev.1.0) (1) to (3) : Date Code EPSON 12. PACKAGE MARKINGS 15 ...
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... AMERICA EPSON ELECTRONICS AMERICA, INC. HEADQUARTERS 150 River Oaks Parkway San Jose, CA 95134, U.S.A. Phone: +1-800-228-3964 FAX: +1-408-922-0238 SALES OFFICES West 1960 E.Grand Avenue Flr 2 El Segundo, CA 90245, U.S.A. Phone: +1-800-249-7730 FAX: +1-310-955-5400 Central 101 Virginia Street, Suite 290 Crystal Lake, IL 60014, U.S.A. Phone: +1-800-853-3588 ...