S1F76680 Epson Electronics America, Inc., S1F76680 Datasheet
S1F76680
Related parts for S1F76680
S1F76680 Summary of contents
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... S1F76680 Technical Manual Rev.1.22 ...
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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 76680 F 5A1 00B Packing specifications Specifications Shape (F:QFN) Model number Model name (F : Power Supply) Product classification (S1:Semiconductors) ...
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... LED current setting.......................................................................................................................8 7.3.1 Setting of maximum current value ............................................................................................8 7.3.2 Setting of automatic luminance control..................................................................................... slave function........................................................................................................................17 7.5 Other functions ...........................................................................................................................19 8. ABSOLUTE MAXIMUM RATINGS ................................................................................20 9. ELECTRICAL CHARACTERISTICS .............................................................................21 10. EXTERNAL CONNECTION DIAGRAM ......................................................................22 10.1 Standard Connection Examples ..............................................................................................22 10.2 Recommended connection parts.............................................................................................23 <Precautions> ..................................................................................................................24 S1F76680 Technical Manual (Rev.1.22) Table of Contents EPSON i ...
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... DESCRIPTION S1F76680 is a LED driver that can drive four (three) white LEDs lamps for backlighting in parallel connection. Necessary power is supplied to LED by the charge pump type DC/DC converter incorporated in S1F76680. Also, the charge pump type DC/DC converter selects 1x or1.5x voltages on its own according to necessity. ...
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... C2N V DD2 V SS2 PDOUT CPD RPD PD Sensor SAMPL V DDL CV DDL SCL SDA RESET 2 Charge pump Automatic luminance control 2 I C-Bus serial interface EPSON S1F76680 V OUT CV OUT LED4 LED3 V SS3 LED2 LED1 AOUT RLED CLED CLED V REF CV S1F76680 Technical Manual (Rev.1.22) REF ...
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... LED driver The LED driver drives four (three) white LEDs lamps in parallel connection. Connect it with RLED, a resistor for maximum current setting. The LED driver drives LED based on the settings of I S1F76680 Technical Manual (Rev.1.22) 4. DESCRIPTION OF BLOCK DIAGRAM pin. OUT 2 C, automatic luminance control and RLED. ...
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... V Set the rear surface metal part to the open or grounding (test) (test) (test) EN3 S1F76680 V SS2 (test) V DDL EN2 9 Function SS1 SS2 SS3 EPSON 25 24 LED4 LED3 V SS3 LED2 LED1 A OUT V REF 17 EN1 16 S1F76680 Technical Manual (Rev.1.22) ...
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... It is pulled down internally. Fix EN3 pin to LOW when activating automatic luminance control. If EN3 pin is fixed to HIGH, LED will light at maximum luminance regardless of the setting of EN2. S1F76680 Technical Manual (Rev.1.22 DD1 is a power supply pin for the charge pump circuit, connect a bypass ...
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... Pin that connects to capacitor for delaying LED current change Connect pin for LED maximum current setting resistor Internal reference voltage pin. immediately next to V REF EPSON Function Function 2 Resets I C register Exits reset Sampling cycle (TSAMPL) 655msec 1310msec Function Function Function pin. REF S1F76680 Technical Manual (Rev.1.22) ...
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... Resetting of the I C register is cancelled, and SCL and SDA are become effective. Start EN1. S1F76680 starts operating from the standby status. 4 The software start begins. (It is possible to start 5 After the software start period ends, the setting to turn on the LED will become effective. ...
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... C register (SEN2). (See No.P21 register described later cannot exceed this maximum current value. S1F76680 AOUT V SS3 RLED EPSON Operating state Standby LED lights off 1 (At maximum current) 2 (Under automatic luminance control) (At fixed current set in the register SS3 S1F76680 Technical Manual (Rev.1.22) ...
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... VPD to evaluate brightness on the scale 16. The voltage at PDOUT and PD pins the standby state. Measures, such as shorter wiring between the sensor and sense resistor and S1F76680, stable V supply, etc, are required to avoid noise influence as much as possible recommended that CPD, a capacitor in the range from 0.1 to 1µF, be connected between VPD and PDOUT pin as shown below as a measure ...
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... OPERATIONAL AND FUNCTIONAL DESCRIPTION [3] Selection of the change time of the automatic luminance control current S1F76680 judges brightness at every sampling cycle and then automatically changes LED current so that it may correspond to the brightness. When the automatic luminescence control is turned on, LED current value changes in a unit of 1/127 of ILEDmax ...
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... Switching from the fixed current to the automatic luminescence control must be done after making sure that the time of TLEDON4>TLEDON1+TELDON3 and TLEDON4>TLEDON2 have elapsed. EN1 EN3/NLED EN3/(SEN2) TLEDON1 ILED (LED current) S1F76680 Technical Manual (Rev.1.22) 7. OPERATIONAL AND FUNCTIONAL DESCRIPTION 1 (Max. current) and LED lighting TLEDON3 (Automatic luminescence control) 2 ...
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... After LED has been lit, change of TUP becomes available from 1AH register at an address (to be described 2 later C-Bus. [5] Delay in LED current change S1F76680 allows providing delay to the LED current change waveform and thus realizing a smoother current change by connecting the capacitor CLED to CLED pin. Connection of CLED=1µF is recommended. LED current change waveform 12 ...
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... Ambient luminance evaluated by a luminance sensor and sensor current IPD typically shows the following inclination. 10 S1F76680 evaluates ambient brightness using value of sensor’s VPD on the scale 16. The following table shows relation between VPD and brightness. VPD1=0.003 VPD2=0.004 VPD3=0 ...
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... VPD(mV) Brightness RPD(kΩ) Dark (low sensor current) Bright (high sensor current) EPSON Bright ness 15 ness 16 Brightness is judged. IPD(µA) IPDn=VPDn/RPD IPD1=0.03 IPD2=0.04 IPD3=0.06 IPD4=0.10 IPD5=0.16 IPD6=0.26 IPD7=0.40 100 IPD8=0.63 IPD9=0.79 IPD10=1.26 IPD11=1.73 IPD12=2.99 IPD13=4.72 IPD14=7.87 IPD15=11.97 S1F76680 Technical Manual (Rev.1.22) ...
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... Brightness 3 Brightness 4 Brightness 5 Brightness 6 Brightness 7 Brightness 8 Brightness 9 Brightness 10 Brightness 11 Brightness 12 Brightness 13 Brightness 14 Brightness 15 Brightness 16 S1F76680 Technical Manual (Rev.1.22) 7. OPERATIONAL AND FUNCTIONAL DESCRIPTION 2 C-Bus, which will be explained later. LED current setting address 02H Dark 03H (low sensor current) 04H 05H 06H 07H ...
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... Bright 10H (high sensor current) 11H An example of LED current setting VPD EPSON Setup example 105 108 108 108 108 108 108 S1F76680 Technical Manual (Rev.1.22) ...
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... Brightness 1 = (D7,D6,D5,D4,D3,D2,D1,D0) = (0,0,0,0,X,X,X,X) Brightness 2 = (D7,D6,D5,D4,D3,D2,D1,D0) = (0,0,0,1,X,X,X,X) Brightness 16 (D7,D6,D5,D4,D3,D2,D1,D0) = (1,1,1,1,X,X,X,X) Setting of register-based fixed current S1F76680 allows lighting LED forcibly at a fixed current value without resorting to brightness of the environment. Just like the current setting in the automatic luminescence control, set this fixed current based on the following formula and using 7 bits from D0 (LSB (MSB) at address 01H the dummy. ...
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... YE2 YE1 YE0 LED current setting R/W R/W R/W for brightness YF2 YF1 YF0 LED current setting R/W R/W R/W for brightness TUP2 TUP1 TUP0 Automatic luminance control R/W R/W R/W LED current change time setting S1F76680 Technical Manual (Rev.1.22) information ...
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... Even if it causes no problem to power on EN2 and EN3 after soft start, nonetheless, LED starts to light up after soft start. • Charge pump function S1F76680 is equipped with a charge pump type DC/DC converter, which generates necessary voltage to light up LED from voltage supplied to V This charge pump circuit operates while selecting the booster magnification from 1.5 and 1 times according to necessity, thus, provides a longer operating time to battery-operated devices ...
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... EPSON SS1 SS2 Unit Applicable pin DD1 DD2 V EN1, EN2, EN3, SAMPL V V DDL V SCL, SDA, RESET mA V OUT mA LED1, LED2, LED3, LED4 mW - °C - °C - S1F76680 Technical Manual (Rev.1.22) =0V SS3 Remarks Note 1 - Note 1 - Note 2 Note ...
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... IH2 L level input voltage 2 V IL2 Input current 2 I IH2 H level input voltage 3 V IH3 L level input voltage 3 V IL3 Input current 3 (H) I IH3 Input current 3 (L) I IL3 S1F76680 Technical Manual (Rev.1.22) 9. ELECTRICAL CHARACTERISTICS If unspecified, V Specification Unit Min. Typ. Max. 3.0 3.6 4.6 V 1.6 1.8 3 1.0 1.5 mA µ ...
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... C2N V DD2 V SS2 PDOUT CPD RPD PD Sensor SAMPL V DDL CV DDL SCL SDA RESET 22 Charge pump Automatic luminance control 2 I C-Bus serial interface EPSON S1F76680 V OUT CV OUT LED4 LED3 V SS3 LED2 LED1 AOUT RLED CLED CLED V REF CV S1F76680 Technical Manual (Rev.1.22) REF ...
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... RLED LED current adjustment resistor CVOUT Output smoothing capacitor for charge pump Sensor Luminance sensor CPD Noise removal CLED Current change delay * An example of recommended sensor TDK BCS2015G1 S1F76680 Technical Manual (Rev.1.22) 10. EXTERNAL CONNECTION DIAGRAM Maximum applied voltage and V pin DD1 V ...
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... Design and mount the IC to prevent its exposure to light during actual operation. (2) Also, do not expose the ICs to the light in the inspection phase. (3) Take all surfaces, top, bottom and sides, of the IC chip into consideration when blocking out light. 24 EPSON S1F76680 Technical Manual (Rev.1.22) ...
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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 ...