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LM3509 Datasheet(PDF) 3 Page - Texas Instruments |
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LM3509 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 30 page 1 2 3 4 5 6 7 8 9 10 DAP 10 9 8 7 6 5 4 3 2 1 DAP TOP VIEW BOTTOM VIEW 2.7V to 5.5V SW IN OVP MAIN SUB/FB SCL SDA GND RESET/GPIO VIO SET RSET LM3509 R1 R2 OLED Display VOLED = 18V OLED Panel Power Supply 10 PH 1 PF 2.2 PF CIN COUT 12 k: 20 mA 40 mA 10 k: 140 k: 10 k: 10 k: LM3509 www.ti.com SNVS495D – FEBRUARY 2007 – REVISED MAY 2013 Connection Diagram Top View Figure 1. 10-Pin WSON (3mm × 3mm × 0.8mm) PIN DESCRIPTIONS Pin Name Function 1 MAIN Main Current Sink Input. 2 SUB/FB Secondary Current Sink Input or 1.25V Feedback Connection for Constant Voltage Output. 3 SET LED Current Setting Connection. Connect a resistor from SET to GND to set the maximum LED current into MAIN or SUB/FB (when in LED mode), where ILED_MAX = 192×1.244V/RSET. 4 VIO Logic Voltage Level Input 5 RESET/GPIO Active Low Hardware Reset and Programmable General Purpose I/O. 6 SW Drain Connection for Internal NMOS Switch 7 OVP Over-Voltage Protection Sense Connection. Connect OVP to the positive terminal of the output capacitor. 8 IN Input Voltage Connection. Connect IN to the input supply, and bypass to GND with a 1µF ceramic capacitor. Copyright © 2007–2013, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LM3509 |
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