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LM3556TME Datasheet(PDF) 3 Page - Texas Instruments |
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LM3556TME Datasheet(HTML) 3 Page - Texas Instruments |
3 / 39 page A1 A2 B1 B2 B3 A3 C2 C1 C3 D2 D3 A4 B4 C4 D4 D1 LM3556 www.ti.com SNVS796D – AUGUST 2011 – REVISED OCTOBER 2015 5 Pin Configuration And Functions YFQ Package 16-Pin DSBGA Top View Pin Functions PIN TYPE DESCRIPTION NUMBER NAME High-side current source output for flash LED. Both pins must be connected for proper A1, B1 LED Power operation. Step-up DC-DC converter output. Connect a 10-µF ceramic capacitor between this pin B2, A2 OUT Power and GND. B3, A3 SW Power Drain connection for internal NMOS and synchronous PMOS switches. A4, B4 GND Ground Ground C1 TEMP Power Threshold detector for LED temperature sensing and current scale back. Active high hardware torch enable. Drive TORCH high to turn on Torch or Movie mode. C2 TORCH Power Used for external PWM Mode. Has an internal pulldown resistor of 300 k Ω between TORCH and GND. Active high hardware flash enable. Drive STROBE high to turn on flash pulse. STROBE C3 STROBE I/O overrides TORCH. Has an internal pulldown resistor of 300 k Ω between STROBE and GND. Input voltage connection. Connect IN to the input supply, and bypass to GND with a 10- C4 IN Input µF or larger ceramic capacitor. Configurable dual polarity power amplifier synchronization input. Has an internal pulldown D1 TX I/O resistor of 300 k Ω between TX and GND. D2 SDA I/O Serial data input/output. D3 SCL Input Serial clock input. Active high enable pin. High = standby, low = shutdown/reset. There is no internal D4 ENABLE Power pulldown resistor on this pin. Copyright © 2011–2015, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LM3556 |
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