Datenblatt-Suchmaschine für elektronische Bauteile |
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LM3555 Datenblatt(PDF) 3 Page - Texas Instruments |
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LM3555 Datenblatt(HTML) 3 Page - Texas Instruments |
3 / 38 page A3 B3 C3 D3 A2 B2 C2 D2 A1 B1 C1 D1 A1 B1 C1 D1 A2 B2 C2 D2 A3 B3 C3 D3 3 LM3555 www.ti.com SNVS594G – DECEMBER 2008 – REVISED APRIL 2016 Product Folder Links: LM3555 Submit Documentation Feedback Copyright © 2008–2016, Texas Instruments Incorporated 5 Pin Configuration and Functions YZR Package 12-Pin DSBGA Top View YZR Package 12-Pin DSBGA Bottom View Pin Functions PIN I/O DESCRIPTION NUMBER NAME A1 PGND — Power ground A2 SGND — Signal ground A3 VIN I Input voltage pin of the device. Connect input bypass capacitor very close to this pin. B1 SW — Inductor connection B2 TORCH I Torch pin. Driving this pin high enables torch mode. B3 IND O Red indicator LED current source. Connect to RED LED anode C1 VOUT O Boost output. Connect output bypass capacitor very close to this pin C2 STROBE I/O Strobe signal input pin to synchronize flash pulse in I2C mode. This signal usually comes from the camera processor. In simple logic mode this pin, when tied to a voltage rail through a pullup resistor indicates the number of LEDs in the system. C3 I2C / EN I I2C / EN-logic selection. High = I2C mode, Low = simple logic mode. D1 VLED O LED current source. Connect to the anode of the flash LED. One or two LEDs can be connected in series. D2 SDA / EN2 I/O EN2 signal pin in simple logic mode. I2C data signal in I2C mode. D3 SCL / EN1 I EN1 signal pin in simple logic mode. I2C clock signal in I2C mode. |
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