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LM3551 Fiches technique(PDF) 2 Page - Texas Instruments |
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LM3551 Fiches technique(HTML) 2 Page - Texas Instruments |
2 / 23 page Top View Bottom View Die-Attach Pad(DAP) GND 11 10 9 12 13 8 14 4 5 6 3 2 7 1 Die-Attach Pad(DAP) GND 11 10 9 12 13 8 14 4 5 6 3 2 7 1 LM3551, LM3552 SNVS371D – AUGUST 2005 – REVISED MAY 2013 www.ti.com Connection Diagram 14-Pin WSON Package Figure 1. Package Number NHL0014B PIN DESCRIPTIONS Pin Name Function 9 VIN Input Voltage. Input range: 2.7V to 5.5V. 13 T/F TORCH/FLASH Pin. Low = Torch Mode, High = Flash Mode 8 SW Switch Pin 10 OVP Over Voltage Protection Pin 3 VC Compensation network connection. Connected to the output of the voltage error amplifier. SD(LM3551) Shutdown pin logic input. High = Shutdown, Low = Enabled 5 EN(LM3552) Enable pin logic input. High = Enabled, Low = Shutdown 12 FTO Flash Timeout. External capacitor determines max. duration allowed flash pulse 11 SS Soft Start Pin 4 FB Feedback Pin 14 FET-T Torch FET Drain 2 FET-F Flash FET Drain 1,7,DAP GND Ground Analog Ground. Connect the ground of the compensation components, CFTO and soft start cap to 6 AGND AGND. AGND must be connected to the GND pin through a low impedance connection. These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. 2 Submit Documentation Feedback Copyright © 2005–2013, Texas Instruments Incorporated Product Folder Links: LM3551 LM3552 |
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