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LM3560 Datasheet(PDF) 1 Page - Texas Instruments |
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LM3560 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 48 page  IN OUT LED2 LEDI/NTC SW HWEN TX1/TORCH TX2 SDA SCL LM3560 GND 1 2H/2.2 2H 10 2F 10 2F Flash LED2 STROBE LED1 Flash LED1 Optional Indicator Current Source or Thermistor Sensing Circuit 2.5V to 5.5V LM3560 www.ti.com SNOSB43B – SEPTEMBER 2011 – REVISED AUGUST 2013 Synchronous Boost Flash Driver With Dual 1-A High-Side Current Sources (2-A Total Flash Current) Check for Samples: LM3560 1 FEATURES APPLICATIONS 2 • Dual High-Side Current Sources Allow for • Camera Phone LED Flash Grounded Cathode LED Operation • White LED Biasing • Accurate and Programmable LED Current from 31.25 mA to 2 A DESCRIPTION The LM3560 is a 2MHz fixed frequency synchronous • Independent LED Current Source boost converter with two 1000 mA constant current Programmability drivers for high-current white LEDs. The dual high- • Up to 90% Efficient side current sources allow for grounded cathode LED • Ultra-Small Solution Size: < 26 mm2 operation and can be tied together for providing flash currents at up to 2A through a single LED. An • Four Operating Modes: Torch, Flash, Privacy adaptive regulation method ensures the current for Indicate, and Message Indicator each LED remains in regulation and maximizes • 4-Bit ADC for VLED Monitoring efficiency. • LED Thermal Sensing and Current Scale-Back Typical Application Circuit • Hardware Flash and Torch Enable • Dual Synchronization Inputs for RF Power Amplifier Pulse Events • LED and Output Disconnect During Shutdown • Open and Short LED Detection • 400-kHz I2C-Compatible Interface • Active Low Hardware Reset • 16-Bump (1.97mm x 1.97mm x 0.6mm) DSBGA Table 1. Application Circuit Component List Component Manufacturer Value Part Number Size (mm) Rating L Toko 1µH FDSD0312-1R0 3 x 3 x 1.2 3.4A COUT Murata 10 µF GRM188R60J106M 1.6 × 0.8 × 0.8 (0603) 6.3V CIN Murata 10 µF GRM188R60J106M 1.6 × 0.8 × 0.8 (0603) 6.3V LEDs Lumiled Flash LED PWF-4 VF = 3.6V @1A 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2011–2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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