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LM3224 Datasheet(PDF) 1 Page - Texas Instruments |
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LM3224 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 27 page LM3224 RFB1 L CC D RC CIN COUT RFB2 SW 5 FB 2 GND 4 VC VOUT VIN Battery or Power Source SS 8 CSS Optional FSLCT VIN 6 7 SHDN 3 1 LM3224 www.ti.com SNVS277C – DECEMBER 2004 – REVISED MARCH 2013 LM3224 615kHz/1.25MHz Step-up PWM DC/DC Converter Check for Samples: LM3224 1 FEATURES DESCRIPTION The LM3224 is a step-up DC/DC converter with a 2 • Operating Voltage Range of 2.7V to 7V 0.15 Ω (typ.), 2.45A (typ.) internal switch and pin • 615kHz/1.25MHz Pin Selectable Frequency selectable operating frequency. With the ability to Operation convert 3.3V to multiple outputs of 8V, -8V, and 23V, • Over Temperature Protection the LM3224 is an ideal part for biasing TFT displays. With the high current switch it is also ideal for driving • Optional Soft-Start Function high current white LEDs for flash applications. The • 8-Lead VSSOP Package LM3224 can be operated at switching frequencies of 615kHz and 1.25MHz allowing for easy filtering and APPLICATIONS low noise. An external compensation pin gives the user flexibility in setting frequency compensation, • TFT Bias Supplies which makes possible the use of small, low ESR • Handheld Devices ceramic capacitors at the output. An external soft- • Portable Applications start pin allows the user to control the amount of inrush current during start up. The LM3224 is • GSM/CDMA Phones available in a low profile 8-lead VSSOP package. • Digital Cameras • White LED Flash/Torch Applications Typical Application Circuit 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 © 2004–2013, 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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