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LM2751SD-B Fiches technique(PDF) 1 Page - Texas Instruments |
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LM2751SD-B Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 19 page 2.7 3.0 3.3 3.6 3.9 4.2 40 50 60 70 80 90 100 INPUT VOLTAGE (V) Typical 2x Only Pump VOUT = 4.5V LM2751 2x, 1.5x Pump VOUT = 4.5V VOUT = 5.0V VOUT = 5.0V LM2751 VIN C2+ C2- 2.2 µF 1 µF VOUT 2.2 µF C1+ C1- 1 µF Capacitors: 1 µF - TDK C1608X7R1A105K 2.2 µF - TDK C2012X5R1A225K VIN = 2.8V - 5.5V 3 2 9 10 7 8 1 EN 6 GND VOUT = 4.5V, or 5.0V CS0 4 CS1 5 D1 DX R R COUT CIN C2 C1 LM2751 www.ti.com SNVS299B – APRIL 2005 – REVISED MAY 2013 LM2751 Regulated 2X, 1.5X Switched Capacitor White LED Driver Check for Samples: LM2751 1 FEATURES APPLICATIONS 2 • Regulated Output Options: 4.5V, 5.0V • White LED Display Backlights • Output Voltage Regulated Within 3% • White LED Keypad Backlights • Peak Efficiency Over 90% • General Purpose 2×, 1.5× Regulated Charge Pump • 150mA (4.5V) or 80mA (5.0V) Output Current Capability DESCRIPTION • Input Voltage Range: 2.8V to 5.5V The LM2751 is a constant frequency switched • Low Input and Output Voltage Ripple capacitor charge pump with regulated output voltage • <1µA Typical Shutdown Current options of 4.5V, and 5.0V. Over the input voltage range of 2.8V to 5.5V the LM2751 provides up to • Small Solution Size - NO INDUCTOR 150mA of output current and requires only four low- • Programmable 725kHz, 300kHz, 37kHz, or cost ceramic capacitors. 9.5kHz Switching Frequencies • 10-pin SON No-Pullback Package: 3mm × 3mm × 0.8mm Typical Application Circuit LM2751 2x/1.5x Efficiency vs. 2x Charge Pump Efficiency 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 © 2005–2013, 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. |
Numéro de pièce similaire - LM2751SD-B |
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Description similaire - LM2751SD-B |
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