LM2703 Datasheet | Texas Instruments

.ti. SNVS172F - FEBRUARY 2002 - REVISED MAY 2013 LM2703 Micropower Step-Up DC/DC Converter with 350m A Peak Current Limit Check for Samples: LM2703 Features - 2 350m A, 0.7Ω, Internal Switch - Uses Small Surface Mount ponents - Adjustable Output Voltage up to 21V - 2.2V to 7V Input Range - Input Undervoltage Lockout - 0.01µA Shutdown Current - Small 5-Lead SOT-23 Package APPLICATIONS - LCD Bias Supplies - White LED Back-Lighting - Handheld Devices - Digital Cameras - Portable Applications DESCRIPTION The LM2703 is a micropower step-up DC/DC in a small 5-lead SOT-23 package. A current limited, fixed off-time control scheme conserves operating current resulting in high efficiency over a wide range of load conditions. The 22V switch allows for output voltages as high as 21V. The low 400ns off-time permits the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space-conscious portable applications. The LM2703 is ideal for LCD panels requiring low current and high efficiency as well as white LED applications for cellular phone back-lighting. The LM2703 can drive up to 4 white LEDs from a single Li-Ion battery. Typical Application Circuit VIN = Li-Ion L 10 PH 20V 15 m A CIN 4.7 PF VIN SW SHDN GND...