LM2703集成电路（IC）的LED驱动器规格书PDF中文资料

LM2703属于集成电路（IC）的LED驱动器。由美国德州仪器公司制造生产的LM2703LED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。

1FEATURES

2• 350mA, 0.7Ω, Internal Switch

• Uses Small Surface Mount Components

• 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.