DESCRIPTION

SiP12401 is a boost controller IC for double cell NiMH or Alkaline battery and Li Ion battery, which can drive white LEDs connected in series to provide backlight in hand-held devices. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. For best efficiency performance, the SiP12401 is designed to operate in PWM mode with 600 kHz switching. The voltage-mode PWM design is internally compensated, reducing the external parts count. It accepts input voltages from 1.8 V to 5.0 V. The LED current can be adjusted externally for its brightness control. SiP12401 features low shutdown current of under 1 µA.

FEATURES

• Voltage Mode Control with Internal Frequency Compensation

• 1.8 V to 5.0 V Input Voltage Range

• PWM Control with 600 kHz Fixed Switching Frequency

• Analog Control of LED Intensity

• Regulated Output Current

• Integrated UVLO and Soft-Start

• Logic Controlled Shutdown (< 1 µA)

• High Efficiency: Typical 80

• PowerPAK® MLP33-6 Package

APPLICATIONS

• White LED Backlighting

• LCD Bias Supplies

• Handheld Devices

• Digital Cameras

• Portable Applications

SIP12401DMP-T1-E3属于集成电路（IC） > LED 驱动器。威世科技半导体制造生产的SIP12401DMP-T1-E3LED 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。