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LP3921 - Battery Charger Management/Regulator

General Description

The LP3921 is a fully integrated charger and multi-regulator unit with a fully differential Boomer audio power amplifier designed for CDMA cellular phones.

Key Features

  • Charger.
  • DC adapter or USB input.
  • Thermally regulated Charge Current.
  • Under Voltage Lockout.
  • 50 to 950 mA Programmable Charge Current 3.0V to 5.5V Input Voltage Range Thermal shutdown I2C-compatible Interface for controlling Charger, LDO outputs and enabling Audio output LDO's 7 Low-Noise LDO’s.
  • 2 x 300 mA.
  • 3 x 150 mA.
  • 2 x 80 mA 2% (typ. ) Output Voltage Accuracy on LDO's Audio.
  • Fully Differential Amplification.

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www.DataSheet.co.kr LP3921 Battery Charger Management and Regulator Unit with Integrated Boomer Audio Amplifier August 26, 2008 LP3921 Battery Charger Management and Regulator Unit with Integrated Boomer® Audio Amplifier General Description The LP3921 is a fully integrated charger and multi-regulator unit with a fully differential Boomer audio power amplifier designed for CDMA cellular phones. The LP3921 has a highspeed serial interface which allows for the integration and control of a Li-Ion battery charger, 7 low-noise low-dropout (LDO) voltage regulators and a Boomer audio amplifier. The Li-Ion charger integrates a power FET, reverse current blocking diode, sense resistor with current monitor output, and requires only a few external components.