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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 ...