LP3921
www.ti.com SNVS580A – AUGUST 2008 – REVISED MAY 2013 LP3921 Battery Charger Management and Regulator Unit with Integrated Boomer™ Audio
Amplifier
Check for Samples: LP3921 FEATURES DESCRIPTION The LP3921 is a fully integrated charger and multiregulator unit with a fully differential Boomer audio
power amplifier designed for CDMA cellular phones.
The LP3921 has a high-speed 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. 1 23 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 …
