Datasheet4U Logo Datasheet4U.com

LP3921 - Battery Charger Management/Regulator

Datasheet Summary

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.

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.

📥 Download Datasheet

Datasheet preview – LP3921

Datasheet Details

Part number LP3921
Manufacturer National Semiconductor
File Size 1.37 MB
Description Battery Charger Management/Regulator
Datasheet download datasheet LP3921 Datasheet
Additional preview pages of the LP3921 datasheet.

📁 Similar Datasheet

  • LP3921 - Battery Charger Management/Regulator (Texas Instruments)
  • LP3923 - Cellular Phone Power Management (Texas Instruments)
  • LP3905 - Power Management (Texas Instruments)
  • LP3906 - Dual High-Current Step-Down DC/DC and Dual Linear Regulator (Texas Instruments)
  • LP3907 - Dual 1-A and 600-mA Buck Converters and Dual 300-mA LDO (Texas Instruments)
  • LP3907-Q1 - Dual 1-A and 600-mA Buck Converters and Dual 300-mA LDO (Texas Instruments)
  • LP3910 - Power Management (Texas Instruments)
  • LP3913 - Power Management (Texas Instruments)
  • LP3918 - Battery Charge Management/Regulator (Texas Instruments)
  • LP3931 - Dual RGB LED Driver (Texas Instruments)
Other Datasheets by National Semiconductor
  • LP3923 - Cellular Phone Power Management
  • LP3927 - Cellular/PCS System Power Management
  • LP3928 - High Speed Bi-Directional Level Shifter and Ultra Low-Dropout CMOS Voltage Regulator
  • LP3929 - High Speed Bi-Directional Level Shifter and Ultra Low-Dropout CMOS Voltage Regulator
  • LP3905 - Power Management Unit For Low Power Handheld Applications
  • LP3906 - Dual High Current Step Down DC/DC and Dual Linear Regulator
  • LP3907 - Dual High-Current Step-Down DC/DC and Dual Linear Regulator
  • LP3910 - Power Management

Full PDF Text Transcription

Click to expand full text
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.
Published: |