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LP3923 - Cellular Phone Power Management

General Description

The LP3923 is a fully Integrated Power Management Unit (PMU) designed for CDMA cellular phones.

Key Features

  • 1.
  • 2 Integrated Li-Ion Battery Charger with Power FET, Thermal Regulation and 28V OVP.
  • Six Low-Noise LDOs, Two LILO LDOs.
  • 3 x 300 mA.
  • 4 x 150 mA.
  • 1 x 80 mA.
  • One High Efficiency Synchronous Magnetic Buck Regulators, IOUT 700 mA.
  • High Efficiency PFM Mode @low IOUT.
  • Auto Mode PFM/PWM Switch.
  • Low Inductance 2.2 µH @ 2 MHz Clock.
  • I2C-compatible Interface for Controlling LDO Outputs and Charger Operation.

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Other Datasheets by Texas Instruments

Part Number Description
LP3921 Battery Charger Management/Regulator
LP3905 Power Management
LP3906 Dual High-Current Step-Down DC/DC and Dual Linear Regulator
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LP3923 www.ti.com SNVS567B – APRIL 2010 – REVISED MAY 2013 LP3923 Cellular Phone Power Management Unit Check for Samples: LP3923 FEATURES 1 •2 Integrated Li-Ion Battery Charger with Power FET, Thermal Regulation and 28V OVP • Six Low-Noise LDOs, Two LILO LDOs – 3 x 300 mA – 4 x 150 mA – 1 x 80 mA • One High Efficiency Synchronous Magnetic Buck Regulators, IOUT 700 mA – High Efficiency PFM Mode @low IOUT – Auto Mode PFM/PWM Switch – Low Inductance 2.2 µH @ 2 MHz Clock • I2C-compatible Interface for Controlling LDO Outputs and Charger Operation • Thermal Shutdown with Early Warning Alarm • Under-Voltage Lockout • 30-bump 3.0 x 2.5 mm DSBGA Package APPLICATIONS • Cellular Handsets KEY SPECIFICATIONS • 50 mA to 1200 mA Charging Current • 3.0V to 5.5V Input Voltage Range • 135 mV typ.