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LP3918

NOT RECOMMENDED FOR NEW DESIGNS

Battery Charge Management and Regulator Unit

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Data sheet
LP3918 is not recommended for new designs
This product continues to be available for existing customers. New designs should consider an alternate product.
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Similar functionality to the compared device
LP3921 ACTIVE Battery Charger Management and Regulator Unit with Integrated Boomer Audio Amplifier PMIC for CDMA phone handsets and other personal electronic applications with fully integrated charger and fully differential audio power amplifier.

LP3918

NOT RECOMMENDED FOR NEW DESIGNS
Data sheet Order now

Product details

Vin (min) (V) 3 Vin (max) (V) 5.5 Vout (min) (V) 1.5 Vout (max) (V) 3.3 Iout (max) (A) 0.3 Features Comm control Rating Catalog Operating temperature range (°C) -40 to 125
Vin (min) (V) 3 Vin (max) (V) 5.5 Vout (min) (V) 1.5 Vout (max) (V) 3.3 Iout (max) (A) 0.3 Features Comm control Rating Catalog Operating temperature range (°C) -40 to 125
DSBGA (YZR) 25 7.5625 mm² 2.75 x 2.75
  • Fully Integrated Li-Ion Battery Charger with Thermal Regulation
  • USB Charge Mode
  • 7 Low Noise LDO’s
    • 2 x 300 mA
    • 3 x 150 mA
    • 2 x 80 mA
  • I2C Compatible Interface for Controlling LDO Outputs and Charger Operation
  • Thermal Shutdown
  • Under Voltage Lockout
  • 25-Bump Thin DSBGA Package 2.5 x 2.5 mm
  • Options Available on Request, Please Contact Sales Office for Further Information;
    • Level Detect on HF_PWR & PWR_ON
    • LDO Charging Mode
    • Custom Default Settings on Charger, and LDO O/P's.

Key Specifications

  • 50mA to 950mA Programmable Charge Current
  • 3.0V to 5.5V Input Voltage Range
  • 200mV Typ. Dropout Voltage on 300 mA LDO’s
  • 2% (Typ) Output Voltage Accuracy on LDO’s

All trademarks are the property of their respective owners.

  • Fully Integrated Li-Ion Battery Charger with Thermal Regulation
  • USB Charge Mode
  • 7 Low Noise LDO’s
    • 2 x 300 mA
    • 3 x 150 mA
    • 2 x 80 mA
  • I2C Compatible Interface for Controlling LDO Outputs and Charger Operation
  • Thermal Shutdown
  • Under Voltage Lockout
  • 25-Bump Thin DSBGA Package 2.5 x 2.5 mm
  • Options Available on Request, Please Contact Sales Office for Further Information;
    • Level Detect on HF_PWR & PWR_ON
    • LDO Charging Mode
    • Custom Default Settings on Charger, and LDO O/P's.

Key Specifications

  • 50mA to 950mA Programmable Charge Current
  • 3.0V to 5.5V Input Voltage Range
  • 200mV Typ. Dropout Voltage on 300 mA LDO’s
  • 2% (Typ) Output Voltage Accuracy on LDO’s

All trademarks are the property of their respective owners.

The LP3918 is a fully integrated charger and multi-regulator unit designed for CDMA cellular phones. The LP3918 contains a Li-Ion battery charger, 7 low noise low dropout (LDO) voltage regulators and a high-speed serial interface to program on/off conditions and output voltages of individual regulators, and also to read status information from the PMU.

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. Charging is thermally regulated to obtain the most efficient charging rate for a given ambient temperature.

LDO regulators provide high PSRR and low noise ideally suited for supplying power to both analog and digital loads.

The LP3918 is a fully integrated charger and multi-regulator unit designed for CDMA cellular phones. The LP3918 contains a Li-Ion battery charger, 7 low noise low dropout (LDO) voltage regulators and a high-speed serial interface to program on/off conditions and output voltages of individual regulators, and also to read status information from the PMU.

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. Charging is thermally regulated to obtain the most efficient charging rate for a given ambient temperature.

LDO regulators provide high PSRR and low noise ideally suited for supplying power to both analog and digital loads.
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* Data sheet LP3918 Battery Charge Management and Regulator Unit datasheet (Rev. D) 03 May 2013

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