LP3921SQE/NOPB
ActiveBATTERY CHARGER MANAGEMENT AND REGULATOR UNIT WITH INTEGRATED BOOMER AUDIO AMPLIFIER
LP3921SQE/NOPB
ActiveBATTERY CHARGER MANAGEMENT AND REGULATOR UNIT WITH INTEGRATED BOOMER AUDIO AMPLIFIER
Description
General part information
LP3921 Series
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 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.
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.
Technical Specifications
Parameters and characteristics for this part
| Specification | LP3921SQE/NOPB |
|---|---|
| Battery Chemistry | Lithium Ion |
| Battery Pack Voltage | 4.2 V |
| Charge Current - Max | 950 mA |
| Current - Charging | Constant, Programmable |
| Fault Protection | Reverse Current, Over Temperature |
| Interface | I2C |
| Mounting Type | Surface Mount |
| Number of Cells | 1 |
| Operating Temperature (Max) | 85 °C |
| Operating Temperature (Min) | -40 °C |
| Package / Case | 32-WFQFN Exposed Pad |
| Package Length | 5 mm |
| Package Name | 32-WQFN |
| Package Width | 5 mm |
| Voltage - Supply (Max) | 5.5 V |
Pricing
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CAD
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Documents
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