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多通道 IC (PMIC)

LP3921

現行

具整合 Boomer 音訊放大器的電池充電器管理和穩壓器單元

立即訂購
產品規格表

LP3921

現行
產品規格表 立即訂購

產品詳細資料

Regulated outputs (#) 7 Step-down DC/DC converter 0 Step-up DC/DC converter 0 LDO 7 Vin (min) (V) 3 Vin (max) (V) 5.5 Vout (min) (V) 1.5 Vout (max) (V) 3.3 Iout (max) (A) 0.3 Configurability Hardware configurable, Software configurable Features Comm control Rating Catalog Operating temperature range (°C) -40 to 85 Step-down DC/DC controller 0 Step-up DC/DC controller 0 Iq (typ) (mA) 2
Regulated outputs (#) 7 Step-down DC/DC converter 0 Step-up DC/DC converter 0 LDO 7 Vin (min) (V) 3 Vin (max) (V) 5.5 Vout (min) (V) 1.5 Vout (max) (V) 3.3 Iout (max) (A) 0.3 Configurability Hardware configurable, Software configurable Features Comm control Rating Catalog Operating temperature range (°C) -40 to 85 Step-down DC/DC controller 0 Step-up DC/DC controller 0 Iq (typ) (mA) 2
WQFN (RTV) 32 25 mm² 5 x 5
  • 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
    • Ability to Drive Capacitive Loads up to 100 pF
    • No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required
  • Space-Efficient 32-pin 5 x 5 mm WQFN Package

All trademarks are the property of their respective owners.

  • 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
    • Ability to Drive Capacitive Loads up to 100 pF
    • No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required
  • Space-Efficient 32-pin 5 x 5 mm WQFN Package

All trademarks are the property of their respective owners.

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.

The Boomer Audio Amplifier is capable of delivering 1.1 watts of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N). Boomer Audio Power Amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The Boomer Audio Amplifier does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption and part count is the primary requirement. The Boomer Audio Amplifier contains advanced pop & click circuitry which eliminates noises during turn-on and turn-off transitions.

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.

The Boomer Audio Amplifier is capable of delivering 1.1 watts of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N). Boomer Audio Power Amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The Boomer Audio Amplifier does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption and part count is the primary requirement. The Boomer Audio Amplifier contains advanced pop & click circuitry which eliminates noises during turn-on and turn-off transitions.
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* Data sheet Battery Charger Management & Regulator Unit w/Integrated Boomer Audio Amplifier datasheet (Rev. A) 2013年 5月 3日

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