LP3921SQE

The LP3921SQE is a fully integrated charger and multi-regulator unit with a fully differential boomer audio power amplifier designed for CDMA cellular phones. It has a highspeed serial interface which allows for the integration and control of a Li-lon battery charger, 7 low-noise low-dropout voltage regulators and a Boomer audio amplifier.

The features of LP3921SQE can be summarized as:(1)Charger:DC adapter or USB input,Thermally regulated Charge Current,Under Voltage Lockout,50 to 950 mA Programmable Charge Current; (2)3.0V to 5.5V Input Voltage Range; (3)Thermal shutdown; (4)I2C-compatible Interface for controlling Charger, LDO outputs and enabling Audio output; (5)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; (6)Audio:Fully Differential Amplification,Ability to drive capacitive loads up to 100 pF,No output coupling capacitors, snubber networks or bootstrap capacitors required; (7)Space- Efficient 32-pin 5 x 5 mm LLP package.

The absolute maximum ratings of LP3921SQE are:(1)CHG-IN:-0.3V to +6.5V; (2)VBATT =VIN1/2, BATT, VDD, HF_PWR:-0.3V to +6.0V; (3)All other Inputs:-0.3V to VBATT+0.3V,max 6.0V; (4)Junction Temperature (TJ-MAX):150°C; (5)Storage Temperature:-40°C to +150°C; (6)Max Continuous Power Dissipation(PD-MAX):Internally Limited; (7)ESD:BATT, VIN1, VIN2, VDD,HF_PWR, CHG_IN, PWR_ON..8 kV HBM,All other pins..2 kV HBM.

If you want to know more information such as the electrical characteristics about the LP3921SQE, please download the datasheet in www.seekic.com or www.chinaicmart.com .