General Description

The MIC2829 is a highly integrated Power Management Integrated Circuit (PMIC) designed for 3G/4G (HEDGE/LTE and WiMAX) USB wireless applications. It is a complete power management solution which provides power to processors, dual standard RF (such as HEDGE/LTE or WiMAX) transceivers and power amplifiers, memory, USB-PHY associated I/O interfaces and other system requirements.

特性 Features

? Input voltage range: 2.7V to 5.5V

Six DC Step-Down Regulators

? Four HyperLight LoadTM step-down regulators

- Low quiescent current – typical 40μA

- DC1: 4MHz / 1000mA

- DC2: 4MHz / 300mA (with voltage scaling)

- DC3: 2.5MHz / 600mA

- DC4: 4MHz / 600mA (with adjustable delay POR)

? Two PWM step-down regulators

- DC5 and DC6: Fixed 2MHz / 800mA

- 100 duty cycle

Eleven Low Dropout Regulators (LDOs)

? Five general purpose 200mA LDOs (LDO1-4, LDO11)

- LDO3: 38mV dropout at 100mA

- LDO2 and LDO4: 80mV dropout at 100mA

- LDO1 and LDO11: 115mV dropout at 100mA

- Output accuracy ± 3

- 40μA ground current

? Six high performance 200mA LNRs (LDO5-10)

- High PSRR 70dB at 1kHz

- Low noise: 20μVRMS

- 40mV dropout at 100mA

- Output accuracy ± 3

- 20μA ground current

? SIM card level translator

? SIM card power supply (50mA)

? Thermal shutdown and current limit protection

? UVLO – under voltage lockout protection

? 76-pin 5.5mm x 5.5mm LGA package

? 85-pin 5.5mm x 5.5mm FBGA package

? –40°C to +125°C operating junction temperature range

Applications

? 4G LTE USB modems

? 3G/4G (HEDGE/LTE) wireless chipsets

? WiMAX modems

? Express card modems

? UMPC/notebook PC wireless data communications

? Portable applications