MAX8982X:Power-Management ICs for ICERA E400 Platform

Deliver Complete Power Management for LTE/WCDMA/GSM/GPRS/EDGE Data Card Based on the New ICERA Platform (E400/E450)

The MAX8982A/MAX8982P/MAX8982X are complete power-management ICs for the latest LTE/WCDMA/GSM/GPRS/EDGE data card based on the new ICERA platform (E400). The MAX8982A operates from a 4.1V to 5.5V supply and contains four efficient step-down converters, nine low dropout linear regulators (LDOs) to power all RF and baseband circuitry, three current regulators with programmable current up to 24mA and embedded flash timers, and an I²C serial interface to program individual regulator output voltages as well as on/off control for flexibility. The linear regulators provide greater than 60dB PSRR, less than 45µV of output noise, and minimal cross coupling noise between LDOs. The MAX8982X/MAX8982P operates from a 2.9V to 5.5V supply. The MAX8982X has the same features as the MAX8982A, except it does not have BUCK3, BUCK4, and LDO8. The MAX8982P has the same features as the MAX8982A. All buck converters and LDOs are enabled/disabled by either I²C or PWR_REQ control signal after power-up. This feature provides more flexibility in system design.

Key Features
  • 4 High-Efficiency Buck Converters
    • 0.9V at 1.2A (1.3 for MAX8982P) for CORE with DVS Function (0.6V to 1.2V in 25mV Steps) and Slew Rate Control
    • 1.8V at 600mA for System IO
    • 3.2V at 600mA for All LDO Inputs (2.9V to 3.65V in 50mV Steps) (MAX8982A/MAX8982P Only)
    • 3.4V at 1.8A for GSM/WCDMA PA (3.0V to 3.75V in 50mV Steps) (MAX8982A/MAX8982P Only)
  • 9 LDO Linear Regulators
    • 2.7V at 300mA on LDO1 for RF Transceiver
    • 1.8V at 150mA on LDO2 for RF Transceiver
    • 2.8V at 150mA on LDO3 for Analogue BB
    • 0.9V at 50mA on LDO4 for BB PLL with the Separate Input for a Higher Efficiency
    • 3.0V at 150mA on LDO5 for SD Card
    • 2.7V at 150mA on LDO6 for TCXO
    • 1.8V or 3.0V at 150mA on LDO7 for SIM
    • 3.0V at 150mA on LDO8 for USB with the Separate Input (MAX8982A/MAX8982P Only)
    • 0.9V at 50mA on LDO9 for BB with the Separate Input for a Higher Efficiency
  • 32 Programmable Voltage Options and External Input on BUCK1 (0.9V Default) for DVS
  • 16 Programmable Voltage Options for BUCK3 (MAX8982A/MAX8982P Only)
  • 16 Programmable Voltage Options on BUCK4 (MAX8982A/MAX8982P Only)
  • Programmable Voltage Options for All LDOs (LDO8 for MAX8982A/MAX8982P Only)
  • BUCK2, BUCK3 (MAX8982A/MAX8982P Only), LDO3, and Internal 32kHz Clock Default On at Initial Startup
  • All Buck Converters and LDOs are Enabled by Either I²C or Power Request Control (PWR_REQ) After Power-Up
  • 3 Current Regulators with 8 Dimming Current Options Up to 24mA with Embedded Flash Timer
  • GSM, GPRS, EDGE, WCDMA, and LTE Data Card with New ICERA Platform (E400)
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MAX8982A-MAX8982X Data SheetMAX8982A-MAX8982X.pdf
Part NumberPrimary TopologyTarget Processor or Spec.Monitor/Control FeaturesDC-DC/Power FeaturesLCD/LED/Flash/CCD FeaturesInterface TypeVIN
Oper. Freq.
MAX8982AStep-DownICERA E400/E450Dynamic V Adj.
Reset Output
Serial Interface
Current Limit
Fixed Freq./PWM
Internal Switch
Soft Start
Sync. Rectifier
White LEDI2C4. Data Sheet
MAX8982XICERA E400/E450I2C2.90.6See Data Sheet
2.90.9See Data Sheet
MAX8982A-MAX8982X.pdf MAX8982X