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Wireless Data Card PMIC 10-Channel DC-DC Converter

The AAT2630 contains two fully integrated, step-down converters, eight low-dropout (LDO) regulators, a 1.25 V voltage reference, a 19.2 MHz clock buffer, a 32 kHz frequency output, and three LED drivers in a 3 mm x 3 mm Wafer Level Chip Scale Package (WLCSP), making it ideal for wireless data cards or modules and on-board modems.

The two step-down converters are synchronous with internal compensation. Switching at 1.92 MHz, they operate 180° out of phase to minimize the number and size of the external components and to provide efficiencies higher than 90%. The eight LDOs are high PSRR type, requiring only a small output ceramic capacitor for stability.

Power-on reset and automatic power-up sequence, which are common in system architectures involving a processor, are defined for the supplies. The AAT2630 also includes over-current and over-temperature protection.

The AAT2630 is available in a 49-bump, 3 mm x 3 mm WLCSP package.

Features

  • VIN range: 3.0 V to 5.5 V
  • Two 1.92 MHz synchronous step-down converters:
    • 180° out-of-phase operation
    • Buck1: 1.375 V, 500 mA output
    • Buck2: 2.1 V, 500 mA output
    • Light load, low noise switching mode
  • Eight LDO regulators:
    • Two with 300 mA output:
      • LDO1 for MSME: 1.8 V
      • LDO3 for MSMA: 2.6 V
    • Three with 150 mA output:
      • LDO2 for MSMP: 2.6 V
      • LDO4 for MMC: 3.0 V
      • LDO8 for RFRX: 2.75 V
    • Three with 50mA output:
      • LDO5 for RUIM: 1.8 V/3.0 V
      • LDO6 for TCXO: 2.85 V
      • LDO7 for USB: 3.1 V
    • High PSRR (70 dB @1 KHz)
  • Over-current and over-temperature protection
  • Power-on reset
  • Power up with defined sequence
  • 1.25 V voltage reference
  • 19.2 MHz clock buffer
  • 32.7645 kHz frequency output
  • WLCSP (49-bump, 3 mm x 3 mm) package (MSL1, 260 ºC per JEDEC J-STD-020)
Data Sheets AAT2630: Wireless Data Card PMIC 10-Channel DC-DC Converter AAT2630_203169A.pdf (1479 KB)
ProductName : AAT2630
Battery Charger Type : N/A
Number of Step-up Switching Regulators : 0
Number of Step-down Switching Regulators : 2
Number of LDO Regulators : 8
Min. VIN (V) : 3.0
Max. Regulator VIN (V) : 5.5
Max Charger VIN (V) : N/A
Max Charger Protected VIN (V) : N/A
Max. Charge Current (mA) : N/A
Max. Single/ Channel Output Current (mA) : 500
Min. Single/ Ch Output Voltage (V) : 1.375
Max Step-up Output Voltage (V) : N/A
Output Voltage Control : Fixed
Operating Frequency (kHz) : 1920
Package (mm) : WLCSP 49B, 3.0 x 3.0 x 0.65
Product Information:
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