Power Management IC for the SkyBlue™ System

The SKY87020-13 is a high-efficiency RF front-end power management IC for APT RF power amplifier (PA) applications in portable battery powered devices. This IC includes a high-efficiency DC-DC voltage converter with a 4.5 V reference supply to provide a user-programmable RF PA APT supply for a 2.5 V to 5.5 V input range.

The SKY87020-13 also provides an additional 4.5 V bias supply for RF PA operation. This bias voltage output can supply load currents up to 3 mA and is available whenever the device is enabled. When the device is disabled, the 4.5 V bias supply is shut down.

The SKY87020-13 is available in a 16-pin, 2.005 mm  2.005 mm Chip Scale Package (CSP).


    • Input voltage range: 2.5 V to 5.5 V
    • High-efficiency converter:
    • Output voltage range optimized for SkyBlue™ PA operation
    • 4.5 V, 3 mA PA bias supply output
    • Over-temperature and short-circuit protection
    • Small footprint CSP (16-ball, 2.005 mm x 2.005 mm) package (MSL1, 260 °C per JEDEC J-STD-020)

Images & Diagrams


    • Min. VIN (V)
    • 2.5
    • Max. VIN (V)
    • 5.5
    • Min. VOUT (V)
    • 2.5
    • Max. VOUT (V)
    • VccPA
    • IOUT (mA)
    • TBD
    • fOSC (kHz)
    • TBD
    • Typ. IQ (μA)
    • TBD
    • Package
    • CSP, 16-ball
    • Package (mm)
    • 2.005 x 2.005 x 0.695