SC905

CDMA Cellular Phone www.DataSheet4U.com IC Power Management POWER MANAGEMENT Description The SC905 is a power management integrated circuit (PMIC) designed for the latest CDMA chip sets. The device provides four general purpose low dropout regulators (LDOs), and five low noise LDOs designed for analog circuits. The VMOT LDO can be used as a general purpose regulator or as an adjustable motor drive output that can supply up to 150mA to drive a vibrator motor. Each LDOs enable and output voltage are controlled via the I2C bus. An optional three-wire interface compatible with Semtech battery charger ICs is also controlled via the I2C bus. Initial power-on is achieved by activating either the ON or the HFPWR signal, and the PGOOD input is used by the microprocessor to latch power on or disable the device. The small and thermally efficient MLPQ-32 package and use of ceramic bypass capacitors, minimize the required PCB area making the SC905 ideal for space-conscious portable applications. SC905 Features 9 LDO Linear Regulators CORE: 1.35V - 2.90V @ 300mA ANA: 2.55V - 2.90V @ 200mA PAD: 1.35V - 2.90V @ 300mA RX: 2.55V - 2.90V @ 150mA TX: 2.55V - 2.90V @ 150mA TCXO: 2.55V - 2.90V @ 80mA PLL: 2.55V - 2.90V @ 80mA Camera: 1.35V - 2.90V @ 100mA Motor Drive: 1.35V - 2.90V @ 150mA I2C Interface for Microprocessor Control Less than 1μA Quiescent Current in Shutdown 65dB PSRR for Analog LDOs Over-Temperature Protection Power-On Control Optional Interface for Controlling Semtech Battery Char...