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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SC905 датащи(PDF) 1 Page - Semtech Corporation |
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SC905 датащи(HTML) 1 Page - Semtech Corporation |
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1 / 21 page  www.semtech.com 1 POWER MANAGEMENT SC905 CDMA Cellular Phone Power Management IC June 7, 2006 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 cir- cuits. 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. 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 Chargers Small 5mm x 5mm 32-Pin QFN Package CDMA Cellular Handsets Palmtop/Laptop Computers Battery Powered Equipment 10μF VBAT MOTOR 0.1μF ON/OFF 1μF Keypad Baseband Processor Audio Processing Digital Interface Camera Module TCXO + Synthesiser PLL Transmitter Section PA Receiver Section LNA SC905 VBAT IN1 IN2 IN3 IN4 IN5 IN6 DVIN VCORE VPAD VANA VTCXO VTX VRX VCAM VPLL VPSEL VCSEL DGND CPB CHRGB FAULTB AGND BP VMOT RESB PWRON SCL PGOOD HFPWR ON SDA BATTERY Handsfree Option Battery Charger Circuit 1μF 1μF 1μF 1μF 1μF 1μF 1μF Features Typical Application Circuit Applications |
Аналогичный номер детали - SC905 |
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Аналогичное описание - SC905 |
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