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SC1485 Datasheet

Part Number SC1485
Manufacturers Semtech Corporation
Logo Semtech Corporation
Description Dual Synchronous Buck Pseudo Fixed Frequency Power Supply Controller
Datasheet SC1485 DatasheetSC1485 Datasheet (PDF)

www.DataSheet4U.com Dual Synchronous Buck Pseudo Fixed Frequency Power Supply Controller POWER MANAGEMENT Description The SC1485 is a dual output constant on synchronousbuck PWM controller intended for use in notebook computers and other battery operated portable devices. Features include high efficiency and a fast dynamic response with no minimum on time. The excellent transient response, means that SC1485 based solutions will require less output capacitance than competing fixed frequency conv.

  SC1485   SC1485






Part Number SC1486A
Manufacturers Semtech Corporation
Logo Semtech Corporation
Description Dual Synchronous Buck DDR and DDR2 Power Supply Controller
Datasheet SC1485 DatasheetSC1486A Datasheet (PDF)

www.DataSheet4U.com Dual Synchronous Buck DDR and DDR2 Power Supply Controller POWER MANAGEMENT Description The SC1486A is a dual output constant on-time synchronous buck PWM controller optimized for cost effective mobile DDR and DDR2 applications. Features include high efficiency, a fast dynamic response with no minimum on time, a REFIN input and a buffered REFOUT pin capable of sourcing 3mA. The excellent transient response means that SC1486A based solutions will require less output capacitan.

  SC1485   SC1485







Part Number SC1486
Manufacturers Semtech Corporation
Logo Semtech Corporation
Description Dual Synchronous Buck Pseudo Fixed Frequency DDR Power Supply Controller
Datasheet SC1485 DatasheetSC1486 Datasheet (PDF)

www.DataSheet4U.com Dual Synchronous Buck Pseudo Fixed Frequency DDR Power Supply Controller POWER MANAGEMENT Description The SC1486 is a dual output constant on synchronousbuck PWM controller optimized for cost effective mobile DDR applications. Features include high efficiency, a fast dynamic response with no minimum on time, a REFIN input and a buffered REFOUT pin capable of sourcing 3mA. The excellent transient response means that SC1486 based solutions will require less output capacitance .

  SC1485   SC1485







Dual Synchronous Buck Pseudo Fixed Frequency Power Supply Controller

www.DataSheet4U.com Dual Synchronous Buck Pseudo Fixed Frequency Power Supply Controller POWER MANAGEMENT Description The SC1485 is a dual output constant on synchronousbuck PWM controller intended for use in notebook computers and other battery operated portable devices. Features include high efficiency and a fast dynamic response with no minimum on time. The excellent transient response, means that SC1485 based solutions will require less output capacitance than competing fixed frequency converters. The frequency is constant until a step in load or line voltage occurs at which time the pulse density and frequency will increase or decrease to counter the change in output or input voltage. After the transient event, the controller frequency will return to steady state operation. At light loads, Power-Save Mode enables the SC1485 to skip PWM pulses for better efficiency. Each output voltage can be independently adjusted from 0.5V to VCCA. Two frequency setting resistors set the on-time for each buck controller. The frequency can thus be tailored to minimize crosstalk. The integrated gate drivers feature adaptive shoot-through protection and soft switching. Additional features include cycle-by-cycle current limit, digital soft-start, over-voltage and undervoltage protection, and a PGOOD output for each controller. SC1485 Features Constant on-time for fast dynamic response Programmable VOUT range = 0.5 – VCCA VIN Range = 1.8V – 25V DC current sense using low-side RDS(ON) sens.


2007-02-14 : 10BQ040PBF    2N6784    2N6851    2SA1576ART1    2SC5752    2SK2595    74LVT16646    7MBR25NF120    AC104QF    AK4319A   


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