SC1485: Dual Synchronous Buck Pseudo-Fixed-Frequency Power-Supply Controller | Semtech

The SC1485 is a dual output constant-on synchronous buck 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 switching 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. By Semtech Corporation
SC1485 's PackagesSC1485 's pdf datasheet
SC1485ITSTR TSSOP
SC1485ITSTRT TSSOP

SC1485 pdf datasheet download


SC1485 Pinout, Pinouts
SC1485 pinout,Pin out
This is one package pinout of SC1485,If you need more pinouts please download SC1485's pdf datasheet.

SC1485 Application circuits
SC1485 circuits
This is one application circuit of SC1485,If you need more circuits,please download SC1485's pdf datasheet.


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