SC453 Datasheet PDF - Semtech Corporation

Description
The SC453 IC is a single chip high-performance Hysteretic PWM controller. With its integrated SmartDriver™, it pow ers advanced graphics and core processors. It provides sleep mode and boot voltage support. Automatic "power save" is present to prevent negative current flow in the
low-side FET during light loading conditions saving even more power. The high side driver initially turns on with a weak drive to reduce ringing, EMI, and capacitive turn-on of the low side.

FEATUREs
High Speed Hysteretic Controller
Single Phase Operation
Selectable Analog or VID Controlled Sleep Setting
6 Bit VID programmable Output
Integrated Drivers with Soft-High Side Turn-On
Programmable Soft-Start
Programmable Boot Voltage
Programmable Sleep Voltage with Sleep Mode
Under-Voltage Lockout on VCCA
Over-voltage Protection on CORE
Current Limit Protection on CORE
Thermal Protection
Power Good Flag with Blanking During V_CORE Changes
Automatic Power Save at Light Load  TSSOP-28 Package

APPLICATIONs
Low Power Notebook and Laptop Computers
Embedded Applications