TPS40304A
www.ti.com SLUSA30 – FEBRUARY 2010 3-V TO 20-V INPUT SYNCHRONOUS BUCK CONTROLLER
Check for Samples: TPS40304A CONTENTS FEATURES 1 Input Voltage Range from 3 V to 20 V
Fixed 600-kHz Switching Frequency
High-and Low-Side FET RDS(on) Current
Sensing
Programmable Thermally Compensated OCP
Levels
Programmable Soft-Start
591-mV, 1% Reference Voltage
Voltage Feed-Forward Compensation
Supports Pre-Biased Output
Frequency Spread Spectrum
Thermal Shutdown Protection at 145В°C
10-Pin 3 mm Г— 3 mm SON Package with
Ground Connection to Thermal Pad Device Ratings 2 Electrical Characteristics 3 Device Information 8 Application Information 10 Additional References 13 X APPLICATIONS POL Modules
Printer
Digital TV
Telecom DESCRIPTION
The TPS40304A is a cost-optimized synchronous buck controller that operates from 3-V to 20-V input. The
controller implements a voltage-mode control architecture with input-voltage feed-forward compensation that
responds instantly to input voltage change. The switching frequency is fixed at 600 kHz.
Frequency Spread Spectrum feature adds dither to the switching frequency, significantly reducing the peak EMI …
