TPS40222
www.ti.com SLUS642A – OCTOBER 2005 – REVISED JANUARY 2006 1.6-A, 1.25-MHz BUCK CONVERTER IN A 3 mm × 3 mm SON PACKAGE
FEATURES APPLICATIONS Input Voltage Range 4.5 VDC to 8 VDC
Output Voltage (0.8 V to 90% VIN)
0 A to 1.6 A Current Capability
Fixed 1.25-MHz Switching Frequency
Reference 0.8 V В±1%
Internal 250 mΩ N-Channel MOSFET Switch
Current Mode Control with Internal Slope
Compensation
Internal Soft-Start
Internal Loop Compensation
Short Circuit Protection
Thermal Shutdown
High Efficiency Up to 92%
Small 3 mm Г— 3 mm SON Package Disk Drives
Set Top Box
Point of Load Power
ASIC Power Supplies DESCRIPTION
The TPS40222 is a fixed-frequency, current-mode,
non-synchronous buck converter optimized for
applications powered by a 5-V distributed source.
With internally determined operating frequency, …
