www.
ti.
com TPS40222 SLUS642A – OCTOBER 2005 – REVISED JANUARY 2006 1.
6-A, 1.
25-MHz BUCK CONVERTER IN A 3 mm × 3 mm SON PACKAGE FEATURES • 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 ±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 × 3 mm SON Package η − Efficiency − % 100 VIN = 5 V 95 TYPICAL EFFICIENCY vs LOAD CURRENT 90 85 VOUT = 3.
3 V 80 75 70 VOUT = 1.
25 V 65 APPLICATIONS ...

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