Datasheet Summary
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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 pensation
- Internal Soft-Start
- Internal Loop pensation
- Short Circuit Protection
- Thermal Shutdown
- High Efficiency Up to 92%
- Small 3 mm × 3 mm SON Package
η
- Efficiency
- %
100 VIN = 5 V
TYPICAL EFFICIENCY vs
LOAD CURRENT
VOUT = 3.3 V
75 70
VOUT = 1.25 V 65
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