ACE721E Datasheet, PDF (1/10 Pages) ACE Technology Co., LTD. – 1A, 1.5MHz Step-Down Converter

ACE721E
1A, 1.5MHz Step-Down Converter
Description
The ACE721E is a high-efficiency, DC-to-DC step-down switching regulator, capable of delivering up to
1A of output current. The devices operate from an input voltage range of 2.6V to 5.5V and provide output
voltages from 0.6V to VIN, making the ACE721E ideal for low voltage power conversions. Running at a
fixed frequency of 1.5MHz allows the use of small inductance value and low DCR inductors, thereby
achieving higher efficiencies. Other external components, such as ceramic input and output caps, can
also be small due to higher switching frequency, while maintaining exceptional low noise output voltages.
Built-in EMI reduction circuitry makes this converter ideal power supply for RF applications. Internal
soft-start control circuitry reduces inrush current. Short-circuit and thermal-overload protection improves
design reliability.
Features
• Up to 96% Efficiency
• Up to 1A Max Output Current
• 1.5MHz Frequency
• Light Load operation
• Internal Compensation and Soft-Start
• Tiny SOT-23-5 DFN2x2-6 Package
Application
• MIDs, Tablet PC
• Set Top Boxes
• USB ports/Hubs
• Hot Swaps
• Cellphones
• Blue tooth.
Absolute Maximum Rating
Parameter
Value
IN, SW, FB, EN Voltage
-0.3V~6.5V
SW to ground current
Internally limited
Maximum Power Dissipation
400mW
Operating Temperature Range
-40°C~85°C
Storage Temperature Range
-55°C~150°C
SOT23-5
Thermal Resistance
DFN2x2x6L
400mW
606mW
Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability.
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