APE1501 Datasheet, PDF (1/10 Pages) Advanced Power Electronics Corp. – 1.5MHz, 600mA Synchronous Step-Down Converter

Advanced Power
Electronics Corp.
Preliminary
APE1501
1.5MHz, 600mA Synchronous Step-Down Converter
™ FEATURES
- 2.5V to 5.5V Input Voltage Range
- High Efficiency: Up to 96%
- 1.5MHz Constant Frequency Operation
- 600mA Output Current at VCC=3V
- No Schottky Diode Required
- Low Dropout Operation: 100% Duty Cycle
- 0.6V Reference Allows Low Output Voltages
- Current Mode Operation for Excellent Line and
Load Transient Response
- Current limit, Enable function
- Short Circuit Protect (SCP)
- Low Quiescent Current: 300µA
- ≤ 1µA Shutdown Current
- 5-pin, SOT-23 Pb-Free package
™ GENERAL DESCRIPTION
The APE1501 is a high efficiency monolithic synchronous buck regulator using a
1.5MHz constant frequency, current mode architecture. The device is available in an
adjustable version. Supply current with no load is 300µA and drops to <1µA in shutdown.
The 2.5V to 5.5V input voltage range makes the APE1501 ideally suited for single Li-Ion
battery-powered applications. 100% duty cycle provides low dropout operation,
Switching frequency is internally set at 1.5MHz, allowing the use of small surface
mount inductors and capacitors. The internal synchronous switch increases efficiency
and eliminates the need for an external Schottky diode. Low output voltages are easily
supported with the 0.6V feedback reference voltage. The APE1501 can supply 600mA of
load current at VCC=3V. The APE1501 is available in a low profile 5-pin, SOT package.
This datasheet contains new product information. Advanced Power Electronics Corp. reserves the rights to modify the product specification without notice. No liability is
assumed as a result of the use of this product. No rights under any patent accompany the sale of the product.
200704071pre-1/9