APE1705 Datasheet, PDF (1/12 Pages) Advanced Power Electronics Corp. – 150KHz, 3A PWM Buck DC/DC Converter

Advanced Power
Electronics Corp.
150KHz, 3A PWM Buck DC/DC Converter
APE1705
™ GENERAL DESCRIPTION
The APE1705 series are monolithic IC designed for a step-down DC/DC converter,
and own the ability of driving a 3A load without additional transistor. It saves board
space. The external shutdown function can be controlled by logic level and then come
into standby mode. The internal compensation makes feedback control having good
line and load regulation without external design. Regarding protected function,
thermal shutdown is to prevent over temperature operating from damage, and current
limit is against over current operating of the output switch. If current limit function
occurs and V_FB is down below 0.5V, the switching frequency will be reduced. The
APE1705 series operates at a switching frequency of 150KHz thus allow smaller sized
filter components than what would be needed with lower frequency switching
regulators. Other features include a guaranteed Ô4% tolerance on output voltage
under specified input voltage and output load conditions, and Ô15% on the oscillator
frequency. The output version included fixed 3.3V, 5V, 12V, and an adjustable type.
The chips are available in a 5-Lead TO-263 and 5-Lead TO-220 package.
™ FEATURES
- Output voltage: 3.3V, 5V, 12V and adjustable output version.
- Adjustable version output voltage range, 1.23V to 38.5V.
- 150KHz Ô15% fixed switching frequency.
- Voltage mode non-synchronous PWM control.
- Thermal-shutdown and current-limit protection.
- ON/OFF shutdown control input.
- Short Circuit Protect (SCP).
- Operating voltage can be up to 40V.
- Output load current: 3A.
- 5-Lead TO-263 and TO-220 Pb-Free packages.
- Low power standby mode.
- Built-in switching transistor on chip.
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.
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