MIC24046-H Datasheet, PDF (1/24 Pages) Micrel Semiconductor – Pin-Programmable, 4.5V − 19V, 5A Step-Down Converter

MIC24046-H
Pin-Programmable, 4.5V − 19V, 5A
Step-Down Converter
General Description
Micrel’s MIC24046-H is a pin-programmable, high-
efficiency, wide-input range, 5A, synchronous step-down
regulator. The MIC24046-H is perfectly suited for multiple-
voltage rail application environments typically found in
computing and telecommunication systems. It can be
programmed by pin strapping various parameters, such as
output voltage, switching frequency, and current-limit
values. The pin-selectable switching frequency, valley-
current-mode control technique, high-performance error
amplifier, and external compensation allow for the best
tradeoffs between high-efficiency and the smallest
possible solution size.
The MIC24046-H is pin-out compatible with its I²C-
programmable counterparts from the same family.
The MIC24046-H is available in a thermally-efficient,
space-saving, 20-pin 3mm × 3mm QFN package with an
operating junction temperature range of –40°C to +125°C.
Datasheets and support documentation are available on
Micrel’s website at: www.micrel.com.
Features
• 4.5V to 19V input voltage range
• 5A (maximum) output current
• High efficiency (>90%)
• Pin-selectable output voltages:
− 0.7V, 0.8V, 0.9V, 1.0V, 1.2V, 1.5V, 1.8V,
2.5V, and 3.3V
• ±1% output voltage accuracy
• Supports safe start-up with pre-biased output
• Pin-selectable current limit and switching frequency
• Internal soft-start and thermal shutdown protection
• Hiccup-mode short-circuit protection
• Available in a 20-pin 3mm × 3mm QFN package
• –40°C to +125°C junction temperature range
Applications
• Servers, data storage, routers, and base stations
• FPGAs, DSP, and low-voltage ASIC power
Typical Application
MIC24046-H 12VIN 5A DC-to-DC Converter
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
July 7, 2015
Revision 1.1.