MIC45212-1/-2 26V/14A DC-to-DC Power Module General Description Features Micrels MIC45212 is a synchronous step-down regulator No compensation required module, featuring a unique adaptive ON-time control Up to 14A output current architecture. The module incorporates a DC-to-DC >93% peak efficiency controller, power MOSFETs, bootstrap diode, bootstrap Output voltage: 0.8V to 5.5V with 1% accuracy capacitor, and an inductor in a single package simplifying the design and layout process for the end user. Adjustable switching frequency from 200kHz to 600kHz Enable input and open-drain power good output This highly-integrated solution expedites system design and improves product time-to-market. The internal Hyper Speed Control (MIC45212-2) architecture enables fast transient response MOSFETs and inductor are optimized to achieve high efficiency at a low output voltage. The fully-optimized HyperLight Load (MIC45212-1) improves light load design can deliver up to 14A current under a wide input efficiency voltage range of 4.5V to 26V, without requiring additional Supports safe startup into pre-biased output cooling. CISPR22, Class B compliant The MIC45212-1 uses Micrels HyperLight Load (HLL) 40 C to +125 C junction temperature range while the MIC45212-2 uses Micrels Hyper Speed Thermal-shutdown protection Control architecture, which enables ultra-fast load Short-circuit protection with hiccup mode transient response, allowing for a reduction of output capacitance. The MIC45212 offers 1% output accuracy Adjustable current limit that can be adjusted from 0.8V to 5.5V with two external Available in 64-pin 12mm 12mm 4mm QFN package resistors. Additional features include thermal shutdown protection, input undervoltage lockout, adjustable current Applications limit, and short circuit protection. The MIC45212 allows for High power density point-of-load conversion safe start-up into a pre-biased output. Servers, routers, networking, and base stations Datasheet and other support documentation can be found FPGAs, DSP, and low-voltage ASIC power supplies on Micrels web site at: www.micrel.com. Industrial and medical equipment Typical Application Efficiency vs. Output Current (MIC45212-1) 100 5.0V OUT 90 3.3V OUT 80 2.5V OUT 1.8V OUT 70 1.5V OUT 60 1.2V OUT 50 1.0V OUT 40 0.8V OUT 30 20 f = 600kHz SW 10 0 2 4 6 8 10 12 14 16 18 20 OUTPUT CURRENT (A) Hyper Speed Control is a trademark of Micrel, Inc. HyperLight Load is a registered trademark of Micrel, Inc. Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC45212 (1) Ordering Information Switching Junction Lead Part Number Features Package Frequency Temperature Range Finish 64-pin MIC45212-1YMP 200kHz to 600kHz Hyper Light Load 40C to +125C 12mm 12mm 4mm Pb-Free QFN 64-pin MIC45212-2YMP 200kHz to 600kHz Hyper Speed Control 40C to +125C 12mm 12mm 4mm Pb-Free QFN Note: 1. Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5k in series with 100pF. Pin Configuration 64-Pin 12mm 12mm 4mm QFN (Top View) March 5, 2015 2 Revision 1.1