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MIC2102 Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC2102 Datasheet(HTML) 1 Page - Micrel Semiconductor |
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1 / 36 page  MIC2101/02 38V, Synchronous Buck Controllers Featuring Adaptive On-Time Control Hyper Speed Control Family Hyper Speed Control, Hyper Light Load, and Any Capacitor are trademarks of Micrel, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com November 13, 2013 Revision 2.0 General Description The Micrel MIC2101/02 are constant-frequency, synchronous buck controllers featuring a unique adaptive ON-time control architecture. The MIC2101/02 operates over an input supply range from 4.5V to 38V and can be used to supply up to 15A of output current. The output voltage is adjustable down to 0.8V with a guaranteed accuracy of ±1%. The device operates with programmable switching frequency from 200kHz to 600kHz. Micrel’s Hyper Light Load™ architecture provides the same high-efficiency and ultra-fast transient response as the Hyper Speed Control architecture under the medium to heavy loads, but also maintains high efficiency under light load conditions by transitioning to variable frequency, discontinuous-mode operation. The MIC2101/02 offers a full suite of protection features to ensure protection of the IC during fault conditions. These include under-voltage lockout to ensure proper operation under power-sag conditions, internal soft-start to reduce inrush current, fold-back current limit, “hiccup” mode short- circuit protection and thermal shutdown. All support documentation can be found on Micrel’s web site at: www.micrel.com. Features Hyper Speed Control architecture enables: High Delta V operation (VIN = 38V and VOUT = 1.2V) Any Capacitor stable 4.5V to 38V input voltage Adjustable output voltage from 0.8 V to 24V (also limited by duty cycle) 200kHz to 600kHz, programmable switching frequency Hyper Light Load Control (MIC2101) Hyper Speed Control (MIC2102) Enable input and Power Good output Built-in 5V regulator for single-supply operation Programmable current limit and fold-back “hiccup” mode short-circuit protection 5ms internal soft-start, internal compensation, and thermal shutdown Supports safe start-up into a pre-biased output –40 C to +125 C junction temperature range Available in 16-pin 3mm x 3mm QFN package Applications Distributed power systems Networking/telecom Infrastructure Printers, scanners, graphic cards, and video cards Typical Application MIC2101/02 Wide Input, Hyper Light Load Buck Converter MIC2101 Efficiency (VIN = 12V) vs. Output Current (MIC2101) 10 20 30 40 50 60 70 80 90 100 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 OUTPUT CURRENT (A) 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V 1.0V 0.9V 0.8V fSW = 600kHz (CCM) |
Similar Part No. - MIC2102 |
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Similar Description - MIC2102 |
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