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MIC2176-3YMM Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC2176-3YMM Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 31 page MIC2176-1/-2/-3 Wide Input Voltage, Synchronous Buck Controllers Featuring Adaptive On-Time Control Hyper Speed Control™ Family Hype MLF and 4-0800 • fax + 1 ( r Speed Control, SuperSwitcher II and Any Capacitor are trademarks of Micrel, Inc. Micro LeadFrame are registered trademarks of Amkor Technology, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 ( 408) 94 408) 474-1000 • http://www.micrel.com Novem M9999-111710-A ber 2010 General Description The Micrel MIC2176-1/-2/-3 is a family of constant-frequency, synchronous buck controllers featuring a unique digitally modified adaptive ON-time control architecture. The MIC2176 family operates over an input supply range of 4.5V to 75V 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%, and the device operates at a constant switching frequency of 100kHz, 200kHz, and 300kHz. Micrel’s Hyper Speed Control TM architecture allows for ultra- fast transient response while reducing the output capacitance and also makes (High VIN)/(Low VOUT) operation possible. This digitally modified adaptive tON ripple control architecture combines the advantages of fixed-frequency operation and fast transient response in a single device. The MIC2176 offers a full suite of protection features to ensure protection of the IC during fault conditions. These include undervoltage 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 TM architecture enables - High delta V operation (VIN = 75V and VOUT = 1.2V) - Small output capacitance • 4.5V to 75V input voltage • Output down to 0.8V with ±1% accuracy • Any Capacitor TM Stable - Zero-ESR to high-ESR output capacitance • 100kHz/200kHz/300kHz switching frequency • Internal compensation • 6ms Internal soft-start • Foldback current limit and “hiccup” mode short-circuit protection • Thermal shutdown • Supports safe start-up into a pre-biased output • –40 °C to +125°C junction temperature range • Available in 10-pin MSOP package Applications • Distributed power systems • Networking/Telecom Infrastructure • Printers, scanners, graphic cards and video cards ___________________________________________________________________________________________________________ Typical Application MIC2176-2 Adjustable Output 200KHz Buck Converter Efficiency vs. Output Current 40 45 50 55 60 65 70 75 80 85 90 95 0 12 345 OUTPUT CURRENT (A) 28VIN 48VIN 60VIN MIC2176-2 VOUT = 3.3V VDD = 5V LINEAR |
Similar Part No. - MIC2176-3YMM |
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Similar Description - MIC2176-3YMM |
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