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MIC27600 Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC27600 Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 28 page MIC27600 36V, 7A Hyper Speed Control ™ Synchronous DC-DC Buck Regulator SuperSwitcher II ™ Hyper Speed Control, SuperSwitcher II and Any Capacitor are trademarks of Micrel, Inc. MLF and MicroLeadFrame are registered trademarks of Amkor Technology, 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 General Description The Micrel MIC27600 is a constant-frequency, synchronous buck regulator featuring a unique digitally-modified adaptive on-time control architecture. The MIC27600 operates over an input supply range of 4.5V to 36V and provides a regulated output of up to 7A of output current. The output voltage is adjustable down to 0.8V with a guaranteed accuracy of ±1%, and the device operates at a switching frequency of 300kHz. Micrel’s Hyper Speed Control ™ 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 MIC27600 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, foldback 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 = 36V and VOUT = 0.8V) - Small output capacitance • 4.5V to 36V voltage input • Adjustable output from 0.8V to 5.5V (VHSD ≤ 28V) • Adjustable output from 0.8V to 3.6V (VHSD ≤ 36V) • ±1% FB accuracy • Any Capacitor ™ Stable - Zero-ESR to high-ESR • 7A output current capability, up to 95% efficiency • 300kHz switching frequency • Internal compensation, 6ms Internal soft-start • Foldback current-limit and “hiccup” mode short-circuit protection • Thermal shutdown • Supports safe startup into a pre-biased load • –40 °C to +125°C junction temperature range • 28-pin 5mm × 6mm MLF® package Applications • Distributed power systems • Communications/networking infrastructure • Set-top box, gateways and routers • Printers, scanners, graphic cards and video cards ___________________________________________________________________________________________________________ Typical Application Efficiency (VIN = 28V) vs. Output Current 60 65 70 75 80 85 90 95 01 234 567 89 OUTPUT CURRENT (A) 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V 1.0V 0.9V 0.8V July 2011 M9999-070811 |
Similar Part No. - MIC27600_11 |
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Similar Description - MIC27600_11 |
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