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MIC27600

MICREL
Part Number MIC27600
Manufacturer MICREL
Description 36V / 7A Hyper Speed Control Synchronous DC-DC Buck Regulator
Published Mar 10, 2011
Detailed Description MIC27600 36V, 7A Hyper Speed Control™ Synchronous DC-DC Buck Regulator SuperSwitcher II™ General Description The Micrel...
Datasheet PDF File MIC27600 PDF File

MIC27600
MIC27600

Overview
MIC27600 36V, 7A Hyper Speed Control™ Synchronous DC-DC Buck Regulator SuperSwitcher II™ 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 ultrafast 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 shortcircuit 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 • ...


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