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Features

? Input Voltage Range: 4.5V to 36V

? Adjustable Output from 0.6V to 32V (also limited

by Duty Cycle)

? High Current Capability of 6A for MIC24066/7

? Adaptive Constant On Time Control

? 0.6V Internal Reference with ±1 Accuracy

? Up to 800 kHz Switching Frequency

? High Voltage Internal LDO for Single Supply

Operation

? Secondary LDO to Improve System Efficiency

? Supports Start-up to Pre-bias Output

? Internal Compensator for Tight Output Regulation

? Enable Function for Low Stand-by Current

? Programmable HLL/CCM Operation (MIC24067)

? Programmable Soft Start Time (MIC24066)

? Programmable Current Limit and Hiccup Short

Circuit Protection

? Thermal Shut Down with Hysteresis

? Compact Size: 5 mm x 6 mm 36-Pin Wettable

Flank VQFN

? -40°C to +125°C Junction Temperature Ranges

Applications

? Servers and Workstations

? Routers, Switches and Telecom Equipment

? Base Stations

? High Power Density Point-of-Load Conversion

General Description

The MIC24066/7 is a family of commercial 36V synchronous

switching regulators delivering 6A of load

current.

The MIC24066/7 are wide input range (4.5V-36V)

integrated FET switching regulator which supports 6A

load. These devices have an enhanced high voltage

COT controller co-packaged with a pair of N-Channel

FETS with improved avalanche rating.

The output voltage is adjustable down to 0.6V with ±1

accuracy. The Hyper Speed Control? proprietary

architecture allows for ultra-fast transient response

while reducing the output capacitance.

These devices feature programmable switching

frequency from 270 kHz to 800 kHz. The operating

mode under light load conditions can be selected

between HyperLight Load? (HLL) mode and

Continuous Conduction Mode (CCM) in MIC24067.

HLL mode results in higher efficiency than that of the

CCM mode under light load conditions while the CCM

mode keeps the switching frequency almost constant

over the entire load current range. The enable pin (EN)

allows user to enable/disable the device operation. The

secondary LDO (powered by EXTVDD) allows user to

operate the system at increased efficiency by supplying

the device bias power from the output of the switching

regulator.

An open drain PGOOD pin provides a power good

signal to indicate output voltage is within ±10 of the

target level.

These devices offer a full suite of protection features to

ensure safe operation of the IC during fault conditions.

These include UVLO, hiccup current limit short circuit

protection and thermal shutdown.

These devices are available in a 36-pin 5 mm x 6 mm,

Wettable Flank VQFN with a junction operating range

from -40°C to +125°C.