Microchip MIC24067 Bedienungsanleitung
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2022 Microchip Technology Inc. and its subsidiariesDS20006730A-page 1
MIC24066/7
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 800kHz 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: 5mmx6mm 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 syn-
chronous 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 270kHz to 800kHz. 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 5mmx6mm,
Wettable Flank VQFN with a junction operating range
from -40°C to +125°C.
36V, 6A High Performance Switching Buck Regulators
Produktspezifikationen
| Marke: | Microchip |
| Kategorie: | Nicht kategorisiert |
| Modell: | MIC24067 |
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