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MIC22950YML TR

Description
voltage regulators - switching regulators 10a integrated switch synchronous buck regulator w/ frequency progammable to 2 mhz
Categorysemiconductor    Other integrated circuit (IC)   
File Size1MB,22 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
Environmental Compliance  
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MIC22950YML TR Overview

voltage regulators - switching regulators 10a integrated switch synchronous buck regulator w/ frequency progammable to 2 mhz

MIC22950YML TR Parametric

Parameter NameAttribute value
ManufactureMicrel
Product CategoryVoltage Regulators - Switching Regulators
RoHSYes
PackagingReel
Factory Pack Quantity1000
MIC22950
10A Integrated Switch Synchronous
Buck Regulator with Frequency
Programmable to 2MHz
General Description
The Micrel MIC22950 is a high-efficiency 10A integrated
switch, synchronous buck (step-down) regulator. The
MIC22950 switching frequency is programmable from
400kHz to 2MHz, allowing the customer to optimize
designing either for efficiency or for the smallest footprint.
The MIC22950 achieves over 95% efficiency while still
switching at 2MHz over a broad load range.
The ultra-high-speed control loop keeps the output voltage
within regulation, even under extreme transient load
swings commonly found in FPGAs and low voltage ASICs.
The output voltage can be adjusted down to 0.7V in order
to address all low-voltage power needs.
The MIC22950 features a full range of sequencing and
tracking options. The EN/DLY and the DELAY pins,
combined with the POR/PG pin, allow multiple outputs to
be sequenced in several ways during turn-on and turn-off
by using EN pin. The RC (Ramp Control™) pin allows the
device to be connected to any another device in the
MIC22x00 family of products, to keep the output voltages
within a certain delta V during start-up.
The MIC22950 is available in a 32-pin 5mm x 5mm MLF
®
with a junction operating range from
−40°C
to
+125°C.
Datasheet and supporting documentation can be found on
Micrel’s web site at:
www.micrel.com.
Features
2.6V to 5.5V supply voltage
Fully-integrated MOSFET switches
Adjustable output voltage option down to 0.7V
Output load current up to 10A
Full sequencing and tracking capability
Power-On Reset
Efficiency >95% across a broad load range
Operating frequency programmable: 400kHz to 2MHz
Ultra-fast transient response
100% maximum duty cycle
Micropower shutdown
Thermal-shutdown and current-limit protection
Available in a 32-pin 5mm x 5mm MLF
®
package
−40°C
to
+125°C
junction temperature range
Applications
High-power density point-of-load conversion
Base stations, Servers and Routers
Blu-ray players, DVD Recorders
Computer Peripherals
FPGAs, DSP, and low-voltage ASIC power
_________________________________________________________________________________________________________________________
Typical Application
Efficiency vs. Load Current
100
95
EFFICIENCY (%)
90
85
80
75
70
65
60
0
2
4
6
V
IN
= 5V
V
OUT
= 3.3V
T
A
= 25°C
8
10
LOAD CURRENT (A)
MIC22950 10A Synchronous DC-DC Converter
Ramp Control is a trademark of Micrel, Inc
MLF and
MicroLeadFrame
are registered trademarks of Amkor Technology, Inc.
Sequencing and Tracking
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 •
http://www.micrel.com
February 2010
M9999-021910-B

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