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MIC24052YJL

更新时间： 2024-11-08 12:25:59
品牌 Logo 应用领域
麦瑞 - MICREL 稳压器
页数 文件大小 规格书
30页 1383K
描述
12V, 6A High-Efficiency Buck Regulator

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MIC24052YJL 数据手册

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MIC24052  
12V, 6A High-Efficiency Buck Regulator  
SuperSwitcher II  
General Description  
Features  
•
•
HyperLight Load efficiency – up to 80% at 10mA  
Hyper Speed Control architecture enables  
− High delta V operation (VIN = 19V and VOUT = 0.8V)  
− Small output capacitance  
Input voltage range: 4.5V to 19V  
Output current up to 6A  
The Micrel MIC24052 is  
a
constant-frequency,  
synchronous DC/DC buck regulator featuring adaptive on-  
time control architecture. The MIC24052 operates over a  
supply range of 4.5V to 19V. It has an internal linear  
regulator which provides a regulated 5V to power the  
internal control circuitry. The MIC24052 operates at a  
constant 600kHz switching frequency in continuous-  
conduction mode and can be used to provide up to 6A of  
output current. The output voltage is adjustable down to  
0.8V.  
Micrel’s HyperLight Load® architecture provides the same  
high-efficiency and ultra-fast transient response as the  
Hyper Speed Controlarchitecture under medium to heavy  
loads, but also maintains high efficiency under light load  
•
•
•
•
•
•
•
•
•
Up to 95% efficiency  
Adjustable output voltage from 0.8V to 5.5V  
±1% FB accuracy  
Any Capacitor™ stable − zero-to-high ESR  
600kHz switching frequency  
Power good (PG) output  
conditions  
by  
transitioning  
to  
variable-frequency,  
Foldback current-limit and “hiccup mode” short-circuit  
protection  
discontinuous-mode operation.  
The MIC24052 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, thermal shutdown, internal  
soft-start to reduce the inrush current, foldback current  
limit and “hiccup mode” short-circuit protection. The  
MIC24052 includes a power good (PG) output to allow  
simple sequencing.  
•
•
•
Safe start-up into pre-biased loads  
–40°C to +125°C junction temperature range  
Available in 28-pin 5mm × 6mm QFN package  
Applications  
•
•
•
Servers and work stations  
Routers, switches, and telecom equipment  
Base stations  
The 6A Hyper Speed Control part, MIC24051, is also  
available on Micrel’s web site.  
All support documentation can be found on Micrel’s web  
site at: www.micrel.com.  
___________________________________________________________________________________________________________  
Typical Application  
Efficiency (VIN = 12V)  
vs. Output Current  
100  
95  
5.0V  
3.3V  
2.5V  
1.8V  
1.5V  
1.2V  
1.0V  
0.9V  
0.8V  
90  
85  
80  
75  
70  
65  
60  
55  
50  
0
1
2
3
4
5
6
7
8
OUTPUT CURRENT (A)  
HyperLight Load, is a registered trademark of Micrel, Inc.  
Hyper Speed Control, SuperSwitcher II, and Any Capacitor are trademarks of Micrel, 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  
M9999-120312-A  
December 2012  
1234567...30

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