参数资料
型号: MIC2166YMME TR
厂商: Micrel Inc
文件页数: 1/28页
文件大小: 0K
描述: IC REG CTRLR PWM HYBRID 10TSOP
标准包装: 2,500
系列: Hyper Speed Control™
PWM 型: 混合物
输出数: 1
频率 - 最大: 750kHz
占空比: 82%
电源电压: 4.5 V ~ 28 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 125°C
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)裸露焊盘
包装: 带卷 (TR)
MIC2166
Adaptive On-Time DC-DC Controller
Hyper Speed Control? Family
General Description
Features
The Micrel MIC2166 is a synchronous adaptive on-time
buck controller targeting high-performance, cost-sensitive
applications such as set-top boxes, gateways, routers,
computing peripherals, and telecom/networking
equipment.
The MIC2166 operates over a supply range of 4.5V to
28V. It has an internal linear regulator which provides a
regulated 5V supply to power the internal control circuitry.
MIC2166 operates at a constant 600kHz switching
frequency and can be used to drive up to 25A of output
current. The output voltage is adjustable from 0.8V to
5.5V.
A unique Hyper Speed Control? architecture enables
ultra-fast transient response while reducing the output
capacitance and also makes High V IN /Low V OUT operation
possible.
A UVLO feature is provided to ensure proper operation
under power-sag conditions to prevent the external power
MOSFET from over heating. Also, a soft-start feature is
provided to reduce the inrush current. Short current
sensing on the bottom MOSFET with hiccup mode current
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Hyper Speed Control? architecture enables
- High delta V operation (V IN =28V and V OUT =0.8V)
- Small output capacitance
Built-in 5V regulator for single-supply operation
Any Capacitor TM stable
- Zero ESR to high ESR
Power-Good (PGOOD) output
Input voltage range: 4.5V to 28V
5 μ A typical shutdown current
25A output current drive capability
Adjustable output from 0.8V to 5.5V with ±1% FB
accuracy
600kHz switching frequency
Internal 5ms digital soft-start
Thermal-shutdown and hiccup current-limit protection
No external current-sense resistor required
Safe start-up into pre-biased loads
10-pin MSOP ePad package
limiting ensures protection in case of an output short
circuit. Further, the MIC2166 includes an EN pin to shut
down the converter and a Power-Good (PGOOD) pin to
allow simple sequencing.
? –40 ° C to +125 ° C junction temperature range
Applications
? Set-top box, gateways, routers and DSL modems
The MIC2166 is available in a 10 pin MSOP ePad package
with a junction operating temperature ranging from –40 ° C
to +125 ° C. All support documentation can be found on
Micrel’s web site at: www.micrel.com .
Typical Application
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Printers, scanners, graphic and video cards
Servers, PCs and processor core supply
Low-Voltage Distributed Power
12V to 3.3V Efficiency
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90
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10
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MIC2166 Adjustable Output 600kHz Buck Converter
OUTPUT CURRENT (A)
MLF and Micro LeadFrame are registered trademarks of Amkor Technology, Inc.
Hyper Light Load 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
September 2010
M9999-092410-C
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