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MIC2168MM

更新时间: 2024-01-10 05:55:53
品牌 Logo 应用领域
麦瑞 - MICREL /
页数 文件大小 规格书
14页 158K
描述
1MHZ PWM SYNCHRONOUS BUCK CONTROL IC

MIC2168MM 技术参数

是否Rohs认证: 符合生命周期:Active
包装说明:TSSOP,Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.7其他特性:ALSO HAS OUTPUT VOLTAGE ADJUSTABLE DOWN TO 0.8V
模拟集成电路 - 其他类型:SWITCHING CONTROLLER控制模式:VOLTAGE-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:14.5 V
最小输入电压:3 V标称输入电压:5 V
JESD-30 代码:S-PDSO-G10JESD-609代码:e4
长度:3 mm湿度敏感等级:2
功能数量:1端子数量:10
最高工作温度:125 °C最低工作温度:-40 °C
标称输出电压:5 V封装主体材料:PLASTIC/EPOXY
封装代码:TSSOP封装形状:SQUARE
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:1.1 mm
表面贴装:YES切换器配置:PUSH-PULL
最大切换频率:1100 kHz温度等级:AUTOMOTIVE
端子面层:Nickel/Palladium/Gold (Ni/Pd/Au)端子形式:GULL WING
端子节距:0.5 mm端子位置:DUAL
处于峰值回流温度下的最长时间:40宽度:3 mm
Base Number Matches:1

MIC2168MM 数据手册

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MIC2168  
1MHz PWM Synchronous Buck Control IC  
General Description  
Features  
The MIC2168 is a high-efficiency, simple to use 1MHz PWM  
synchronous buck control IC housed in a small MSOP-10  
package. The MIC2168 allows compact DC/DC solutions  
with a minimal external component count and cost.  
3V to 14.5V input voltage range  
Adjustable output voltage down to 0.8V  
Up to 95% efficiency  
1MHz PWM operation  
Adjustable current-limit senses high-side N-Channel  
MOSFET current  
No external current sense resistor  
Adaptive gate drive increases efficiency  
Ultra-fast response with hysteretic transient recovery  
mode  
Overvoltage protection protects the load in fault  
conditions  
Dual mode current limit speeds up recovery time  
Hiccup mode short-circuit protection  
Internal soft-start  
The MIC2168 operates from a 3V to 14.5V input, without the  
need of any additional bias voltage. The output voltage can  
be precisely regulated down to 0.8V. The adaptive all  
N-Channel MOSFET drive scheme allows efficiencies over  
95% across a wide load range.  
The MIC2168 senses current across the high-side N-Chan-  
nel MOSFET, eliminating the need for an expensive and  
lossy current-sense resistor. Current limit accuracy is main-  
tained by a positive temperature coefficient that tracks the  
increasing R  
of the external MOSFET. Further cost  
DS(ON)  
and space are saved by the internal in-rush-current limiting  
digital soft-start.  
Dual function COMP and EN pin allows low-power  
shutdown  
Small size MSOP 10-lead package  
The MIC2168 is available in a 10-pin MSOP package, with a  
wide junction operating range of –40°C to +125°C.  
Applications  
Point-of-load DC/DC conversion  
Set-top boxes  
All support documentation can be found on Micrel’s web  
site at www.micrel.com.  
Graphic cards  
LCD power supplies  
Telecom power supplies  
Networking power supplies  
Cable modems and routers  
Typical Application  
VIN = 5V  
SD103BWS  
MIC2168 Efficiency  
100µF  
100  
95  
90  
85  
80  
75  
70  
4.7µF  
0.1µF  
1kΩ  
VDD  
BST  
CS  
IRF7821  
1.2µH  
VIN  
HSD  
VSW  
65  
MIC2168  
3.3V  
VIN = 5V  
VOUT = 3.3V  
60  
55  
50  
COMP/EN  
10kΩ  
IRF7821  
LSD  
FB  
100pF  
100nF  
0
2
4
6
8
10  
150µF x 2  
I
(A)  
LOAD  
GND  
4kΩ  
3.24kΩ  
MIC2168 Adjustable Output 1MHz Converter  
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com  
M9999-111803  
November 2003  
1

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