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MIC2182-5.0BSM

更新时间： 2024-01-22 21:45:32
品牌 Logo 应用领域
麦瑞 - MICREL 控制器
页数 文件大小 规格书
28页 224K
描述
High-Efficiency Synchronous Buck Controller Final Information

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中文翻译

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MIC2182-5.0BSM 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Transferred零件包装代码：SOIC
包装说明：SSOP,针数：16
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.66
模拟集成电路 - 其他类型：SWITCHING CONTROLLER控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：32 V
最小输入电压：4.5 V标称输入电压：15 V
JESD-30 代码：R-PDSO-G16JESD-609代码：e3
长度：6.2 mm湿度敏感等级：2
功能数量：1端子数量：16
最高工作温度：85 °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：SSOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, SHRINK PITCH峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：2 mm
表面贴装：YES切换器配置：PUSH-PULL
最大切换频率：330 kHz技术：BICMOS
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
端子形式：GULL WING端子节距：0.65 mm
端子位置：DUAL处于峰值回流温度下的最长时间：40
宽度：5.3 mmBase Number Matches：1

MIC2182-5.0BSM 数据手册

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MIC2182  
High-Efficiency Synchronous Buck Controller  
Final Information  
General Description  
Features  
Micrel’s MIC2182 is a synchronous buck (step-down) switch-  
ing regulator controller. An all N-channel synchronous archi-  
tecture and powerful output drivers allow up to a 20A output  
current capabilty. The PWM and skip-mode control scheme  
allows efficiency to exceed 95% over a wide range of load  
current, making it ideal for battery powered applications, as  
well as high current distributed power supplies.  
• 4.5V to 32V Input voltage range  
• 1.25V to 6V Output voltage range  
• 95% efficiency  
• 300kHz oscillator frequency  
• Current sense blanking  
• 5Ω impedance MOSFET Drivers  
• Drives N-channel MOSFETs  
• 600µA typical quiescent current (skip-mode)  
The MIC2182 operates from a 4.5V to 32V input and can  
operate with a maximum duty cycle of 86% for use in low-  
dropout conditions. It also features a shutdown mode that  
reduces quiescent current to 0.1µA.  
• Logic controlled micropower shutdown (I < 0.1µA)  
• Current-mode control  
Q
• Cycle-by-cycle current limiting  
• Built-in undervoltage protection  
• Adjustable undervoltage lockout  
• Easily synchronizable  
• Precision 1.245V reference output  
• 0.6% total regulation  
• 16-pin SOP and SSOP packages  
• Frequency foldback overcurrent protection  
• Sustained short-circuit protection at any input voltage  
• 20A output current capability  
The MIC2182 achieves high efficiency over a wide output  
current range by automatically switching between PWM and  
skip mode. Skip-mode operation enables the converter to  
maintain high efficiency at light loads by turning off circuitry  
pertaining to PWM operation, reducing the no-load supply  
current from 1.6mA to 600µA. The operating mode is inter-  
nally selected according to the output load conditions. Skip  
mode can be defeated by pulling the PWM pin low which  
reduces noise and RF interference.  
Applications  
The MIC2182 is available in a 16-pin SOP (small-outline  
package) and SSOP (shrink small-outline package) with an  
operating range from –40°C to +85°C.  
• DC power distribution systems  
• Notebook and subnotebook computers  
• PDAs and mobile communicators  
• Wireless modems  
• Battery-operated equipment  
Typical Application  
C11  
22uf  
35V  
VIN  
D2  
MIC2182-3.3BSM  
4.5V to 30V*  
11 SD103BWS  
10  
VIN  
VDD  
C9  
4.7µF  
16V  
x2  
C5  
0.1µF  
R7  
14  
BST  
C6  
0.1µF  
100k  
6
16  
L1  
EN/UVLO HSD  
Q2*  
VOUT  
3.3V/4A  
R2  
0.02Ω  
10µH  
Si4884  
2
15  
13  
12  
8
PWM  
VSW  
LSD  
C4  
C7  
D1  
B140  
1nF  
Q1*  
220uf  
Si4884  
10V ×2  
1
3
5
SS  
PGND  
CSH  
GND  
COMP  
SYNC  
C13, 1nF  
R1  
2k  
9
C3  
0.1µF  
VOUT  
VREF  
7
* 30V maximum input voltage limit is due  
to standard 30V MOSFET selection.  
C2  
2.2nF  
SGND  
C1  
0.1µF  
See “Application Information” section for  
5V to 3.3V/10A and other circuits.  
4
GND  
4.5V–30V* to 3.3V/4A 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  
June 2000  
1
MIC2182  
1234567...28

中文翻译

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