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MIC2182-5.0BM PDF预览

MIC2182-5.0BM

更新时间: 2024-11-10 22:11:07
品牌 Logo 应用领域
麦瑞 - MICREL 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管信息通信管理
页数 文件大小 规格书
28页 224K
描述
High-Efficiency Synchronous Buck Controller Final Information

MIC2182-5.0BM 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
包装说明:SOP, SOP16,.25Reach Compliance Code:not_compliant
Factory Lead Time:1 week风险等级:5.29
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:e0
长度:9.9 mm湿度敏感等级:1
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
最大输出电流:0.1 A标称输出电压:5 V
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP16,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):240
认证状态:Not Qualified座面最大高度:1.895 mm
子类别:Switching Regulator or Controllers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:Tin/Lead (Sn85Pb15)端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:30宽度:3.9 mm
Base Number Matches:1

MIC2182-5.0BM 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  
5impedance 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 Informationsection 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  

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