5秒后页面跳转
捷配首页

Datasheet > 电源电路 > 开关式稳压器或控制器> MIC2172
MIC2172 PDF预览

MIC2172

更新时间： 2024-02-13 05:22:50
品牌 Logo 应用领域
麦瑞 - MICREL 稳压器开关
页数 文件大小 规格书
16页 133K
描述
100kHz 1.25A Switching Regulators Preliminary Information

阅读下载

中文翻译

获取价格

MIC2172 技术参数

是否Rohs认证： 符合生命周期：Active
包装说明：LEAD FREE, PLASTIC, DIP-8Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
Factory Lead Time：10 weeks风险等级：1.47
Samacsys Confidence：4Samacsys Status：Released
Samacsys PartID：1838470Samacsys Pin Count：8
Samacsys Part Category：Integrated CircuitSamacsys Package Category：Dual-In-Line Packages
Samacsys Footprint Name：MIC4424YNSamacsys Released Date：2020-01-16 13:22:39
Is Samacsys：N模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：40 V最小输入电压：3 V
标称输入电压：5 VJESD-30 代码：R-PDIP-T8
JESD-609代码：e3长度：9.525 mm
功能数量：1端子数量：8
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：3.5 A封装主体材料：PLASTIC/EPOXY
封装代码：DIP封装形状：RECTANGULAR
封装形式：IN-LINE峰值回流温度（摄氏度）：NOT APPLICABLE
认证状态：Not Qualified表面贴装：NO
切换器配置：BOOST最大切换频率：115 kHz
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn) - annealed
端子形式：THROUGH-HOLE端子节距：2.54 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT APPLICABLE
宽度：7.62 mmBase Number Matches：1

MIC2172 数据手册

 浏览型号MIC2172的Datasheet PDF文件第2页浏览型号MIC2172的Datasheet PDF文件第3页浏览型号MIC2172的Datasheet PDF文件第4页浏览型号MIC2172的Datasheet PDF文件第5页浏览型号MIC2172的Datasheet PDF文件第6页浏览型号MIC2172的Datasheet PDF文件第7页 
MIC2172/3172  
100kHz 1.25A Switching Regulators  
Preliminary Information  
slave’s. The master MIC2172’s oscillator frequency is in-  
creased up to 135kHz by connecting a resistor from SYNC to  
ground (see applications information).  
General Description  
The MIC2172 and MIC3172 are complete 100kHz SMPS  
current-mode controllers with internal 65V 1.25A power  
switches. The MIC2172 features external frequency syn-  
chronization or frequency adjustment, while the MIC3172  
features an enable/shutdown control input.  
The MIC2172/3172 is available in an 8-pin plastic DIP or  
SOIC for –40°C to +85°C operation.  
Features  
• 1.25A, 65V internal switch rating  
• 3V to 40V input voltage range  
• Current-mode operation  
• Internal cycle-by-cycle current limit  
• Thermal shutdown  
Although primarily intended for voltage step-up applications,  
the floating switch architecture of the MIC2172/3172 makes  
it practical for step-down, inverting, and Cuk configurations  
as well as isolated topologies.  
Operating from 3V to 40V, the MIC2172/3172 draws only  
7mA of quiescent current making it attractive for battery  
operated supplies.  
• Low external parts count  
• Operates in most switching topologies  
• 7mA quiescent current (operating)  
• <1µA quiescent current, shutdown mode (MIC3172)  
• TTL shutdown compatibility (MIC3172)  
• External frequency synchronization (MIC2172)  
• External frequency trim (MIC2172)  
• Fits most LT1172 sockets (see applications info)  
The MIC3172 is for applications that require on/off control of  
the regulator. The MIC3172 is externally shutdown by  
applyingaTTLlowsignaltoEN(enable). Whendisabled, the  
MIC3172 draws only leakage current (typically less than  
1µA). ENmustbehighfornormaloperation. Forapplications  
4
not requiring control, EN must be tied to V or TTL high.  
IN  
Applications  
• Laptop/palmtop computers  
• Toys  
The MIC2172 is for applications requiring two or more SMPS  
regulators that operate from the same input supply. The  
MIC2172 features a SYNC input which allows locking of its  
internal oscillator to an external reference. This makes it  
possibletoavoidtheaudiblebeatfrequenciesthatresultfrom  
the unequal oscillator frequencies of independent SMPS  
regulators.  
• Hand-held instruments  
• Off-line converter up to 50W  
(requires external power switch)  
• Predriver for higher power capability  
• Master/slave configurations (MIC2172)  
A reference signal can be supplied by one MIC2172 desig-  
natedasamaster. Toinsurelockingoftheslave’soscillators,  
the reference oscillator frequency must be higher than the  
Typical Applications  
VOUT  
5V, 0.25A  
VIN  
4V to 6V  
+5V  
T1  
(4.75V min.)  
D2  
1N5818  
C1  
R4*  
C3*  
D1*  
C1*  
22µF  
L1  
27µH  
22µF  
R1  
C4  
470µF  
3.74k  
1%  
VOUT  
+12V, 0.14A  
VIN  
D1  
VIN  
Enable  
VSW  
N/C  
SYNC  
VSW  
EN  
Shutdown  
R1  
10.7k  
1%  
1:1.25  
PRI = 100µH  
1N5822  
MIC2172  
L
MIC3172  
COMP  
FB  
COMP  
FB  
GND  
R2  
GND  
R3  
1k  
R2  
1.24k  
1%  
C2  
470µF  
P1 P2  
S
R3  
1k  
1.24k  
P1 P2  
S
1%  
C3  
1µF  
C2  
1µF  
* Locate near MIC2172 when supply leads > 2"  
* Optional voltage clipper (may be req’d if T1 leakage inductance too high)  
Figure 1.  
Figure 2.  
MIC2172 5V to 12V Boost Converter  
MIC3172 5V Flyback Converter  
1997  
4-13  
1234567...16

中文翻译

下载PDF

与MIC2172相关器件

型号 品牌 获取价格 描述 数据表
MIC2172_05 MICREL

获取价格

 		100kHz 1.25A Switching Regulators
MIC2172_06 MICREL

获取价格

 		100kHz 1.25A Switching Regulators
MIC2172BM MICREL

获取价格

 		100kHz 1.25A Switching Regulators Preliminary Information
MIC2172BM MICROCHIP

获取价格

 		Switching Regulator, Current-mode, 3.5A, 115kHz Switching Freq-Max, BIPolar, PDSO8, SOIC-8
MIC2172BMT&R MICREL

获取价格

 		Switching Regulator, Current-mode, 3.5A, 115kHz Switching Freq-Max, PDSO8, SOIC-8
MIC2172BN MICREL

获取价格

 		100kHz 1.25A Switching Regulators Preliminary Information
MIC2172YM MICREL

获取价格

 		100kHz 1.25A Switching Regulators
MIC2172YM MICROCHIP

获取价格

 		3.5A SWITCHING REGULATOR, 115kHz SWITCHING FREQ-MAX, PDSO8
MIC2172YMTR MICREL

获取价格

 		暂无描述
MIC2172YM-TR MICROCHIP

获取价格

 		3.5A SWITCHING REGULATOR, 115kHz SWITCHING FREQ-MAX, PDSO8

与MIC2172相关文章

您还可以找


热门产品
PCB打样/小批量
铝基板
BOM智能配单
PCBA制造
钣金
精密CNC
模具注塑
薄膜开关
精选活动
PCBA打样特惠
四六层板品质升级
铝基板品质升级
一体化电子制造
DFM下载
服务支持
企业认证
产品展示
工厂展示
工艺能力
积分商城
关于捷配
捷配简介
企业文化
公司动态
人才招聘
联系我们
帮助中心
下单流程
付款流程
开票流程
常见问题
全球PCB制造服务专线 400-613-0088

工作时间：9:00-21:00

CEO邮箱：ceo@jiepei.com

投诉邮箱：tousu@jiepei.com

捷配网-微信公众号 微信公众号
捷配网-微信公众号 抖音公众号
资质认证：
合作快递：
支付方式：
Copyright © 2024 Jiepei.com Inc. All Rights Reserved. 版权所有:杭州捷配信息科技有限公司 浙公网安备 33010502006866号 浙ICP备10014259号-119 营业执照ICP证