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MIC4575-3.3WUTR PDF预览

MIC4575-3.3WUTR

更新时间: 2024-11-30 14:36:43
品牌 Logo 应用领域
美国微芯 - MICROCHIP 信息通信管理开关
页数 文件大小 规格书
15页 525K
描述
3.2A SWITCHING REGULATOR, 220kHz SWITCHING FREQ-MAX, PSSO5, ROHS COMPLIANT, TO-263, 5 PIN

MIC4575-3.3WUTR 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:D2PAK
包装说明:TO-263,针数:4
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.64
Is Samacsys:N模拟集成电路 - 其他类型:SWITCHING REGULATOR
最大输入电压:24 V最小输入电压:4 V
标称输入电压:12 VJESD-30 代码:R-PSSO-G5
JESD-609代码:e3长度:10.363 mm
湿度敏感等级:3功能数量:1
端子数量:5最高工作温度:85 °C
最低工作温度:-40 °C最大输出电流:3.2 A
标称输出电压:3.3 V封装主体材料:PLASTIC/EPOXY
封装代码:TO-263封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):245
认证状态:Not Qualified座面最大高度:4.902 mm
表面贴装:YES切换器配置:BUCK
最大切换频率:220 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:1.702 mm
端子位置:SINGLE处于峰值回流温度下的最长时间:40
宽度:8.7757 mmBase Number Matches:1

MIC4575-3.3WUTR 数据手册

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MIC4575  
200kHz Simple 1A Buck Regulator  
General Description  
Features  
The MIC4575 is a series of easy to use fixed and  
adjustable BiCMOS step-down (buck) switch-mode voltage  
regulators. The 200kHz MIC4575 duplicates the pinout  
and function of the 52kHz LM2575. The higher switching  
frequency may allow up to a 2:1 reduction in output filter  
inductor size.  
Fixed 200kHz operation  
3.3V, 5V, and adjustable output versions  
Voltage over specified line and load conditions:  
Fixed version: ±3% max. output voltage  
Adjustable version: ±2% max. feedback voltage  
Guaranteed 1A switch current  
Wide 4V to 24V input voltage range  
Wide 1.23V to 20V output voltage range  
Requires minimum external components  
< 200µA typical shutdown mode  
75% efficiency (adjustable version > 75% typical)  
Standard inductors and capacitors are25% of typical  
LM2575 values  
Thermal shutdown  
The MIC4575 is available in 3.3V, and 5V fixed output  
versions or a 1.23V to 20V adjustable output version. Both  
versions are capable of driving a 1A load with excellent  
line and load regulation.  
The feedback voltage is guaranteed to ±2% tolerance for  
adjustable versions, and the output voltage is guaranteed  
to ±3% for fixed versions, within specified voltages and  
load conditions. The oscillator frequency is guaranteed to  
±10%.  
In shutdown mode, the regulator draws less than 200µA  
standby current. The regulator performs cycle-by-cycle  
current limiting and thermal shutdown for protection under  
fault conditions.  
Overcurrent protection  
100% electrical thermal limit burn-in  
Applications  
This series of simple switch-mode regulators requires a  
minimum number of external components and can operate  
using a standard series of inductors. Frequency comp-  
ensation is provided internally.  
Simple high-efficiency step-down (buck) regulator  
Efficient pre-regulator for linear regulators  
On-card switching regulators  
Positive-to-negative converter (inverting buck-boost)  
Battery charger  
The MIC4575 is available in TO-220 (T) and TO-263 (U)  
packages for the industrial temperature range.  
Data sheets and support documentation can be found on  
Micrel’s web site at www.micrel.com.  
Negative boost converter  
Step-down 6V to 3.3V for Intel Pentium® and similar  
microprocessors  
___________________________________________________________________________________________________________  
Typical Application  
L1  
5.0V/1A  
Shutdown  
Enable  
5
2
4
SHDN  
MIC4575-5.0_T  
VIN FB  
SW  
68µH  
8V to 24V  
1
C2  
330µF  
16V  
C1  
150µF  
35V  
GND  
D1  
1N5819  
3
Fixed Regulator  
Adjustable Regulator  
Pentium is a registered trademark of Intel Corporation  
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com  
M9999-072909  
July 2009  
1

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