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MIC4575BT PDF预览

MIC4575BT

更新时间: 2024-09-30 22:05:07
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信息通信管理局域网
页数 文件大小 规格书
12页 216K
描述
200kHz Simple 1A Buck Voltage Regulator

MIC4575BT 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
包装说明:TO-220, 5 PINReach Compliance Code:not_compliant
风险等级:5.68Is Samacsys:N
其他特性:ALSO OPERATES IN ADJUSTABLE MODE FROM 1.23 TO 20 V模拟集成电路 - 其他类型:SWITCHING REGULATOR
控制模式:VOLTAGE-MODE控制技术:PULSE WIDTH MODULATION
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-XSFM-T5
JESD-609代码:e0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:1.23 V封装主体材料:UNSPECIFIED
封装代码:TO-220封装等效代码:SIP5,.1,67TB
封装形状:RECTANGULAR封装形式:FLANGE MOUNT
峰值回流温度(摄氏度):240认证状态:Not Qualified
子类别:Switching Regulator or Controllers最大供电电流 (Isup):10 mA
表面贴装:NO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:Tin/Lead (Sn85Pb15)
端子形式:THROUGH-HOLE端子节距:1.7 mm
端子位置:SINGLE处于峰值回流温度下的最长时间:30
Base Number Matches:1

MIC4575BT 数据手册

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MIC4575  
200kHz Simple 1A Buck Voltage 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 are  
25% of typical LM2575 values.  
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%.  
• Thermal shutdown  
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  
• Simple high-efficiency step-down (buck) regulator  
• Efficient preregulator for linear regulators  
• On-card switching regulators  
• Positive-to-negative converter (inverting buck-boost)  
• Battery Charger  
• Negative boost converter  
• Step-down 6V to 3.3V for Intel Pentium™  
and similar microprocessors  
This series of simple switch-mode regulators requires a  
minimum number of external components and can operate  
using a standard series of inductors. Frequency compensa-  
tion is provided internally.  
The MIC4575 is available in TO-220 (T) and TO-263 (U)  
packages for the industrial temperature range.  
Typical Applications  
L1  
5.0V/1A  
Shutdown  
Enable  
5
1
2
SHDN  
SW  
68µH  
MIC4575-5.0BT  
VIN  
8V to 24V  
4
C2  
330µF  
16V  
FB  
C1  
150µF  
35V  
GND  
D1  
3
1N5819  
Fixed Regulator  
L1  
3.6V/1A  
5
2
Shutdown  
Enable  
SHDN  
SW  
R2  
68µH  
C3  
3300pF  
2.37k  
1%  
MIC4575BU  
1
4
6V to 24V  
C2  
330µF  
6.3V  
VIN  
FB  
C1  
22µF  
35V  
GND  
R1  
1.24k  
1%  
D1  
3
MBRS130LT3  
Adjustable Regulator  
4-106  
April 1998•  

MIC4575BT 替代型号

型号 品牌 替代类型 描述 数据表
LM2575T-ADJG ONSEMI

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