参数资料
型号: MIC4575-5.0WU TR
厂商: Micrel Inc
文件页数: 1/15页
文件大小: 0K
描述: IC REG BUCK 5V 1A TO263-5
标准包装: 1
类型: 降压(降压)
输出类型: 固定
输出数: 1
输出电压: 5V
输入电压: 4 V ~ 24 V
频率 - 开关: 200kHz
电流 - 输出: 1A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: TO-263-6,D²Pak(5 引线+接片),TO-263BA
包装: 标准包装
供应商设备封装: TO-263-5
产品目录页面: 1093 (CN2011-ZH PDF)
其它名称: 576-1549-6
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.
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
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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)
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.
This series of simple switch-mode regulators requires a
? Standard inductors and capacitors are25% of typical
LM2575 values
? Thermal shutdown
? Overcurrent protection
? 100% electrical thermal limit burn-in
Applications
minimum number of external components and can operate
using a standard series of inductors. Frequency comp-
ensation is provided internally.
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.
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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
Negative boost converter
Step-down 6V to 3.3V for Intel Pentium ? and similar
microprocessors
___________________________________________________________________________________________________________
Typical Application
Shutdown
Enable
5
SHDN
SW
2
L1
68μH
5.0V/1A
8V to 24V
C1
150μF
35V
1
MIC4575-5.0_T
V IN FB
GND
3
4
D1
1N5819
C2
330μF
16V
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
July 2009
1
M9999-072909
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MIC4575BU 功能描述:IC REG BUCK ADJ 1A TO263-5 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:20 系列:SIMPLE SWITCHER® 类型:降压(降压) 输出类型:固定 输出数:1 输出电压:12V 输入电压:4 V ~ 60 V PWM 型:电压模式 频率 - 开关:52kHz 电流 - 输出:1A 同步整流器:无 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:16-DIP(0.300",7.62mm) 包装:管件 供应商设备封装:16-DIP 其它名称:*LM2575HVN-12LM2575HVN-12
MIC4575BU TR 功能描述:IC REG BUCK ADJ 1A TO263-5 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:20 系列:SIMPLE SWITCHER® 类型:降压(降压) 输出类型:固定 输出数:1 输出电压:12V 输入电压:4 V ~ 60 V PWM 型:电压模式 频率 - 开关:52kHz 电流 - 输出:1A 同步整流器:无 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:16-DIP(0.300",7.62mm) 包装:管件 供应商设备封装:16-DIP 其它名称:*LM2575HVN-12LM2575HVN-12
MIC4575WT 功能描述:直流/直流开关调节器 200kHz 1.0A Step-down Regulator (ROHS Compliant) RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5
MIC4575WU 功能描述:直流/直流开关调节器 200kHz 1.0A Step-down Regulator (ROHS Compliant) RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5