Datasheet > MIC4575

MIC4575

更新时间： 2024-12-01 14:55:11

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
20页	677K
描述
The MIC4575 is a series of easy to use fixed and adjustable BiCMOS step-down (buck) switch-mode

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MIC4575 数据手册

MIC4575

1A, 200 kHz Buck Regulator

Features

General Description

• Fixed 200 kHz Operation

The MIC4575 is a series of easy to use fixed and

adjustable BiCMOS step-down (buck) switch-mode

voltage regulators. The 200 kHz MIC4575 duplicates

the pinout and function of the 52 kHz LM2575. The

higher switching frequency may allow up to a 2:1

reduction in output filter inductor size.

• 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

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.

• Guaranteed 1A Switch Current

• Wide 4V to 24V Input Voltage Range

• Wide 1.23V to 20V Output Voltage Range

• Requires Minimum External Components

• <200 µA Typical Shutdown Mode

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%.

• 75% Efficiency (Adjustable Version >75% typ.)

• Standard Inductors and Capacitors are 25% of

Typical LM2575 Values

In shutdown mode, the regulator draws less than

200 μA standby current. The regulator performs

cycle-by-cycle current limiting and thermal shutdown

for protection under fault conditions.

• Thermal Shutdown

• Overcurrent Protection

• 100% Electrical Thermal Limit Burn-In

This series of simple switch-mode regulators requires

a minimum number of external components and can

Applications

• Simple High-Efficiency Step-Down (Buck)

Regulator

operate using

a standard series of inductors.

Frequency compensation is provided internally.

• Efficient Pre-Regulator for Linear Regulators

• On-Card Switching Regulators

The MIC4575 is available in TO-220 (T) and DDPAK

(U) packages for the industrial temperature range.

• Positive-to-Negative Converter (Inverting

Buck-Boost)

• Battery Charger

• Negative Boost Converter

• Step-Down 6V to 3.3V for Intel Pentium and

Similar Microprocessors

Package Types

MIC4575

5-Lead TO-220 (T)

(Top View)

MIC4575

5-Lead DDPAK (U)

(Top View)

SHDN

GND

VIN

SHDN

GND

VIN

 2020 Microchip Technology Inc.

DS20006464A-page 1

12 3 4 5 6 7...20

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与MIC4575相关器件

型号	品牌	获取价格	描述	数据表
MIC4575_09	MICREL	获取价格	200kHz Simple 1A Buck Regulator
MIC4575-3.3BT	MICREL	获取价格	200kHz Simple 1A Buck Voltage Regulator
MIC4575-3.3BU	MICREL	获取价格	200kHz Simple 1A Buck Voltage Regulator
MIC4575-3.3BUT&R	MICROCHIP	获取价格	Switching Regulator, Voltage-mode, 3.2A, 220kHz Switching Freq-Max, BICMOS, PSSO5, TO-263,
MIC4575-3.3WT	MICREL	获取价格	200kHz Simple 1A Buck Regulator
MIC4575-3.3WU	MICREL	获取价格	200kHz Simple 1A Buck Regulator
MIC4575-3.3WUTR	MICROCHIP	获取价格	3.2A SWITCHING REGULATOR, 220kHz SWITCHING FREQ-MAX, PSSO5, ROHS COMPLIANT, TO-263, 5 PIN
MIC4575-5.0BT	MICREL	获取价格	200kHz Simple 1A Buck Voltage Regulator
MIC4575-5.0BU	MICREL	获取价格	200kHz Simple 1A Buck Voltage Regulator
MIC4575-5.0BUT&R	MICROCHIP	获取价格	Switching Regulator, Voltage-mode, 3.2A, 220kHz Switching Freq-Max, BICMOS, PSSO5, TO-263,

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