Datasheet > MIC2251

MIC2251

更新时间： 2024-10-02 14:54:59

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
22页	3991K
描述
The MIC2251 is a general purpose DC/DC boost switching regulator that features low noise, EMI re

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MIC2251 数据手册

MIC2251

High-Efficiency Low EMI Boost Regulator

Features

General Description

• Over 80% Efficient at 1 mA Load

• 2.5V to 5.5V Input Voltage Range

• Output Voltage Adjustable to 37V

• 1.6A Switch Current (typ.)

The MIC2251 is a general purpose DC/DC boost

switching regulator that features low noise, EMI

reduction circuitry, and high efficiency across a wide

output current range.

The MIC2251 is optimized for noise-sensitive hand

held battery powered applications. A proprietary control

method allows low ripple across the output voltage and

• 52 µA (typ.) Quiescent Current

• Constant Peak Current Control Reduces Output

Ripple

current ranges. The MIC2251 incorporates

• EMI Reduction Circuitry

pseudo-random dithering function to reduce EMI levels

up to 10 dB enabled by the DITH pin.

• Stable with Small Ceramic Capacitors

• <1 µA Shutdown Current

The MIC2251 is designed for use with inductor values

from 4.7 µH to 22 µH, and is stable with ceramic

capacitors from 1 µF to 22 µF.

• UVLO and Thermal Shutdown

• 8-Pin 2 mm x 2 mm Leadless DFN Package

(MIC2251)

The MIC2251 attains a high peak efficiency up to 90%

at 100 mA and excellent light load efficiency of 80% at

1 mA.

• 5-Pin Thin SOT-23 Package (MIC2251-1 &

MIC2251-2) Pin to Pin Compatible with

MCP1661/3 (1.2A/1.8A Switch Current)

The MIC2251-1 is available in a 5-pin Thin SOT-23

package with dithering disabled, while the MIC2251-2

is available in a 5-pin Thin SOT-23 package with

dithering enabled.

• –40°C to +125°C Junction Temperature Range

Applications

• LCD/OLED Display Bias Supply

The MIC2251 is available in a 8-pin 2 mm x 2 mm DFN

leadless package option with an operating junction

temperature range of –40°C to +125°C.

• CCD Bias Supply

• Mobile Phones, PDA, Media Players, GPS PND

• Haptic Displays

• Local 5V, 15V, 24V Rail

Package Types

MIC2251

8-Pin 2 mm x 2 mm DFN (ML)

(Top View)

MIC2251

5-Pin SOT-23 (D5)

(Top View)

 2021 Microchip Technology Inc.

DS20006487A-page 1

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与MIC2251相关器件

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MIC2251_1105	MICREL	获取价格	High-Efficiency Low EMI Boost Regulator
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MIC2251YML	MICREL	获取价格	High-Efficiency Low EMI Boost Regulator
MIC2253	MICREL	获取价格	3.5A 1MHz High Efficiency Boost Regulator with OVP and Softstart
MIC2253	MICROCHIP	获取价格	The MIC2253 is a high power density 1MHz PWM DC/DC boost regulator. The 3.5A minimum swi
MIC2253_11	MICREL	获取价格	3.5A 1MHz High Efficiency Boost Regulator with OVP and Softstart
MIC2253-06YML	MICREL	获取价格	3.5A 1MHz High Efficiency Boost Regulator with OVP and Softstart
MIC2253-06YML-TR	MICROCHIP	获取价格	8A SWITCHING REGULATOR, 1200kHz SWITCHING FREQ-MAX, PDSO12