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MIC2940A-3.3WU

更新时间： 2024-11-22 10:57:11

品牌	Logo	应用领域
麦瑞 - MICREL		稳压器调节器输出元件
页数	文件大小	规格书
11页	325K
描述
1.2A Low-Dropout Voltage Regulator

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MIC2940A-3.3WU 数据手册

MIC2940A/2941A

1.2A Low-Dropout Voltage Regulator

General Description

Features

The MIC2940A and MIC2941A are “bulletproof” efficient

voltage regulators with very low dropout voltage (typically

40mV at light loads and 350mV at 1A), and low quiescent

current (240µA typical). The quiescent current of the

MIC2940A increases only slightly in dropout, thus

prolonging battery life. Key MIC2940A features include

protection against reversed battery, fold-back current

limiting, and automotive “load dump” protection (60V

positive transient).

• High output voltage accuracy

• Guaranteed 1.25A output

• Low quiescent current

• Low dropout voltage

• Extremely tight load and line regulation

• Very low temperature coefﬁcient

• Current and thermal limiting

• Input can withstand –20V reverse battery and +60V

positive transients

• Logic-controlled electronic shutdown

• Output programmable from 1.24V to 26V(MIC2941A)

• Available in TO-220, TO-263, TO-220-5, and TO-263-5

packages.

The MIC2940 is available in both ﬁxed voltage (3.3V, 5V,

and 12V) and adjustable voltage conﬁgurations. The

MIC2940A-xx devices are three pin, ﬁxed voltage

regulators. A logic-compatible shutdown input is provided

on the adjustable MIC2941A, which enables the regulator

to be switched on and off.

Data sheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

Applications

• Battery powered equipment

• Cellular telephones

• Laptop, notebook, and palmtop computers

• PCMCIA VCC and VPP regulation/switching

• Bar code scanners

• Automotive electronics

• SMPS post-regulator/ DC-to-DC modules

• Voltage reference

• High efficiency linear power supplies

___________________________________________________________________________________________________________

Pin Configuration

TO-263-5

(MIC2941ABU/WU)

TO-263-3

(MIC2940A-xxBU/WU)

MIC2941A Pinout

MIC2940A Pinout

1) Input

2) Ground

3) Output

1) Adjust

2) Shutdown

3) Ground

4) Input

TO-220-3

(MIC2940A-xxBT/WT)

TO-220-5

(MIC2941ABT/WT)

5) Output

The TAB is Ground on TO-220 and TO-263 packages

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

M9999-071307

July 2007

12 3 4 5 6 7...11

中文翻译

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与MIC2940A-3.3WU相关器件

型号	品牌	获取价格	描述	数据表
MIC2940A-4.8BK	MICROCHIP	获取价格	4.8V FIXED POSITIVE LDO REGULATOR, 0.6V DROPOUT, MBFM2
MIC2940A-4.8BU	MICROCHIP	获取价格	4.8V FIXED POSITIVE LDO REGULATOR, 0.6V DROPOUT, PSSO3
MIC2940A-5.0BT	MICREL	获取价格	1.25A Low-Dropout Voltage Regulator Preliminary Information
MIC2940A-5.0BTTR	MICROCHIP	获取价格	Regulator, 1 Output, 5V1, BIPolar
MIC2940A-5.0BU	MICREL	获取价格	1.25A Low-Dropout Voltage Regulator Preliminary Information
MIC2940A-5.0WT	MICREL	获取价格	1.2A Low-Dropout Voltage Regulator
MIC2940A-5.0WT-TR	MICROCHIP	获取价格	FIXED POSITIVE LDO REGULATOR
MIC2940A-5.0WU	MICREL	获取价格	1.2A Low-Dropout Voltage Regulator
MIC2940A-5.0WUTR	MICREL	获取价格	5V FIXED POSITIVE LDO REGULATOR, 0.6V DROPOUT, PSSO3, ROHS COMPLIANT, TO-263, 3 PIN
MIC2941A	MICREL	获取价格	1.2A Low-Dropout Voltage Regulator

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