Datasheet > MIC29311_07

MIC29311_07

更新时间： 2024-11-22 10:57:11

品牌	Logo	应用领域
麦瑞 - MICREL		稳压器
页数	文件大小	规格书
11页	341K
描述
3A Fast-Response LDO Regulator for USB

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MIC29311_07 数据手册

MIC29311

3A Fast-Response LDO Regulator for

USB

General Description

Features

The MIC29311 is a 3A, fast response, low-dropout (LDO)

voltage regulator. Using Micrel’s proprietary Super βeta

PNP™ process, the MIC29311 offers exceptional dropout

(600mV at 3A) and low ground current (60mA at 3A). Fast

transient response allows it to recover quickly from large

load changes while maintaining a steady output. The

device can be sent into a “zero-current” off mode when the

TTL compatible enable is brought low.

• Fast transient response

• 3A output current over full temperature range

• 600mV dropout voltage at full load

• Low ground current

• 3% total accuracy

• “Zero” off-mode current

• Thermal Shutdown

Designed specifically for Universal Serial Bus (USB)

applications, the MIC29311 works with USB power

switches to provide an economical solution for self-

powered hubs. The 5.1V output voltage is optimized to

work with lower-cost high on-resistance USB power

switches (300mΩ) to provide a minimum of 4.75V at

500mA to downstream ports. Used with MIC2527 quad

USB power switches, the MIC29311 can power up to 6

downstream ports.

• Current Limiting

• Reversed battery protection

• Fixed 5.1V Output

Applications

• Self-powered USB hubs

• USB power switching

Features of the MIC29311 include thermal shutdown,

current limit, reversed-battery and reversed-lead insertion

protection. An overvoltage clamp is available to maintain a

safe output when the input voltage exceeds 8V. An error

flag is also available to indicate of the output falls out of

regulation, or when an overcurrent condition occurs.

• High-efficiency linear power supplies

• High-efficiency switching supply post-regulator

The MIC29311 is available in a 5-pin TO-220 or TO-263

package with a fixed 5.1V output voltage.

For other high current, low-dropout voltage regulators,

please see the MIC29150/300/500/750 and the MIC29310,

MIC29510, MIC29710.

Data sheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

Ordering Information

Part Number

Voltage

Temperature Range

Package

Standard

RoHS Compliant*

MIC29311-5.1BT

MIC29311-5.1WT

5.1V

0° to +125°C

TO-220-5

* RoHs compliant with ‘high-melting solder’ exemption.

Super ßeta PNP is a trademarks of Micrel, Inc.

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

M9999-090507

September 2007

12 3 4 5 6 7...11

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与MIC29311_07相关器件

型号	品牌	获取价格	描述	数据表
MIC29311-5.1BT	MICREL	获取价格	3A Fast-Response LDO Regulator for USB Preliminary Information
MIC29311-5.1BU	MICREL	获取价格	3A Fast-Response LDO Regulator for USB Preliminary Information
MIC29311-5.1WT	MICREL	获取价格	3A Fast-Response LDO Regulator for USB
MIC29311-5.1WT	MICROCHIP	获取价格	Fixed Positive LDO Regulator, 5.1V, 1V Dropout, BIPolar, ROHS COMPLIANT, TO-220, 5 PIN
MIC29311-5.1WU	MICROCHIP	获取价格	5.1V FIXED POSITIVE LDO REGULATOR, 1V DROPOUT, PSSO5
MIC29312	MICREL	获取价格	3A Fast-Response LDO Regulator
MIC29312	MICROCHIP	获取价格	The MIC29310 and MIC29312 are low cost versions of MIC29300 family low-dropout (LDO) regul
MIC29312BT	MICREL	获取价格	3A Fast-Response LDO Regulator
MIC29312BU	MICREL	获取价格	3A Fast-Response LDO Regulator
MIC29312BU	ROCHESTER	获取价格	1.24 V-15V ADJUSTABLE POSITIVE LDO REGULATOR, 1V DROPOUT, PSSO5, TO-263, 5 PIN

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