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MIC29312BU Datasheet

  • MIC29312BU

  • Micrel Semiconductor [3A Fast-Response LDO Regulator]

  • 171.45KB

  • MICREL   MICREL

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MIC29310/29312
Micrel
MIC29310/29312
3A Fast-Response LDO Regulator
General Description
The MIC29310 and MIC29312 are low cost versions of
MIC29300 family low-dropout (LDO) regulators. Manufac-
tured on Micrel鈥檚 proprietary Super beta PNP鈩?process, the
MIC29310/2 is a 3A LDO regulator with very low-dropout
voltage (600mV over the full load) and low ground current.
Along with a total accuracy of
卤2%
(over temperature, line
and load regulation) these regulators feature very fast tran-
sient recovery from input voltage surges and output load
current changes.
The MIC29310 is available in fixed 3.3V and 5V outputs
voltages; the MIC29312 has an adjustable output which can
be set by two external resistors to a voltage between 1.24V
to 15V. In addition, all versions are fully protected against
overcurrent faults, reversed input polarity, reversed lead
insertion, and overtemperature operation.
Features
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Low cost versions of MIC29300 family
Fast transient response
3A current over full temperature range
600mV dropout voltage at full load
Low ground current
Accurate 1% guaranteed tolerance
鈥淶ero鈥?current shutdown mode (MIC29312)
Fixed voltage and adjustable versions
Processor peripheral and I/O supplies
PC add-in cards
High-efficiency 鈥済reen鈥?computer systems
High-efficiency linear power supplies
High-efficiency switching supply post regulator
Battery-powered equipment
Applications
A TTL logic enable (EN) pin is available in the MIC29312 to
shutdown the regulator. When not used, the device can be
set to continuous operation by connecting EN to the input
(IN).
The MIC29310/2 is available in the standard 3- and 5-pin
TO-220 and TO-263 packages with an operating junction
temperature range of 0掳C to +125掳C.
For applications requiring even lower dropout
Ordering Information
voltage, input voltage greater than 16V, or an
Part Number
Voltage
error flag, see the MIC29300/29301/29302/
MIC29310-3.3BT
3.3V
29303.
MIC29310-3.3BU
MIC29310-5.0BT
MIC29310-5.0BU
MIC29312BT
MIC29312BU
3.3V
5.0V
5.0V
Adj.
Adj.
Junction Temp. Range
0掳C to +125掳C
0掳C to +125掳C
0掳C to +125掳C
0掳C to +125掳C
0掳C to +125掳C
0掳C to +125掳C
Package
TO-220-3
TO-263-3
TO-220-3
TO-263-3
TO-220-5
TO-263-5
Typical Application
MIC29312
On
Off
EN
IN
GND
OUT
R1*
ADJ
R2*
V
OUT
V
IN
IN
OUT
GND
V
OUT
V
IN
V
OUT
= 1. 240
R1
+1
R2
* For best performance, total series resistance
(R1 + R2) should be small enough to pass
the minimum regulator load current of 10mA.
Fixed Regulator Configuration
Adjustable Regulator Configuration
Micrel, Inc. 鈥?1849 Fortune Drive 鈥?San Jose, CA 95131 鈥?USA 鈥?tel + 1 (408) 944-0800 鈥?fax + 1 (408) 944-0970 鈥?http://www.micrel.com
July 1999
1
MIC29310/29312

MIC29312BU 产品属性

  • 50

  • 集成电路 (IC)

  • PMIC - 稳压器 - 线性

  • -

  • 正，可调式

  • 1.24 V ~ 15 V

  • 2.3 V ~ 16 V

  • 0.6V @ 3A

  • 1

  • 3A

  • 3A

  • 0°C ~ 125°C

  • 表面贴装

  • TO-263-6，D²Pak（5 引线+接片），TO-263BA

  • TO-263-5

  • 管件

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