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MIC29310-3.3BT 参数 Datasheet PDF下载

MIC29310-3.3BT图片预览
型号: MIC29310-3.3BT
PDF下载: 下载PDF文件 查看货源
内容描述: 3A快速响应LDO稳压器 [3A Fast-Response LDO Regulator]
分类和应用: 线性稳压器IC调节器电源电路输出元件局域网
文件页数/大小: 12 页 / 171 K
品牌: MICREL [ MICREL SEMICONDUCTOR ]
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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’s proprietary Super beta PNP™ 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
±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
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
“Zero” current shutdown mode (MIC29312)
Fixed voltage and adjustable versions
Processor peripheral and I/O supplies
PC add-in cards
High-efficiency “green” 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°C to +125°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°C to +125°C
0°C to +125°C
0°C to +125°C
0°C to +125°C
0°C to +125°C
0°C to +125°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. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
July 1999
1
MIC29310/29312