MIC2920A/29201/29202/29204
Micrel
MIC2920A/29201/29202/29204
400mA Low-Dropout Voltage Regulator
General Description
The MIC2920A family are 鈥渂ulletproof,鈥?efficient voltage
regulators with very low dropout voltage (typically 40mV at
light loads and 370mV at 250mA), and very low quiescent
current (140碌A(chǔ) typical). The quiescent current of the MIC2920A
increases only slightly in dropout, prolonging battery life. Key
MIC2920A features include protection against reversed battery,
fold-back current limiting, and automotive 鈥渓oad dump鈥?/div>
protection (60V positive transient).
The MIC2920 is available in several configurations. The
MIC2920A-x.x devices are three pin fixed voltage regulators
available in 3.3V, 4.85V, 5V, and 12V outputs. The MIC29201
is a fixed regulator offering a logic compatible ON/OFF
(shutdown) input and an error flag output. This flag may also
be used as a power-on reset signal. A logic-compatible
shutdown input is provided on the adjustable MIC29202
which allows the regulator to be switched on and off. The
MIC29204 8-pin SOIC adjustable regulator includes both
shutdown and error flag pins and may be pin-strapped for 5V
output or programmed from 1.24V to 26V using two external
resistors.
Features
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High output voltage accuracy
Guaranteed 400mA output
Low quiescent current
Low dropout voltage
Extremely tight load and line regulation
Very low temperature coefficient
Current and thermal limiting
Input withstands 鈥?0V reverse battery and
60V positive transients
Error flag warns of output dropout
Logic-controlled electronic shutdown
Output programmable from 1.24V to 26V
(MIC29202/MIC29204)
Available in TO-220, TO-220-5, and surface-mount
TO-263-5, SOT-223, and SO-8 packages.
Battery-powered equipment
Cellular telephones
Laptop, notebook, and palmtop computers
PCMCIA V
CC
and V
PP
regulation/switching
Bar code scanners
Automotive electronics
SMPS post-regulators
Voltage reference
High-efficiency linear power supplies
3
Applications
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Pin Configuration
TAB
OUTPUT 1
SENSE 2
SHUTDOWN 3
GROUND 4
8
7
6
5
INPUT
NC
NC
ERROR
1
2
3
MIC29201-3.3BM (SO-8)
OUTPUT 1
SENSE 2
SHUTDOWN 3
GROUND 4
8
7
6
5
INPUT
ADJUST
5V TAP
ERROR
INPUT
OUTPUT
GROUND
MIC2920A-x.xBS
(SOT-223)
MIC29204BM (SO-8)
5-Lead Package Pinouts
MIC29201 MIC29202
1) Error
Adjust
2) Input
Shutdown
3) Ground
Ground
4) Output
Input
5) Shutdown
Output
1
2
3
1 2 3 4 5
INPUT OUTPUT
GROUND
1 2 3 4 5
MIC29201/29202BU
(TO-263-5)
MIC2920A-xxBT
(TO-220)
MIC29201/29202BT
(TO-220-5)
Tab is Ground on SOT-223, TO-220, and TO-263 packages.
January 1998
3-9
MIC29201-12BT PDF文件相關(guān)型號
MIC29201-5.0BT,MIC29204BM,MIC2920A-4.8BT
MIC29201-12BT 產(chǎn)品屬性
50
集成電路 (IC)
PMIC - 穩(wěn)壓器 - 線性
-
正，固定式
12V
最高 26V
0.4V @ 400mA
1
400mA
-40°C ~ 125°C
通孔
TO-220-5
TO-220-5
管件
MIC29201-12BT相關(guān)型號PDF文件下載
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