MIC29372WT Micrel Inc, MIC29372WT Datasheet

IC REG LDO 750MA ADJ TO220-5

MIC29372WT

Manufacturer Part Number
MIC29372WT
Description
IC REG LDO 750MA ADJ TO220-5
Manufacturer
Micrel Inc
Datasheet

Specifications of MIC29372WT

Regulator Topology
Positive Adjustable
Voltage - Output
1.24 ~ 26 V
Voltage - Input
2 ~ 26 V
Voltage - Dropout (typical)
0.37V @ 750mA
Number Of Regulators
1
Current - Output
750mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-220-5 (Straight Leads)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Other names
576-1129
MIC2937A/29371/29372
General Description
The MIC2937A family are “bulletproof” efficient voltage regu-
lators with very low dropout voltage (typically 40mV at light
loads and 300mV at 500mA), and very low quiescent current
(160µA typical). The quiescent current of the MIC2937A in-
creases only slightly in dropout, thus prolonging battery life.
Key MIC2937A features include protection against reversed
battery, fold-back current limiting, and automotive “load dump”
protection (60V positive transient).
The MIC2937 is available in several configurations. The
MIC2937A-xx devices are three pin fixed voltage regulators
with 3.3V, 5V, and 12V outputs available. The MIC29371 is
a fixed regulator offering logic compatible ON/OFF switching
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 MIC29372, which enables the
regulator to be switched on and off.
Pin Configuration
Five Lead Package Pin Functions:
1)
2)
3)
4)
5)
The TAB is Ground on the TO-220 and TO-263 packages.
May 2006
INPUT
MIC29371
Error
Input
Ground
Output
Shutdown
(MIC2937A-xxBU/WU)
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
TO-263 Package
GROUND OUTPUT
1
2
MIC29372
Adjust
Shutdown
Ground
Input
Output
3
(MIC29371/29372BU/WU)
TO-263-5 Package
1 2 3 4 5
1
Features
Applications
750mA Low-Dropout Voltage Regulator
High output voltage accuracy
Guaranteed 750mA 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 posi-
tive transients
Error flag warns of output dropout
Logic-controlled electronic shutdown
Output programmable from 1.24V to 26V(MIC29372)
Available in TO-220, TO-263, TO-220-5, and TO-263-5
packages.
Battery Powered Equipment
Cellular Telephones
Laptop, Notebook, and Palmtop Computers
PCMCIA V
Bar Code Scanners
Automotive Electronics
SMPS Post-Regulator/ DC to DC Modules
High Efficiency Linear Power Supplies
INPUT
MIC2937A/29371/29372
(MIC2937A-xxBT/WT)
TO-220 Package
GROUND OUTPUT
1
CC
2
and V
3
PP
Regulation/Switching
(MIC29371/29372BT/WT)
MIC2937A/29371/29372
TO-220-5 Package
1 2 3 4 5
Micrel, Inc.

Related parts for MIC29372WT

MIC29372WT Summary of contents

Page 1

MIC2937A/29371/29372 General Description The MIC2937A family are “bulletproof” efficient voltage regu- lators with very low dropout voltage (typically 40mV at light loads and 300mV at 500mA), and very low quiescent current (160µA typical). The quiescent current of the MIC2937A in- ...

Page 2

... MIC29371-3.3WT MIC29371-5.0BU MIC29371-5.0WU MIC29371-5.0BT MIC29371-5.0WT MIC29371-12BU MIC29371-12WU MIC29371-12BT MIC29371-12WT MIC29372BU MIC29372WU MIC29372BT MIC29372WT * RoHS compliant with ‘high-melting solder’ exemption. MIC2937A/29371/29372 Voltage Junction Temp. Range 3.3V –40ºC to +125ºC 3.3V –40ºC to +125ºC 5.0V –40ºC to +125ºC 5.0V – ...

Page 3

MIC2937A/29371/29372 Absolute Maximum Ratings Power Dissipation (Note 1)...............................................Internally Limited Lead Temperature (Soldering, 5 seconds).........................................260°C Storage Temperature Range.............................................–65°C to +150°C Operating Junction Temperature Range ..........................–40°C to +125°C TO-220 θ .....................................................................................2.5°C/W JC TO-263 θ .....................................................................................2.5°C/W JC Input Supply Voltage..............................................................–20V to +60V Electrical ...

Page 4

MIC2937A/29371/29372 Electrical Characteristics MIC29372 Parameter Conditions Reference Voltage Reference Voltage (Note 8) Adjust Pin Bias Current Reference Voltage (Note 7) Temperature Coefficient Adjust Pin Bias Current Temperature Coefficient MIC29371 Error Comparator Output Leakage V = 26V OH Current Output Low ...

Page 5

MIC2937A/29371/29372 Note 1: Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the device outside of its rated operating conditions. The maximum allowable power dissipation is a function of ...

Page 6

MIC2937A/29371/29372 Typical Characteristics Dropout Voltage vs. Output Current 500 400 300 200 100 0 0 200 400 600 800 OUTPUT CURRENT (mA) Ground Current vs. Output Current 0 100 1000 OUTPUT CURRENT (mA) Ground Current ...

Page 7

MIC2937A/29371/29372 MIC29371/2 Shutdown Current vs. Temperaure 125 100 -60 - 120 150 TEMPERATURE ( °C) MIC29372/3 Adjust Pin Current vs. Temperature ...

Page 8

MIC2937A/29371/29372 Applications Information External Capacitors A 10µF (or greater) capacitor is required between the MIC2937A output and ground to prevent oscillations due to instability. Most types of tantalum or aluminum electrolytics will be adequate; film types will work, but are ...

Page 9

MIC2937A/29371/29372 with a bypass capacitor across R , since it reduces the high 1 frequency gain from 4 to unity. Pick C ≅ BYPASS π about 0.01µF. When doing this, the output capacitor must be increased ...

Page 10

MIC2937A/29371/29372 Package Information MIC2937A/29371/29372 3-Pin TO-263 (U) 3-Pin TO-220 (T) 10 Micrel, Inc. May 2006 ...

Page 11

MIC2937A/29371/29372 4 θ May 2006 1 θ 2 θ 1 θ 1 θ 3 θ 2 θ 3 θ 4 θ 5-Pin TO-263 (U) 5-Pin TO-220 (T) 11 Micrel, Inc. MIC2937A/29371/29372 ...

Page 12

... MIC2937A/29371/29372 MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. ...

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