MIC29150 Datasheet, PDF (1/20 Pages) Micrel Semiconductor – High-Current Low-Dropout Regulators

MIC29150/29300/29500/29750
Micrel
MIC29150/29300/29500/29750 Series
High-Current Low-Dropout Regulators
General Description
The MIC29150/29300/29500/29750 are high current, high
accuracy, low-dropout voltage regulators. Using Micrel's
proprietary Super ßeta PNP™ process with a PNP pass
element, these regulators feature 300mV to 370mV (full load)
dropout voltages and very low ground current. Designed for
high current loads, these devices also find applications in
lower current, extremely low dropout-critical systems, where
their tiny dropout voltage and ground current values are
important attributes.
The MIC29150/29300/29500/29750 are fully protected against
overcurrent faults, reversed input polarity, reversed lead
insertion, overtemperature operation, and positive and nega-
tive transient voltage spikes. Five pin fixed voltage versions
feature logic level ON/OFF control and an error flag which
signals whenever the output falls out of regulation. Flagged
states include low input voltage (dropout), output current
limit, overtemperature shutdown, and extremely high voltage
spikes on the input.
On the MIC29xx1 and MIC29xx2, the ENABLE pin may be
tied to V_IN if it is not required for ON/OFF control. The
MIC29150/29300/29500 are available in 3- and 5-pin TO-220
and surface mount TO-263 packages. The MIC29750 7.5A
regulators are available in 3- and 5-pin TO-247 packages.
Features
• High Current Capability
MIC29150/29151/29152/29153 ................................ 1.5A
MIC29300/29301/29302/29303 ................................... 3A
MIC29500/29501/29502/29503 ................................... 5A
MIC29750/29751/29752 ........................................... 7.5A
• Low-Dropout Voltage ....................... 350mV at Full Load
• Low Ground Current
• Accurate 1% Guaranteed Tolerance
• Extremely Fast Transient Response
• Reverse-battery and “Load Dump” Protection
• Zero-Current Shutdown Mode (5-Pin versions)
• Error Flag Signals Output Out-of-Regulation
(5-Pin versions)
• Also Characterized For Smaller Loads With Industry-
Leading Performance Specifications
• Fixed Voltage and Adjustable Versions
Applications
• Battery Powered Equipment
• High-Efficiency “Green” Computer Systems
• Automotive Electronics
• High-Efficiency Linear Power Supplies
• High-Efficiency Post-Regulator For Switching Supply
Pin Configuration
123
MIC29150/29300/
29500BT and
MIC29750BWT
123
MIC29150/29300BU
1 23 4 5
MIC29151/29152/29153BU
MIC29301/29302/29303BU
MIC29501/29502/29503BU
Pinout On all devices, the Tab is grounded.
MIC29150/29300/29500/29750 Three Terminal
Devices:
Pin 1 = Input, 2 = Ground, 3 = Output
1 23 45
MIC29151/29152/29153BT
MIC29301/29302/29303BT
MIC29501/29502/29503BT
MIC29751/29752BWT
MIC29151/29301/29501/29751 Five Terminal
Fixed Voltage Devices:
Pin 1 = Enable, 2 = Input, 3 = Ground, 4 = Output,
5 = Flag
MIC29152/29302/29502/29752 Adjustable with
ON/OFF Control
Pin 1 = Enable, 2 = Input, 3 = Ground, 4 = Output,
5 = Adjust
MIC29153/29303/29503 Adjustable with Flag
Pin 1 = Flag, 2 = Input, 3 = Ground, 4 = Output,
5 = Adjust
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 [phone] • fax + 1 [phone] • http://www.micrel.com
March 2000
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MIC29150/29300/29500/29750