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參數資料
| 型號： | 12B1621 |
| 英文描述： | IC |
| 中文描述： | 集成電路 |
| 文件頁數： | 1/20頁 |
| 文件大小： | 132K |
| 代理商： | 12B1621 |
March 2000
1
MIC29150/29300/29500/29750
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 eta 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
Pinout
On all devices, the Tab is grounded.
MIC29150/29300/29500/29750 Three Terminal
Devices:
Pin 1 = Input, 2 = Ground, 3 = Output
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
1 2 3
1 2 3 4 5
MIC29151/29152/29153BT
MIC29301/29302/29303BT
MIC29501/29502/29503BT
MIC29751/29752BWT
MIC29150/29300/
29500BT and
MIC29750BWT
Pin Configuration
1 2 3
MIC29150/29300BU
MIC29151/29152/29153BU
MIC29301/29302/29303BU
MIC29501/29502/29503BU
1 2 3 4 5
Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
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