MIC29302HWU Datasheet, PDF (1/10 Pages) Micrel Semiconductor – High-Current Low-Dropout Regulators

MIC29302HWU
High-Current Low-Dropout Regulators
General Description
The MIC29302HWU is a high current, high accuracy, low-
dropout voltage regulators. Using Micrel's proprietary
Super βeta PNP^® process with a PNP pass element, these
regulators feature 350mV to 425mV (full load) typical
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 MIC29302HWU is fully protected against overcurrent
faults, reversed input polarity, reversed lead insertion,
over-temperature operation, and positive and negative
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, over-temperature shutdown, and extremely
high voltage spikes on the input.
The ENABLE pin may be tied to VIN if it is not required for
ON/OFF control. The MIC29302HWU is available in a 5-
pin surface mount TO-263 (D²Pak) package. For
applications with input voltage 6V or below, see MIC37xxx
LDOs.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
 3A current capability
 Low-dropout voltage
 Low ground current
 Accurate 1% guaranteed tolerance
 Extremely fast transient response
 Reverse-battery and “Load Dump” protection
 Zero-current shutdown mode
 Error flag signals output out-of-regulation
 Also characterized for smaller loads with industry-
leading performance specifications
Applications
 Battery-powered equipment
 High-efficiency “Green” computer systems
 Automotive electronics
 High-efficiency linear power supplies
 High-efficiency post-regulator for switching supply
Typical Application
Super βeta PNP is a trademark of Micrel, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
November 11, 2013
Revision 1.0