MIC37153 Datasheet PDF - MICREL

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MIC37153
MICREL

Part Number MIC37153
Description 1.5A / Low Voltage uCap LDO Regulator
Page 13 Pages


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MIC37150/51/52/53
1.5A, Low Voltage µCap LDO Regulator
General Description
The Micrel MIC37150/51/52/53 is a 1.5A low-dropout
linear voltage regulator that provides a low voltage, high
current output with a minimum of external components. It
offers high precision, ultra-low dropout (500mV over
temperature), and low ground current.
The MIC37150/51/52/53 operates from an input of 2.25V
to 6.0V. It is designed to drive digital circuits requiring low
voltage at high currents (i.e., PLDs, DSPs, micro-
controllers, etc.). It is available in xed and adjustable
output voltages. Fixed voltages include 1.5V, 1.65V, 1.8V,
2.5V and 3.3V. The adjustable version is capable of
supplying output voltages from 1.24V to 5.5V.
Features of the MIC37150/51/52/53 LDO include thermal
and current limit protection, and reverse current and
reverse battery protection. Logic enable and error ag pins
are available.
Junction temperature range of the MIC37150/51/52/53 is
from –40°C to +125°C.
For applications requiring input voltage greater than 6.0V,
see MIC3910x, MIC3915x, MIC3930x, and MIC3950x
LDOs.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Features
1.5A minimum guaranteed output current
500mV maximum dropout voltage over temperature
Ideal for 3.0V to 2.5V conversion
Ideal for 2.5V to 1.8V, 1.65V, or 1.5V conversion
Stable with ceramic or tantalum capacitor
Wide input voltage range
– VIN: 2.25V to 6.0V
±1.0% initial output tolerance
Fixed and adjustable output voltages
– MIC37150—3-pin xed voltages
– MIC37151—5-pin S-Pak or 8-pin e-Pad SOIC
xed voltages with flag
– MIC37152—5-pin adjustable voltage
– MIC37153—8-pin adjustable voltage with flag
Excellent line and load regulation specications
Logic controlled shutdown
Thermal shutdown and current limit protection
Reverse-leakage protection
Low prole 3 or 5-pin S-Pak packages or 8-pin e-Pad
SOIC
Applications
LDO linear regulator for low-voltage digital IC
PC add-in cards
High efficiency linear power supplies
SMPS post regulator
Battery charger
Typical Application
VIN = 3.0V
CIN
MIC37151
VIN VOUT
VEN
FLG
GND
www.DataSheet4U.com
100k
VOUT = 2.5V VIN
COUT
47µF, Ceramic
CIN
MIC37152
VIN VOUT
VEN
ADJ
GND
R1
R2
1.3V
COUT
47µF, Ceramic
Fixed 2.5V Regulator with Error Flag
Adjustable Regulator
Super ßeta PNP is a trademark of Micrel, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
October 2007
M9999-101907

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