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MIC37501 Datasheet(PDF) 1 Page - Micrel Semiconductor

Part No. MIC37501
Description  5A, Low Voltage μCap LDO Regulator
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Maker  MICREL [Micrel Semiconductor]
Homepage  http://www.micrel.com
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MIC37501 Datasheet(HTML) 1 Page - Micrel Semiconductor

 
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MIC37501/37502
5A, Low Voltage μCap LDO Regulator
Super βeta is a registered 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
General Description
The MIC37501 and MIC37502 are 5A, low dropout
linear voltage regulator that provide low voltage, high
current outputs with a minimum of external components.
They offer high precision, ultra-low dropout (500mV),
and low ground current.
The MIC37501and MIC37502 operate from an input of
2.3V to 6.0V. They are designed to drive digital circuits
requiring low voltage at high currents (i.e., PLDs, DSPs,
microcontrollers, etc.). They are available in fixed and
adjustable output voltages. Fixed voltages include 1.5V,
1.65V, 1.8V, 2.5V, and 3.3V. The adjustable version is
capable of 1.24V to 5.5V.
MIC37501 and MIC37502 LDOs feature thermal and
currentlimit protection and reverse current protection.
Logic enable and error flag pins are available.
Junction temperature range of the MIC37501/02 is from
–40°C to 125°C.
For applications requiring input voltage greater than
6.0V, see MIC3910x, MIC3915x, MIC3930x, and
MIC3950x LDOs.
All support documentation can be found on Micrel’s web
site at www.micrel.com.
Features
• 5A minimum guaranteed output current
• 500mV maximum dropout voltage
– 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: 2.3V to 6.0V
• ±1.0% initial output tolerance
• Fixed and adjustable output voltages:
– MIC37501—7 terminal fixed voltage
– MIC37502—5 (TO-263) and 7 (SPAK) terminal
adjustable voltage
• Excellent line and load regulation specifications
• Logic controlled shutdown
• Thermal shutdown and current-limit protection
• Reverse-leakage protection
• Low profile S-Pak and TO-263 packages
Applications
• LDO linear regulator for low-voltage digital IC
• PC add-in cards
• High efficiency linear power supplies
• SMPS post regulator
• Battery charger
Typical Applications
VOUT
VIN
VOUT
VIN
FLG
GND
VEN
COUT
100F, Ceramic
100k
MIC37501
VIN = 3.0V
VOUT = 2.5V
CIN
Fixed 2.5V Regulator with Error Flag
VOUT
VIN
VOUT
VIN
ADJ
GND
VEN
COUT
100F, Ceramic
R1
R2
1.3V
MIC37502
VIN
CIN
Adjustable Regulator
0
50
100
150
200
250
300
350
400
450
012345
OUTPUT CURRENT (A)
Dropout
vs. Output Current
2.5V
OUT
May 2011
1
M9999-050511-B


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