MIC37300/37301/37302
Micrel
MIC37300/37301/37302
3.0A, Low-Voltage
碌
Cap LDO Regulator
General Description
The Micrel MIC37300/01/02 is a 3.0A low-dropout linear
voltage regulator that provides a low-voltage, high-current
output with a minimum number of external components. It
offers high precision, ultra-low-dropout (500mV overtem-
perature), and low-ground current.
The MIC37300/01/02 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, DSP, microcontroller,
etc.). It is available in fixed and adjustable output voltages.
Fixed voltages include 1.5V, 1.8V, 2.5V and 3.3V. The
adjustable version is capable of 1.24V to 5.5V.
Features of the MIC37300/01/02 LDO include thermal and
current-limit protection, and reverse-current protection. Logic
enable and error flag pins are available on the 5-pin version.
Junction temperature range of the MIC37300/01/02 is from
鈥?0擄C to 125擄C.
For applications requiring input voltage greater than 6.0V,
see the MIC3910x, MIC3915x, MIC3930x, and MIC3950x
LDOs.
All data sheets and support documentation can be found
on Micrel鈥檚 web site at www.micrel.com.
Features
鈥?3.0A minimum guaranteed output current
鈥?500mV maximum dropout-voltage overtemperature
Ideal for 3.0V to 2.5V conversion
Ideal for 2.5V to 1.8V, 1.65V, or 1.5V conversion
鈥?Stable with ceramic or tantalum capacitor
鈥?Wide input voltage range:
V
IN
: 2.25V to 6.0V
鈥?+1.0% initial output tolerance
鈥?Fixed and adjustable output voltages:
MIC37300 鈥?3-pin fixed
MIC37301 鈥?5-pin fixed with flag
MIC37302 鈥?5-pin adjustable
鈥?Excellent line and load regulation specifications
鈥?Logic controlled shutdown
鈥?Thermal shutdown and current-limit protection
鈥?Reverse-leakage protection
鈥?Low profile S-Pak package
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
LDO linear regulator for low-voltage digital IC
PC add-in cards
High-efficiency linear power supplies
SMPS post regulator
Battery charger
Typical Application
MIC37300
V
IN
= 3.0V
VIN
VOUT
V
IN
V
OUT
= 2.5V
C
OUT
47碌F, Ceramic
MIC37302
VIN
VOUT
R1
VEN
GND
ADJ
R2
1.3V
C
IN
C
OUT
47碌F, Ceramic
GND
Fixed 2.5V Regulator
MIC37301
VIN
VOUT
100k
VEN
GND
FLG
Adjustable Regulator
V
IN
= 3.0V
C
IN
V
OUT
= 2.5V
C
OUT
47碌F, Ceramic
DROPOUT (mV)
500
450
400
350
300
250
200
150
100
50
0
Dropout vs.
Output Current
2.5V
OUT
Fixed 2.5V Regulator with Error Flag
3.3V
OUT
0
0.5
1
1.5
2
2.5
OUTPUT CURRENT (A)
3
Super 脽eta PNP is a registered trademark of Micrel, Inc.
Micrel, Inc. 鈥?1849 Fortune Drive 鈥?San Jose, CA 95131 鈥?USA 鈥?tel + 1 (408) 944-0800 鈥?fax + 1 (408) 944-0970 鈥?http://www.micrel.com
November 2003
1
M0307-112003
MIC37300 PDF文件相關(guān)型號(hào)
MIC37300-1.8BR,MIC37301-1.5BR
MIC37300相關(guān)型號(hào)PDF文件下載
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