參數(shù)資料
型號(hào)： MIC5237-5.0BU
廠商： MICREL INC
元件分類(lèi)： 基準(zhǔn)電壓源/電流源
英文描述： 500mA Low-Dropout Regulator Preliminary Information
中文描述： 5 V FIXED POSITIVE LDO REGULATOR, 0.7 V DROPOUT, PSSO3
封裝： TO-263, 3 PIN
文件頁(yè)數(shù)： 1/8頁(yè)
文件大?。?/td> 41K
代理商： MIC5237-5.0BU
January 2000
1
MIC5237
MIC5237
Micrel
Typical Application
MIC5237
500mA Low-Dropout Regulator
Preliminary Information
General Description
The MIC5237 is a general-purpose low-dropout regulator
capable of 500mA output current with better than 3% output
voltage accuracy. Using Micrel’s proprietary Super
eta PNP process with a PNP pass element, these regu-
lators feature less than 300mV dropout voltage and typically
8mA ground current at full load.
Designed for applications that require moderate current over
a broad input voltage range, including hand-held and battery-
powered devices, the MIC5237 is intended for applications
that can tolerate moderate voltage drop at higher current.
Key features include low ground current to help prolong
battery life, reversed-battery protection, current limiting, over-
temperature shutdown, and thermally efficient packaging.
The MIC5237 is available in fixed output voltages only.
For space-critical applications and improved performance,
see the MIC5209 and MIC5219. For output current require-
ments up to 750mA, see the MIC2937.
Features
Guaranteed 500mA output over the full operating
temperature range
Low 300mV typical dropout voltage at full load
Extremely tight load and line regulation
Current and thermal limiting
Reversed-battery protection
TO-220 and TO-263 packages
Low temperature coefficient
No-load stability
Low-noise output
Applications
Portable and laptop computers
Desktop computer
Battery chargers
SMPS post-regulator/dc-to-dc modules
Consumer and personal electronics
Ordering Information
Part Number
MIC5237-2.5BT
MIC5237-2.5BU
MIC5237-3.3BT
MIC5237-3.3BU
MIC5237-5.0BT
MIC5237-5.0BU
Voltage
2.5V
2.5V
3.3V
3.3V
5.0V
5.0V
Junct. Temp. Range
–40
°
C to +125
°
C
–40
°
C to +125
°
C
–40
°
C to +125
°
C
–40
°
C to +125
°
C
–40
°
C to +125
°
C
–40
°
C to +125
°
C
Package
TO-220
TO-263
TO-220
TO-263
TO-220
TO-263
MIC5237-5.0
IN
OUT
GND
1.0μF
1.0μF
tantalum
V
≥
5.6V
V
OUT
5.0V
3%
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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