MIC5270
Micrel
MIC5270
IttyBitty鈩?Negative Low-Dropout Regulator
Preliminary Information
General Description
The MIC5270 is a
碌Cap
100mA negative regulator in a SOT-
23-5 package. With better than 2% initial accuracy, this
regulator provides a very accurate supply voltage for applica-
tions that require a negative rail. The MIC5270 sinks 100mA
of output current at very low dropout voltage (600mV maxi-
mum at 100mA of output current).
The
碌Cap
regulator design is optimized to work with low-
value, low-cost ceramic capacitors. The output typically re-
quires only a 1碌F capacitance for stability.
Designed for applications where small packaging and effi-
ciency are critical, the MIC5270 combines LDO design exper-
tise with IttyBitty
鈩?/div>
packaging to improve performance and
reduce power dissipation. Ground current is optimized to help
improve battery life in portable applications.
The MIC5270 is available in the SOT-23-5 package for space
saving applications and it is available with fixed 鈥?.0V, 鈥?.1V,
and 鈥?.0V outputs.
Features
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
IttyBitty
鈩?/div>
SOT-23-5 packaging
Low dropout voltage
Low ground current
Tight initial accuracy
Tight load and line regulation
Thermal shutdown
Current limiting
Stable with low-ESR ceramic capacitors
GaAsFET bias
Portable cameras and video recorders
PDAs
Battery-powered equipment
Applications
Ordering Information
Part Number
MIC5270-3.0BM5
MIC5270-4.1BM5
MIC5270-5.0BM5
Voltage
鈥?.0V
鈥?.1V
鈥?.0V
Temperature Range
鈥?0掳C to +85掳C
鈥?0掳C to +85掳C
鈥?0掳C to +85掳C
Package
SOT-23-5
SOT-23-5
SOT-23-5
Typical Application
MIC5270-5.0
2
Pin Configuration
NC GND NC
3
4
2
1
V
IN
鈥?.0V
GND
鈥揑N
鈥揙UT
5
V
OUT
鈥?.0V
4
LLxx
5
1碌F
10碌F
鈥揙UT
鈥揑N
MIC5270-x.xBM5
Pin Description
Pin Number
1
2
3
4
5
Pin Name
NC
GND
NC
鈥揙UT
鈥揑N
Pin Function
Not internally connected.
Ground
Not internally connected.
Negative Regulator Output
Negative Supply Input
IttyBitty is a trademark of Micrel, Inc.
March 1999
283
MIC5270
MIC5270相关型号PDF文件下载
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