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| MIC2215_07 Datasheet, PDF (8/11 Pages) Micrel Semiconductor – Triple High PSRR, Low Noise μCap LDO | |||
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Micrel, Inc.
Functional Diagram
VIN1
EN1
Current
Limit
Error
Amp
VIN2
EN2
Current
Limit
Error
Amp
VIN3
EN3
GND
Current
Limit
Error
Amp
VOUT1
VIN1
EN1
ADJ1
VOUT2
VIN2
EN2
ADJ2
VOUT3
VIN3
EN3
ADJ3
GND
MIC2215
Current
Limit
Error
Amp
Current
Limit
Error
Amp
Current
Limit
Error
Amp
VOUT1
VOUT2
VOUT3
Thermal
Limit
VREF
Quick-
Start
BYP
MIC2215 Block Diagram
(Adjustable)
Thermal
Limit
VREF
Quick-
Start
BYP
MIC2215 Block Diagram
(Fixed)
Functional Description
The MIC2215 is a triple, low noise CMOS LDO.
Designed specifically for noise-critical applications in
handheld or battery-powered devices, the MIC2215
comes equipped with a noise reduction feature to filter
the output noise via an external capacitor. Other features
of the MIC2215 include a separate logic compatible
enable pin for each channel, current limit, thermal
shutdown, and ultra-fast transient response, all within a
small MLF® package.
The MIC2215 is specifically designed to work with low-
ESR ceramic capacitors, reducing the amount of board
space necessary for power applications, which is critical
in hand-held wireless devices.
January 2007
8
M9999-011207
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