MIC5373 Datasheet, PDF (1/19 Pages) Micrel Semiconductor – Triple 200mA μCap LDO in 2.5 x 2.5 Thin MLF

MIC5373/83
Triple 200mA µCap
LDO in 2.5 x 2.5 Thin MLF
General Description
The MIC5373/83 is a triple output device with three 200mA
LDOs which is ideal for application processor support in
mobile platforms. The MIC5373 provides independent
control active high enables for each of the 200mA LDOs.
The MIC5383 provides active low enables. Both the
MIC5373 and MIC5383 are available in the tiny 2.5mm x
2.5mm Thin MLF^® package.
The MIC5373/83 is designed for high input ripple rejection
(high PSRR) and provides low output noise making it ideal
for powering sensitive RF circuitry such as GPS, WiFi and
Bluetooth applications. The MIC5373/83 also incorporates
a power-on-reset (POR) supervisor with adjustable delay
time set by an external capacitor, and an independent
input pin to monitor any voltage level. Once high the POR
output can be asserted low again by enabling the manual
reset (MR) pin. When the MR pin is restored low the POR
output will re-time the delay set by the external delay
capacitor.
The MIC5373/83 operates with very small ceramic output
capacitors to reduce board space and component cost. It
is available in various fixed output voltages. The
MIC5373/83 has a junction temperature range from -40°C
to 125°C.
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
• 1.7V to 5.5V input supply voltage range
• Output current - 200mA LDO1/2/3
• High output accuracy (±2%)
• Independent enable pins
• POR with user-defined voltage monitoring
- POR voltage input
- Adjustable delay time
- Manual reset pin
• Low dropout voltage – 170mV at 150mA
• High PSRR - 55dB at 1kHz on each LDO
• Stable with tiny ceramic output capacitors
• 2.5mm x 2.5mm Thin MLF^® 16-pin package
• Thermal shutdown and current limit protection
Applications
• Mobile phones
• GPS receivers
• Application co-processors
• PDAs and handheld devices
Typical Application
MIC5373
0.1µF
1µF
1µF
BIAS
INLDO1/ 2
INLDO3
OUT1
OUT2
OUT3
EN1
EN2
EN3
MR
100k
POR
POR_IN
DLY
GND
1µF
1µF
1µF
10k ^VBIAS
10k ^VMONITOR
10k
150pF
0.1µF
1µF
1µF
100k
MIC5383
BIAS
OUT1
INLDO1/ 2 OUT2
INLDO3
OUT3
EN1
EN2
EN3
MR
POR
POR_IN
DLY
GND
1µF
1µF
1µF
10k ^VBIAS
10k ^VMONITOR
10k
150pF
Typical MIC5373-xxxYMT Circuit
(Active High Enable)
Typical MIC5383-xxxYMT Circuit
(Active Low Enable)
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
July 2010
M9999-070110