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MIC5190 Datasheet, PDF (1/13 Pages) Micrel Semiconductor – Ultra High-Speed, High-Current Active Filter/LDO Controller | |||
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MIC5190
Micrel
MIC5190
Ultra High-Speed, High-Current Active Filter/LDO Controller
General Description
The MIC5190 is an ultra high-speed linear regulator. It uses
an external N-Channel FET as its power device.
The MIC5190 offers ultra high-speed to cope with the fast
load demands of microprocessor cores, ASICs, and other
high-speed devices. Signal bandwidths of greater than 500kHz
can be achieved with a minimum amount of capacitance
while at the same time keeping the output voltage clean,
regardless of load demand. A powerful output driver delivers
large MOSFETs into their linear regions, achieving ultra-low
dropout voltage.
1.25VIN±10% can be turned into 0.9V ±1% without the use of
a large amount of capacitance.
MIC5190 (0.5V reference) is optimized for output voltages of
below 1.0V.
The MIC5190 is offered in 10-lead 3mm à 3mm MLF⢠and
10-lead MSOP-10 packages and has an operating junction
temperature range of â40°C to +125°C.
All support documentation can be found on Micrelâs web
site at www.micrel.com.
Features
⢠Input voltage range:
VIN = 0.9V to 5.5V
⢠+1.0% initial output tolerance
⢠Dropout down to 25mV@10A
⢠Filters out switching frequency noise on input
⢠Very high large signal bandwidth >500kHz
⢠PSRR >40dB at 500kHz
⢠Adjustable output voltage down to 0.5V
⢠Stable with any output capacitor
⢠Excellent line and load regulation specifications
⢠Logic controlled shutdown
⢠Current limit protection
⢠3mm à 3mm 10-lead MLF⢠and MSOP-10 packages
⢠Available â40°C to +125°C junction temperature
Applications
⢠Distributed power supplies
⢠ASIC power supplies
⢠DSP, µP, and µC power supplies
Typical Application
VCC = 12V
C1
0.01µF
VIN =1.2V
GND
IR3716S
MIC5190
IS
OUT
R1
VIN
100â¦
VCC1
FB
VCC2
R2
PGND
125â¦
EN
SGND
C3
0.01µF
COMP
R3
12.5kâ¦
VOUT = 0.9V@7A
C2
10µF
GND
MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc.
PowerPAK is a trademark of Siliconix, Inc.
Micrel, Inc. ⢠1849 Fortune Drive ⢠San Jose, CA 95131 ⢠USA ⢠tel + 1 (408) 944-0800 ⢠fax + 1 (408) 474-1000 ⢠http://www.micrel.com
April, 2004
1
M9999-042804
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