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MIC5190BML-TR

P1-P3P4-P6P7-P9P10-P12P13-P13
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.
1.25V
IN
±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 × 3mm MLF™ and
10-lead MSOP-10 packages and has an operating junction
temperature range of –40°C to +125°C.
All support documentation can be found on Micrel’s web
site at www.micrel.com.
Typical Application
Features
• Input voltage range:
V
IN
= 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× 3mm 10-lead MLF™ and MSOP-10 packages
• Available –40°C to +125°C junction temperature
Applications
• Distributed power supplies
• ASIC power supplies
• DSP, µP, and µC power supplies
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc.
PowerPAK is a trademark of Siliconix, Inc.
VIN
SGND
PGND
IS
IR3716S
OUT
VCC1
R1
100Ω
C3
0.01µF
C2
10µF
R2
125Ω
FB
GND
V
OUT
= 0.9V@7A
GND
VCC2
EN
COMP
MIC5190
R3
12.5kΩ
C1
0.01µF
V
IN
=1.2V
V
CC
=
12V
December 2005 1 M9999-120105
MIC5190 Micrel
Pin Description
Pin Number Pin Name Pin Function
1 VIN Input voltage (Current Sense +).
2 FB Feedback input to error amplifier.
3 SGND Signal ground.
4 VCC1 Supply to the internal voltage regulator.
5 COMP Error amplifier output for external compensation.
6 EN Enable (Input): CMOS-compatible.
Logic high = Enable, Logic low = Shutdown. Do not float pin.
7 VCC2 Power to output driver.
8 OUT Output drive to gate of power MOSFET.
9 PGND Power ground.
10 IS Current sense.
Pin Configuration
COMP EN5
1VIN
FB
SGND
VCC1
10 IS
PGND
OUT
VCC
2
9
8
7
2
3
4
6
MLF™-10 (ML)
Ordering Information
COMP EN65
1VIN
FB
SGND
VCC1
10 IS
PGND
OUT
VCC
2
9
8
7
2
3
4
MSOP-10 (MM)
FB Output Output
Standard Pb-Free
V
oltage Current
V
oltage
MIC5190BML MIC5190YML 0.5V ADJ ADJ –40°C to +125°C 10-pin MLF™
MIC5190BMM MIC5190YMM 0.5V ADJ ADJ –40°C to +125°C MSOP-10
Part Number
PackageJunction Temp. Range
December 2005 2 M9999-120105
MIC5190 Micrel
Electrical Characteristics
(6)
T
A
= 25°C with V
IN
= 1.2V, V
CC
= 12V, V
OUT
= 0.5V; bold values indicate –40°C < T
J
< +125°C; unless otherwise specified.
Parameter Condition Min Typ Max Units
Output Voltage Accuracy At 25°C –1 +1 %
Over temperature range –2+2%
Output Voltage Line Regulation V
IN
= 1.2V to 5.5V –0.10.005+0.1 %/V
Feedback Voltage 0.495 0.5 0.505 V
Output Voltage Load Regulation I
L
= 10mA to 1A 0.02 0.5 %
VCC Pin Current (V
CC
1 + V
CC
2) Enable = 0V 40 µA
VCC Pin Current (V
CC
1 + V
CC
2) Enable = 5V15 20 mA
VIN Pin Current Current from V
IN
10 15 µA
FB Bias Current 13 30 µA
Current Limit Threshold 35 50 70 mV
Start-up Time V
EN
= V
IN
25 100 µs
Enable Input Threshold Regulator enable 0.8 0.6V
Regulator shutdown 0.5 0.2 V
Enable Hysteresis 100 mV
Enable Pin Input Current V
IL
< 0.2V (Regulator shutdown) 100 nA
V
IH
> 0.8V (Regulator enabled) 100 nA
Notes:
1. Exceeding the absolute maximum ratings may damage the device.
2. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
3. The device is not guaranteed to function outside its operating ratings.
4. Per JESD 51-5 (1S2P Direct Attach Method).
5. Per JESD 51-3 (1S0P).
6. Specification for packaged product only.
Absolute Maximum Ratings
(1)
Supply Voltage (V
IN
) ..................................................+6.0V
Enable Input Voltage (V
EN
) .........................................+14V
V
CC
1, V
CC
2 ............................................................... +14V
Junction Temperature (T
J
) ................ –40°C ≤ T
J
≤ +125°C
ESD ......................................................................... Note 2
Operating Ratings
(3)
Supply Voltage (V
IN
) ................................... +0.9V to +5.5V
Enable Input Voltage (V
EN
) ................................. 0V to V
CC
V
CC
1,V
CC
2 ............................................... +4.5V to +13.2V
Junction Temperature (T
J
) ................ –40°C ≤ T
J
≤ +125°C
Package Thermal Resistance
MLF™ (θ
JA
)
(4)
.....................................................60°C/W
MSOP (θ
JA
)
(5)
..............................................................
200°C/W
December 2005 3 M9999-120105
P1-P3P4-P6P7-P9P10-P12P13-P13

MIC5190BML-TR

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IC LNR REG CTRLR 1OUT 10MLF
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