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MP9181 Datasheet(PDF) 3 Page - Monolithic Power Systems

Part # MP9181
Description  High Efficiency, Fast Transient, 3A, 4.5V-20V Input Synchronous Step-down Converter in a Tiny 2mmx3mm QFN12 Package
PDF  19 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP9181 Datasheet(HTML) 3 Page - Monolithic Power Systems

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MP9181 – 3A, 4.5V-20V INPUT, FAST TRANSIENT SYNCHRONOUS STEP-DOWN CONVERTER IN QFN12 (2X3mm)
MP9181 Rev 1.01
www.MonolithicPower.com
3
12/10/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 12V, TA = 25°C, unless otherwise noted.
Parameters
Symbol
Condition
Min
Typ
Max
Units
Supply Current (Shutdown)
IIN
VEN = 0V
0
μA
Supply Current (Quiescent)
IIN
VEN = 2V, VFB = 0.9V
360
μA
HS Switch-on Resistance
HSRDS-ON
120
mΩ
LS Switch-on Resistance
LSRDS-ON
50
mΩ
Switch Leakage
SWLKG
VEN = 0V, VSW = 0V or
12V
0
10
μA
Current Limit
(5)
ILIMIT
After Soft-Start Time-
out
4
5
A
One-Shot on Time
TON
R7 = 300kΩ,
VOUT =1.2V
250
ns
Minimum Off Time
TOFF
130
150
ns
Fold-back Off Time
TFB
ILIM = 1
4.5
μs
OCP Hold-off Time
TOC
ILIM = 1
50
μs
TA = 25°C
807
815
823
mV
Feedback Voltage
VFB
-40°C ≤ TA ≤ 85°C
803
827
mV
Feedback Current
IFB
VFB = 850mV
10
50
nA
Soft Start Time
TSS
1
ms
EN Rising Threshold
ENVth-Hi
1.0
1.35
1.6
V
EN Threshold Hysteresis
ENVth-Hys
500
mV
VEN = 2V
2
μA
EN Input Current
IEN
VEN = 0V
0
Power-good Rising Threshold
PGVth-Hi
0.9
VFB
Power-good Falling Threshold
PGVth-Lo
0.85
VFB
Power-good Delay
PGTd
0.5
ms
Power-good
Sink
Current
Capability
VPG
Sink 4mA
0.4
V
Power-good Leakage Current
IPG_LEAK
VPG = 3.3V
10
nA
VIN Under-voltage Lockout
Threshold Rising
INUVVth_rising
3.9
4.1
4.3
V
VIN Under-voltage Lockout
Threshold Falling
INUVVth_falling
3.4
V
VIN Under-voltage Lockout
Threshold Hysteresis
INUVVth HYS
500
mV
Thermal Shutdown
TSD
150
°C
Thermal Shutdown Hysteresis
TSD-HYS
25
°C
Note:
5) Guaranteed by design and characterization.



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