MP1495 – SYNCHRONOUS STEP-DOWN CONVERTER
ELECTRICAL CHARACTERISTICS (6)
VIN = 12V, TA = 25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
Max
1
Units
μA
Supply Current (Shutdown)
Supply Current (Quiescent)
HS Switch-ON Resistance
LS Switch-ON Resistance
Switch Leakage
IIN
Iq
VEN = 0V
VEN = 2V, VFB = 1V, AAM=0.5V
0.5
80
30
1
mA
mΩ
mΩ
μA
HSRDS-ON VBST-SW=5V
LSRDS-ON VCC =5V
SWLKG VEN = 0V, VSW =12V
1
Current Limit (6)
ILIMIT
fSW
Under 40% Duty Cycle
VFB=0.75V
4.2
5
A
Oscillator Frequency
Fold-Back Frequency
Maximum Duty Cycle
Minimum ON Time(6)
Sync Frequency Range
440
500
0.25
95
580
kHz
fSW
fFB
VFB<400mV
DMAX
tON_MIN
fSYNC
VFB=700mV
90
%
60
ns
0.2
791
787
2
MHz
TA =25°C
-40°C<TA<85°C (7)
807
807
10
823
827
50
Feedback Voltage
VFB
mV
Feedback Current
IFB
VFB=820mV
nA
V
EN Rising Threshold
EN Falling Threshold
VEN_RISING
VEN_FALLING
1.2
1.1
1.4
1.6
1.4
1.25
V
VEN=2V
VEN=0
2
μA
EN Input Current
IEN
0
8
μA
μs
EN Turn-Off Delay
ENtd-off
VIN Under-Voltage Lockout
Threshold-Rising
INUVVth
3.7
3.9
4.1
V
VIN Under-Voltage Lockout
Threshold-Hysteresis
INUVHYS
VCC
650
mV
VCC Regulator
5
3
V
%
VCC Load Regulation
ICC=5mA
Soft-Start Period
tSS
1.5
150
20
ms
°C
°C
Thermal Shutdown (6)
Thermal Hysteresis (6)
Notes:
6) Guaranteed by design.
7) Not tested in production and guaranteed by over temperature correlation.
MP1495 Rev. 1.04
12/26/2012
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
3
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