MPQ4470 Ver la hoja de datos (PDF) - Monolithic Power Systems
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MPQ4470
Monolithic Power Systems
MPQ4470 Datasheet PDF : 20 Pages
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MPQ4470/4470A–HIGH-EFFICIENCY, FAST-TRANSIENT, SYNCHRONOUS, STEP-DOWN CONVERTER, AEC-Q100 QUALIFIED
ELECTRICAL CHARACTERISTICS
VIN = 24V, VEN = 2V, TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TJ = 25°C.
Parameters
Symbol Condition
Min Typ Max Units
Supply Current (Shutdown)
Supply Current (Quiescent)
HS Switch On Resistance
LS Switch On Resistance (5)
Switch Leakage
Current Limit
One-Shot On Time
Minimum Off Time(5)
Fold-back Off Time(5)
Fold-back Off Time(5)
OCP hold-off time(5)
IIN
VEN = 0V
10
300
nA
IIN
VFB = 0.95V
500
600
μA
HSRDS-ON
40
65
mΩ
LSRDS-ON
20
mΩ
SWLKG
VEN = 0V
VSW = 0V or 36V
10
400
nA
ILIMIT
6
8
12
A
tON
VIN=12V, RFREQ=30kΩ 230
280
330
ns
tOFF
100
ns
tFB
ILIM=1(HIGH),
FB>50%VREF
4.8
μs
tFB
ILIM=1(HIGH),
FB<50%VREF
16.8
μs
tOC
ILIM=1(HIGH)
100
μs
Feedback Voltage
VFB
TJ = 25°C
VFB
TJ = -40°C to 125°C
Feedback Current
IFB
VFB = 815mV
Soft Start Charging Current
ISS
VSS=0V
Power Good Rising Threshold
PGOODVth-Hi
Power Good Falling Threshold
PGOODVth-Lo
Power Good
Hysteresis
Threshold PGOODVth-Hys
807 815
823
mV
803
827
mV
10
50
nA
6
8.5
11
μA
0.87 0.9
0.93
VFB
0.82 0.85 0.88
VFB
0.05
VFB
Power Good Rising Delay
EN Rising Threshold
EN Falling Threshold
EN Threshold Hysteresis
EN Input Current
VIN Under-Voltage Lockout
Threshold Rising
tPGOOD
ENVth-Hi
ENVth-Lo
ENVth-Hys
IEN
INUVVth_R
VEN = 2V
500 700
900
μs
1.1 1.25
1.4
V
0.73 0.86 0.99
V
390
mV
1.5
2
μA
3.7
4.0
4.3
V
VIN Under-Voltage Lockout
Threshold Falling
INUVVth_F
2.8
3.1
3.4
V
VIN Under-Voltage Lockout
Threshold Hysteresis
INUVHYS
900
mV
VCC Regulator
VCC Load Regulation
Vo Over-Voltage Protection
Threshold (6)
Thermal Shutdown(5)
Thermal Shutdown Hysteresis(5)
VCC
VOVP
TSD
TSD-HYS
ICC=0
ICC=10mA
4.5 4.85
5.2
V
1
2
%
1.15 1.25 1.35
VFB
175
°C
45
°C
Note:
5) Derived from bench characterization, not tested in production.
6) For MPQ4470 only, MPQ4470A has no OVP function.
MPQ4470/4470A Rev. 1.1
www.MonolithicPower.com
3
8/26/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
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