MP4470-Z データシートの表示（PDF） - Monolithic Power Systems
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MP4470-Z
Monolithic Power Systems
MP4470-Z Datasheet PDF : 18 Pages
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MP4470/4470A–HIGH-EFFICIENCY, FAST-TRANSIENT, SYNCHRONOUS, STEP-DOWN CONVERTER
ELECTRICAL CHARACTERISTICS
VIN = 24V, VEN = 2V, TA = +25°C, unless otherwise noted.
Parameters
Symbol Condition
Supply Current (Shutdown)
IIN
VEN = 0V
Supply Current (Quiescent)
IIN
VFB = 0.95V
HS Switch On Resistance
LS Switch On Resistance (5)
HSRDS-ON
LSRDS-ON
Switch Leakage
Current Limit
One-Shot On Time
Minimum Off Time(5)
SWLKG
ILIMIT
tON
tOFF
VEN = 0V
VSW = 0V or 36V
VIN=12V,
RFREQ=30kΩ
Foldback Off Time(5)
Foldback Off Time(5)
OCP Hold-Off Time(5)
tFB
ILIM=1(HIGH),
VFB>50%VREF
tFB
ILIM=1(HIGH),
VFB<50%VREF
tOC
ILIM=1(HIGH)
Feedback Voltage
VFB
Feedback Current
IFB
VFB = 815mV
Soft-Start Charging Current
ISS
VSS=0V
Power-Good Rising Threshold
PGVth-Hi
Power-Good Falling Threshold
PGVth-Lo
Power-Good Threshold Hysteresis
PGVth-Hys
Power-Good Rising Delay
EN Rising Threshold
tPG
ENVth-Hi
EN Falling Threshold
ENVth-Lo
EN Threshold Hysteresis
EN Input Current
VIN Under-Voltage Lockout
Threshold Rising
ENVth-Hys
IEN
INUVVth
VEN = 2V
VIN Under-Voltage Lockout
Threshold Hysteresis
INUVHYS
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
Note:
5) Derived from bench characterization, not tested in production.
6) For MP4470 only. MP4470A has no OVP function.
Min Typ
10
500
40
20
10
6
8
230 280
100
4.8
16.8
100
807 815
10
6
8.5
0.87 0.9
0.82 0.85
0.05
500 700
1.1 1.25
0.8 0.86
390
1.5
3.7
4.0
880
4.5 4.85
1
1.25
175
45
Max
200
600
55
200
330
823
50
11
0.93
0.88
900
1.4
0.92
2
4.3
5.2
Units
nA
μA
mΩ
mΩ
nA
A
ns
ns
μs
μs
μs
mV
nA
μA
VFB
VFB
VFB
μs
V
V
mV
μA
V
mV
V
%
VFB
°C
°C
MP4470/4470A 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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