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MP4601 数据表(PDF) 4 Page - Monolithic Power Systems

部件名 MP4601
功能描述  White LED Driver For Large Size TV Backlighting
PDF  16 Pages
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制造商  MPS [Monolithic Power Systems]
网页  http://www.monolithicpower.com
标志 MPS - Monolithic Power Systems

MP4601 数据表(HTML) 4 Page - Monolithic Power Systems

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MP4601 – WHITE LED DRIVER FOR LARGE SIZE TV BACKLIGHTING
MP4601 Rev. 1.0
www.MonolithicPower.com
4
1/28/2011
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VVIN = 12V, PWM and AD Pins floating, RFST=51kΩ, TA = +25°C, VVSS=VINGND=0V, unless otherwise
noted.
Parameters
Symbol Condition
Min
Typ
Max
Units
FB Feedback Voltage
VFB
190
200
210
mV
FB Input Current
IFB
VFB = 0.2V
-0.1
0.1
µA
VIN UVLO Rising
VVINTH
2.7
3.5
4.1
V
VIN UVLO Hysteresis
VVINHYS
70
mV
Shut Down Current
Ioff
VEN=0V
10
µA
Supply Current (Quiescent)
IQ
VPWM = 0V,
VFB = 250mV
850
1000
µA
Switch-On Resistance
RDS(ON)
0.5
Ω
Switch Leakage
ISWLK
VVIN=80V, VEN=0V,
VPWM=0V, VSW=0V
10
µA
Switch Current Limit
IS_MAX
OCP pin open
2.5
A
OCP Output Voltage
VOCP
1.1
1.2
1.3
V
Oscillator Frequency
fSW
FST pin open
0.8
0.95
1.2
MHz
RFST = 200kΩ
200
280
390
kHz
FST Output Voltage
VFST
1
1.1
1.2
V
Fold-back Frequency
fSWFB
VFB = VOVP = 0V,
FST pin open
160
kHz
VFB = VOVP = 0V,
RFST = 200kΩ
36
Slope Compensation
SSLOPE
SLOPE pin open
1
1.2
1.4
V/µs
RSLOPE = 200kΩ
0.3
0.39
0.47
SLOPE Pin Output Voltage
VSLOPE
1
1.1
1.2
V
Maximum Duty Cycle
DMAX
VFB = 0.15V,FST
pin open
95
%
Minimum On-Time
tON
100
ns
SYN Input Current
ISYN
VSYN = 3.3V
400
µA
VSYN = 0V
-700
Frequency Synchronization Range
(5)
fSW SYN
RFST>620kΩ
0.1
2
MHz
PWM Dimming OFF Threshold
VDIML
VDIM Falling
0.6
V
PWM Dimming ON Threshold
VDIMH
VDIM Rising
1.7
V
DIM Input Current
VDIM = 3.3V
36
µA
VDIM = 0V
-3.5
PWM Dimming Frequency
100
50k
Hz
Minimum Analog Dimming Threshold
VADMIN
VFB = 5mV
0.7
V
Maximum Analog Dimming Threshold
VADMAX
VFB = 200mV
1.5
V
EN OFF Threshold
VENL
VEN Falling
0.6
V
EN ON Threshold
VENH
VEN Rising
1.7
V
EN Input Current
IEN
VEN = 3.3V
3.8
µA
Dim Gate Driver Sourcing Current
IDGD+
VDGD-VSS=10V,
VDIM=0V
-25
mA
Dim Gate Driver Sinking Current
IDGD-
VDGD-VSS=0V
VDIM=2V
45
mA



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