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MP4600 Folha de dados(PDF) 3 Page - Monolithic Power Systems

Nome de Peças MP4600
Descrição Electrónicos  High-Voltage WLED Driver For Large Panel TV Backlighting
PDF  8 Pages
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Fabricante Electrônico  MPS [Monolithic Power Systems]
Página de início  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP4600 Folha de dados(HTML) 3 Page - Monolithic Power Systems

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MP4600 – WHITE LED DRIVER FOR UP TO 55 INCH TV BACKLIGHTING
MP4600 Rev. 0.91
www.MonolithicPower.com
3
1/6/2012
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VDD = 12V, TA = +25°C, all voltages with respect to VSS, unless otherwise noted.
Parameters
Symbol
Condition
Min
Typ
Max
Units
Feedback Voltage
VFB
VDD=4.5V to 55V
0.188
0.198
0.208
V
Feedback Current
IFB
VFB = 0.22V
-50
50
nA
Switch-On Resistance
RDS(ON)
0.28
Ω
Switch Leakage
ISW-LK
VEN = 0V, VSW = 0V
1
μA
Current Limit
ILIMIT
3.0
A
Oscillator Frequency
fS
VFB = 0.1V,
RST=100k
Ω
0.5
MHz
Default Oscillator Frequency
fS-Default
VFB = 0.1V, RST
open
1.35
MHz
Fold-back Frequency
fS-FB
VFB = 0V, VOVP=0V
250
kHz
Maximum Duty Cycle
DMAX
VFB = 0.1V
90
%
Minimum On-Time
tON
100
ns
Under Voltage Lockout Threshold Rising
VDD-TH
3.0
3.3
3.6
V
Under Voltage Lockout Threshold Hysteresis
VDD-HYS
100
mV
VEN = 2V
2.1
EN Input Current
IEN
VEN = 0V
0.1
μA
EN OFF Threshold (w/Respect to INGND)
VENL
VEN Falling
0.4
V
EN ON Threshold (w/Respect to INGND)
VENH
VEN Rising
0.6
V
Minimum EN Dimming Threshold
VDIML
0.6
0.7
0.8
V
Maximum EN Dimming Threshold
VDIMH
1.25
1.4
1.5
V
PWM Dimming Frequency
(5)
fPWM
100
20k
Hz
Supply Current (Quiescent)
IQ
VEN = 2V, VFB = 1V
0.8
1.0
mA
Supply Shut Down Current
IOFF
VEN = 0V
3.4
15
μA
Thermal Shutdown
TTH
150
°C
Thermal Shutdown Hysteresis
THYS
20
°C
Open LED OV Threshold
VOVP-TH
1.1
1.2
1.3
V
Open LED OV Hysteresis
VOVP-HYS
60
mV
Note:
5) Guaranteed by design.



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