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MP2489 数据表(PDF) 3 Page - Monolithic Power Systems

部件名 MP2489
功能描述  Step Down White LED Driver with Wide 6V.60V Input Voltage
PDF  13 Pages
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制造商  MPS [Monolithic Power Systems]
网页  http://www.monolithicpower.com
标志 MPS - Monolithic Power Systems

MP2489 数据表(HTML) 3 Page - Monolithic Power Systems

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MP2489 – STEP DOWN WLED DRIVER WITH WIDE 6V–60V INPUT VOLTAGE
MP2489 Rev. 1.23
www.MonolithicPower.com
3
10/11/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 24V, TA = +25°C, unless otherwise noted.
Parameter
Symbol
Condition
Min
Typ
Max
Units
Input Voltage
VIN
6
60
V
Shutdown Supply Current
ISD
108
µA
Quiescent Supply Current
IQ
No Switching
1
mA
Internal Reference Voltage
IREF
1.275
V
Feedback Reference Voltage
(with respect to VIN)
VIN-VRS VEN/DIM = 1.28V
192
202
212
mV
Feedback
Reference
Voltage
Hysterisis
VFB_HYS
±30
mV
EN/DIM Max Dimming Voltage
VDIM_MAX
2.56
V
EN/DIM Mim Dimming Voltage
VDIM_MIN
0.3
V
EN/DIM Enable High Voltage
VEN_HIGH VEN Rising
0.3
V
EN/DIM Enable Low Volatge
VEN_LOW VEN Falling
0.16
V
EN/DIM Up-pulling Resistor
REN
45
kΩ
Recommended PWM Dimming
Frequency
FPWM
0.1
2
kHz
Switch On Resistance
RDS_ON
0.5
Ω
Minimum On Time
TON_MIN
100
ns
Minimum Off Time
TOFF_MIN
100
ns
Recommended
Maximum
Operating Frequency
FMAX
600
kHz
Recommended Duty Cycle Range
at FMAX
D
30
70
%
Start Up Time
TSS
External capacitor on dim
pin is 4.7nF
0.3
ms



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