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MP24892 bảng dữ liệu(PDF) 3 Page - Monolithic Power Systems

tên linh kiện MP24892
Giải thích chi tiết về linh kiện  Step Down White LED Driver with Wide 6V??5V Input Voltage
PDF  9 Pages
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nhà sản xuất  MPS [Monolithic Power Systems]
Trang chủ  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP24892 bảng dữ liệu(HTML) 3 Page - Monolithic Power Systems

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MP24892 – STEP DOWN WLED DRIVER WITH WIDE 6V–45V INPUT VOLTAGE
MP24892 Rev. 1.0
www.MonolithicPower.com
3
11/3/2011
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 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
45
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
0.25
0.3
V
EN/DIM Enable Hysteresis
VEN HYS
20
50
80
mV
EN/DIM Pull-Up 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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