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MP2483 Datasheet(PDF) 7 Page - Monolithic Power Systems

Part # MP2483
Description  2.5A, 55V, Programmable Frequency White LED Driver
Download  14 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP2483 Datasheet(HTML) 7 Page - Monolithic Power Systems

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MP2483 – 2.5A, 55V, PROGRAMABLE FREQUENCY WHITE LED DRIVER
MP2483 Rev. 1.0
www.MonolithicPower.com
7
12/25/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN=20V, ILED=0.7A, seven 3W LED in series, Buck-boost application, referred to VSS, unless
otherwise noted
IWLED vs VEN
-100
0
100
200
300
400
500
600
700
800
0
200 400 600 800 1000 1200 1400 1600
VEN(mV)
IWLED vs Dimming Duty
0
100
200
300
400
500
600
700
800
0
0.2
0.4
0.6
0.8
1
DIMMING DUTY
Efficiency vs. Input Voltage
INPUT VOLTAGE (V)
EN on
Steady state
EN
20V/div
IL
2A/div
IL
2A/div
SW
20V/div
SW
20V/div
IWLED
500mA/div
IWLED
500mA/div
VIN
2V/div
IINDUCTOR
2A/div
IINDUCTOR
2A/div
IINDUCTOR
1A/div
ISHORT
2A/div
SW
20V/div
IWLED
500mA/div
IWLED
500mA/div
VLED+
10V/div
100us/div
100us/div
1us/div
2ms/div
1ms/div
10us/div
Open LED Protection
Short Circuit Protection
(short LED + to VSS)
PWM dimming
EN off
EN
20V/div
SW
20V/div
SW
20V/div
SW
10V/div
EN
5V/div
OVP
500mV/div
VIN
20V/div
0
1020304050
60
65
70
75
80
85
90
95
100
3WLED,710mA
4WLED,710mA
5WLED,710mA


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