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MP1528 Datasheet(PDF) 4 Page - Monolithic Power Systems

Part # MP1528
Description  9 Lamp, 36V Precision White LED Driver
PDF  9 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP1528 Datasheet(HTML) 4 Page - Monolithic Power Systems

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MP1528 – 9 LAMP, 36V PRECISION WHITE LED DRIVER
MP1528 Rev. 1.7
www.MonolithicPower.com
4
2/21/2006
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
TM
TYPICAL PERFORMANCE CHARACTERISTICS
Circuit on front page, VIN = 3.6V, 9 LEDs, ILED = 20mA, VBRT = 1.2V, TA = +25°C, unless otherwise
noted.
500
400
300
200
100
0
012345
BRT VOLTAGE (V)
MP1528_TPC02
Feedback Voltage vs
BRT Voltage
430
420
410
400
390
380
370
2.5
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
LED CURRENT (mA)
MP1528_TPC01
Feedback Voltage vs
Input Voltage
20
18
16
14
12
10
8
6
4
2
0
0
20406080
100
BRT DUTY CYCLE (%)
MP1528_TPC03
LED Current vs
BRT Duty Cycle @ 200Hz
VEN
5V/div.
VSW
20V/div.
VBIAS
20V/div.
MP1528_TPC06
Startup into an
Open Load
VSW
10V/div.
VBIAS AC
0.2V/div.
IINDUCTOR
0.5A/div.
MP1528_TPC04
Steady-State Operation
VEN
5V/div.
VSW
10V/div.
VBIAS
10V/div.
MP1528_TPC05
Startup
MP1528_TPC08
Efficiency vs
LED Current
(8 LEDs)
100
90
80
70
60
50
40
30
0
5
10
15
20
25
LED CURRENT (mA)
MP1528_TPC09
Efficiency vs
LED Current
(9 LEDs)
100
90
80
70
60
50
40
30
0
5
10
15
20
25
LED CURRENT (mA)
MP1528_TPC07
Efficiency vs
LED Current
(6 LEDs)
100
90
80
70
60
50
40
30
0
5
10
15
20
25
12V
7.5V
5V
4.2V
3V
12V
7.5V
5V
4.2V
3V
12V
7.5V
5V
4.2V
3V
VIN =
VIN =
VIN =



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