EV1528DQ-00A Ver la hoja de datos (PDF) - Monolithic Power Systems
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EV1528DQ-00A Datasheet PDF : 9 Pages
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TM
MP1528 – 9 LAMP, 36V PRECISION WHITE LED DRIVER
TYPICAL PERFORMANCE CHARACTERISTICS
Circuit on front page, VIN = 3.6V, 9 LEDs, ILED = 20mA, VBRT = 1.2V, TA = +25°C, unless otherwise
noted.
Feedback Voltage vs
Input 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)
MP1528_TPC01
Feedback Voltage vs
BRT Voltage
500
400
300
200
100
0
0
1
2
3
4
5
BRT VOLTAGE (V)
MP1528_TPC02
LED Current vs
BRT Duty Cycle @ 200Hz
20
18
16
14
12
10
8
6
4
2
0
0 20 40 60 80 100
BRT DUTY CYCLE (%)
MP1528_TPC03
Steady-State Operation
Startup
VEN
5V/div.
VSW
10V/div.
VBIAS AC
0.2V/div.
VSW
10V/div.
IINDUCTOR
0.5A/div.
VBIAS
10V/div.
MP1528_TPC04
Startup into an
Open Load
VEN
5V/div.
VSW
20V/div.
VBIAS
20V/div.
MP1528_TPC05
MP1528_TPC06
Efficiency vs
LED Current
(6 LEDs)
100
90
80
70
VIN =
12V
7.5V
5V
4.2V
3V
60
50
40
30
0
5 10 15 20 25
LED CURRENT (mA)
MP1528_TPC07
Efficiency vs
LED Current
(8 LEDs)
100
90
VIN =
12V
7.5V
80
5V
4.2V
70
3V
60
50
40
30
0
5 10 15 20 25
LED CURRENT (mA)
MP1528_TPC08
Efficiency vs
LED Current
(9 LEDs)
100
90
VIN =
12V
7.5V
80
5V
4.2V
70
3V
60
50
40
30
0
5 10 15 20 25
LED CURRENT (mA)
MP1528_TPC09
MP1528 Rev. 1.7
www.MonolithicPower.com
4
2/21/2006
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
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