MP1528DK MPS [Monolithic Power Systems], MP1528DK Datasheet - Page 4

• Manufacturer Part Number: MP1528DK
• Description: 9 Lamp, 36V Precision White LED Driver
• Manufacturer: MPS [Monolithic Power Systems]

TYPICAL PERFORMANCE CHARACTERISTICS
Circuit on front page, V
noted.
MP1528 Rev. 1.7
2/21/2006
I
INDUCTOR
V
0.2V/div.
0.5A/div.
10V/div.
BIAS AC
100
V
430
420
410
400
390
380
370
90
80
70
60
50
40
30
SW
2.5
0
Steady-State Operation
Efficiency vs
LED Current
(6 LEDs)
Feedback Voltage vs
Input Voltage
TM
3.0
LED CURRENT (mA)
5
INPUT VOLTAGE (V)
3.5
10
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
4.0
15
IN
4.5
= 3.6V, 9 LEDs, I
MP1528_TPC07
MP1528_TPC04
MP1528_TPC01
20
5.0
V
IN
12V
7.5V
5V
4.2V
3V
=
5.5
25
10V/div.
10V/div.
5V/div.
V
© 2006 MPS. All Rights Reserved.
100
V
BIAS
V
500
400
300
200
100
90
80
70
60
50
40
30
SW
EN
0
www.MonolithicPower.com
0
Startup
0
Feedback Voltage vs
BRT Voltage
Efficiency vs
LED Current
(8 LEDs)
MP1528 – 9 LAMP, 36V PRECISION WHITE LED DRIVER
LED
LED CURRENT (mA)
1
= 20mA, V
5
BRT VOLTAGE (V)
10
2
15
3
BRT
MP1528_TPC05
MP1528_TPC02
MP1528_TPC08
20
4
= 1.2V, T
V
IN
12V
7.5V
5V
4.2V
3V
=
25
5
20V/div.
20V/div.
5V/div.
V
V
BIAS
100
A
V
SW
90
80
70
60
50
40
30
20
18
16
14
12
10
EN
= +25°C, unless otherwise
8
6
4
2
0
0
Startup into an
Open Load
LED Current vs
BRT Duty Cycle @ 200Hz
0
Efficiency vs
LED Current
(9 LEDs)
20
BRT DUTY CYCLE (%)
LED CURRENT (mA)
5
40
10
60
15
80
MP1528_TPC06
MP1528_TPC03
MP1528_TPC09
20
V
12V
7.5V
5V
4.2V
3V
IN
100
=
25
4