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MP1529 Datasheet(PDF) 4 Page - Monolithic Power Systems

Part # MP1529
Description  Fixed Frequency Step-Up Converter LCD Backlight Plus Flash
PDF  11 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP1529 Datasheet(HTML) 4 Page - Monolithic Power Systems

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MP1529 – FIXED FREQUENCY STEP-UP CONVERTER LCD BACKLIGHT PLUS FLASH
MP1529 Rev. 1.0
www.MonolithicPower.com
4
11/23/2005
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
TM
TYPICAL PERFORMANCE CHARACTERISTICS
Circuit of Figure 2, VIN = 3.6V, 3 LEDs on LED1, 3 LEDs on LED2, 3 LEDs on LED3,
ILED_BL = 20mA, ILED_PV = 40mA, ILED_FL = 100mA, unless otherwise noted.
35
30
25
20
15
10
5
0
MP1529-TPC05
LED Current Setting
Backlight Mode
2.5
3.0
3.5
4.0
4.5
VIN (V)
MP1529-TPC06
LED Current vs. VIN
25
20
15
10
5
0
20
40
60
80
100
DUTY CYCLE (%)
MP1529-TPC08
ILED_BL vs. PWM Dimming
Duty Cycle
Current Matching
LED1 vs. LED2
95
90
85
80
75
22
20
18
16
14
12
120
100
80
60
40
20
0
2.5
3.0
3.5
4.0
4.5
VIN (V)
MP1529-TPC04
Efficiency vs. VIN
Flash Mode
MP1529-TPC03
Efficiency vs. LED Current
Backlight Mode,
1 String of 6 LEDs
VIN=3.6V
VIN=4.2V
VIN=2.7V
MP1529-TPC02
Efficiency vs. LED Current
Backlight Mode,
1 String of 4 LEDs
85
80
75
70
65
85
80
75
70
65
85
80
75
70
65
0
5
10
15
20
25
0
5
10
15
20
25
0
5
10
15
20
25
ILED_BL(mA)
ILED_BL (mA)
ILED_BL (mA)
MP1529-TPC01
Efficiency vs. LED Current
Backlight Mode,
1 String of 3 LEDs
VIN=4.2V
VIN=4.2V
VIN=2.7V
VIN=2.7V
VIN=3.6V
VIN=3.6V
2.5
3.0
3.5
4.0
4.5
VIN (V)
MP1529-TPC07
0 100 200 300 400 500 600 700
3 LEDs
4 LEDs
LED1
LED2
Flash Mode
Preview Mode
Backlight Mode



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