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| MP3021 Datasheet, PDF (5/10 Pages) Monolithic Power Systems – 1x, 1.5x, 2x Auto-Adjust Charge Pump White LED Backlight Driver | |||
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MP3021 â 1X, 1.5X, 2X AUTO-ADJUST CHARGE PUMP WLED BACKLIGHT DRIVER
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VBATT = 4.2V, TA = +25°C, unless otherwise noted.
Soft Start to 1X Mode
VIN = 4.2V,1X Mode, 4 LED Full
Brightness
Soft Start to 1.5X Mode
VIN = 3.5V, 1.5X Mode, 4 LED Full
Brightness
Soft Start to 2X Mode
VIN = 2.7V, 2X Mode, 4 LED Full
Brightness
DATA
2V/div.
IBAT
50mA/div.
CP
2V/div.
DATA
2V/div.
IBAT
100mA/div.
CP
2V/div.
DATA
2V/div.
IBAT
100mA/div.
CP
2V/div.
Mode Change
From 1X to 1.5X
VIN = 3.3V,4 LED Full Brightness
CP
2V/div.
C1A
2V/div.
Mode Change
From 1.5X to 2X
VIN = 2.7V, 4 LED Full Brightness
CP
2V/div.
C1A
2V/div.
Charge Pump Waveform
at 1.5X Mode
VIN = 3.06V, 4 LED Full Brightness,
1.5X Mode
C1A
2V/div.
C1B
2V/div.
IBAT
100mA/div.
C1B
2V/div.
C1B
2V/div.
IBAT
100mA/div.
C2A
2V/div.
C2B
2V/div.
400ns/div.
Charge Pump Waveform
at 2X Mode
VIN = 3.06V, 4 LED Full Brightness,
2X Mode
C1A
2V/div.
C1B
2V/div.
C2A
2V/div.
C2B
2V/div.
400ns/div.
MP3021 Rev. 1.0
www.MonolithicPower.com
5
11/21/2007
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2007 MPS. All Rights Reserved.
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