MP3011DQ-LF-Z Datasheet, PDF (1/8 Pages) MPS Industries, Inc. – 1x, 1.5x, 2x High Efficiency Charge Pump 2 White LED Driver

TM
MP3011
1x, 1.5x, 2x High Efficiency Charge Pump
2 White LED Driver
The Future of Analog IC Technology ^TM
DESCRIPTION
The MP3011 is a fully automatic driver for
powering two white LEDs, with up to 4V forward
voltage, from a single Li-Ion or three NiMH cells.
The driver performs all of the sensing and
control to run the LEDs at an optimum charge
pump ratio for efficiency without an expensive
inductor. The driver allows PWM operation to
support brightness control.
The tiny 3mm x 3mm QFN16 package and
small external capacitors allow for the most
compact white LED solution available.
EVALUATION BOARD REFERENCE
Board Number
Dimensions
EV3011DQ-00A
2.4” x 1.9” x 0.4”
FEATURES
• 2% LED Current Matching
• High Efficiency (>93%)
• Current Source Outputs
• No Ballast Resistors Required
• 1x, 1.5x and 2x Automatic Modes
• Constant Frequency Operation
• Automatic LED Detection
• High and Low Frequency PWM Capability
• 2.5V to 5.5V Operation
• Less than 1μA Leakage during Shutdown
• Detects Changes in Battery Level
• No External Schottky Diode Required
• Soft-Start and Soft Switching Operation
APPLICATIONS
• Cell Phones
• PDA or Hand Held Computers
• White LED Application at 3.6V Supply
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
BATT
ENABLE
GND
MP3011
5, 13
4
BATT C1A
12
EN
7
C1B
11
6
RADJ C2A
3, 10
GND
9
C2B
15
LED1
8
16
LEDC LED2
LED2
LED1
Efficiency vs
Supply Voltage
V_LED = 3.35V @ 40mA
100 _ILED=10mA
90
I_LED=40mA
80
70
60
50
40
I_LED=20mA
30
20
10
0
2.5 3.0 3.5 4.0 4.5
SUPPLY VOLTAGE (V)
MP3011 Rev. 1.2
www.MonolithicPower.com
1
10/11/2007
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2007 MPS. All Rights Reserved.