MP3001 Datasheet, PDF (1/9 Pages) Monolithic Power Systems – 1x, 1.5x, 2x Auto-Adjust Charge Pump White LED Backlight and Flashlight Driver

The Future of Analog IC Technology
MP3001
1x, 1.5x, 2x Auto-Adjust Charge Pump
White LED Backlight and Flashlight Driver
DESCRIPTION
The MP3001 is a dual function WLED driver
intended for camera phone applications. It can
drive up to 4 backlight WLEDs at up to 30mA
each and a flash WLED at up to 250mA.
Backlight brightness can be adjusted with a
5-bit register plus one bit for precise low
brightness control.
The MP3001 employs a super efficient
inductorless charge pump with 1x, 1.5x and 2x
automatic mode control to achieve high
efficiency power conversions.
Monolithic Power System’s single wire MPC^TM
serial data link provides a simple and fast
interface used to enable, disable and set
current levels for each LED. In addition,
soft-start limits the inrush current during startup
and mode switching.
Each output is current limited, providing
controlled brightness and short circuit protection.
Thermal shutdown protection guards against
excessive loads and shorts.
The tiny 3mm x 3mm QFN 16-pin package and
small external capacitors deliver the most
compact white LED solution available.
FEATURES
• Simultaneous Support of Backlight and
Flash LEDs up to 370mA
• Three Independent Controls on WLED
Currents
Backlight: up to 4 WLEDs at 30mA Each
Flashlight: up to 250mA Total
Preview: up to 120mA Total
• Single Wire Serial Bus (MPC^TM Serial Data Link)
Simple, Low Overhead Solution
Fast Data Transfer Rate
• Good Current Matching at Low LED Current Level
• Thermal Shutdown Protection
• Under-Voltage Protection
• Available in a 3mm x 3mm 16-Pin QFN Package
• Low EMI Noise
APPLICATIONS
• Cellular Phones
• PDA Phones
• PDAs
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
“MPC” is a Trademark of Monolithic Power Systems, Inc.
TYPICAL APPLICATION
BATT
SINGLE PIN SERIAL PORT
7
VIN
4
C1A
3
C1B
6
C2A
2
C2B
MP3001
8
DATA
11
ISET1
10
ISET2
9
ISET3
5
VSS
FL D1 D2 D3 D4
12
FLED
250mA Total
Flash/Preview
LED0
LED1
LED2
LED3
16
15
14
13
120mA Total Backlight
1
CP
COMMON ANODE
CONFIGURATION
CONNECT EXPOSED PAD TO PIN5
Efficiency vs
Battery Voltage
100
I_LED=10mA
90
80
70
60
50 ^{I_LED=20mA I_LED=30mA}
40
30
20
2.5 3.0 3.5 4.0 4.5
BATTERY VOLTAGE (V)
MP3001 Rev. 0.91
www.MonolithicPower.com
1
9/21/2007
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2007 MPS. All Rights Reserved.