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| MP3309CGQG-P Datasheet, PDF (1/13 Pages) MPS Industries, Inc. – 2.7V-5.5V Input, 35V Output White LED Driver With I2C Interface | |||
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The Future of Analog IC Technology
MP3309
2.7V-5.5V Input, 35V Output
White LED Driver With I2C Interface
DESCRIPTION
The MP3309 is a WLED step-up converter for
2.7V-to-5.5V input that uses peak-current mode
to regulate the LED current sensed through an
external, low-side resistor. The 200mV
feedback voltage and synchronous rectification
reduces power loss and reduces PCB space
requirements. For non-synchronous mode,
setting an internal register can disable the
rectifier MOSFET to save driver losses.
The MP3309 features a programmable
switching frequency to optimize efficiency. It
supports both analog and PWM dimming.
In addition, the MP3309 has LED open
protection, cycle-by-cycle current limit
protection, Under voltage protection and
thermal shutdown protection -. The I2C interface
can set the protection indication bits and over-
voltage
protection
point.
TYPICAL APPLICATION
FEATURES
⢠2.7V-to-5.5V Input Voltage
⢠Analog and PWM Dimming
⢠Selectable Synchronous or Non-
synchronous Mode
⢠400kHz I2C-Compatible Interface
⢠Digitally-Set LED Current
⢠Programmable Switching Frequency
⢠Programmable Over VoltageProtection
Point
⢠Low 200mV Feedback Voltage with ±1%
⢠Software- or Hardware-Enable Function
⢠Internal Soft Start
⢠UVLO, Thermal Shutdown, OCP
⢠Available in a 1.4mm Ã1.8mm QFN-10
package
MP3309âDefault Analog Dimming (PWMH) by
external PWM signal input
MP3309CâDefault I2C Interface
APPLICATIONS
⢠Feature Phones and Smart Phones
⢠Tablets
⢠<10inchVideo Displays
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
âMPSâ and âThe Future of Analog IC Technologyâ are Registered Trademarks of
Monolithic Power Systems, Inc.
Typical Application Circuit
MP3309 Rev. 1.01
www.MonolithicPower.com
1
5/14/2014
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
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