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MP3309C 2.7-5.5V White LED Driver QFN10
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pMPS MP3309C — White LED Driver, 2.7-5.5V input, QFN10./p
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MP3309C 2.7-5.5V White LED Driver QFN10
The MPS MP3309C is a White LED Driver. It operates from a 2.7 V to 5.5 V input. It is supplied in a QFN10 package.
The MP3309C 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.
Key Specifications
| Part Number | MP3309C |
| Function | White LED Driver |
| Input Voltage | 2.7 V to 5.5 V |
| Output Voltage | 38 V |
| Interface | I²C |
| Package | QFN10 |
| Ordering Codes | MP3309C |
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 Open Load Protection Point
- Low 200mV Feedback Voltage with ±1% Accuracy at Room Temperature
- Software Enable Function
- UVLO, Thermal Shutdown
Typical Application Circuit
Applications
- Feature Phones and Smart Phones
Design Notes
- Channel-to-channel current matching sets backlight uniformity; check the matching spec at the current you will actually run.
- In boost topologies the OVP threshold must clear the worst-case forward voltage of the longest string, including temperature and binning spread.
- Keep PWM dimming above 200 Hz to stay clear of visible flicker, and away from the audio band if the product has a speaker.
- Size the inductor and output capacitor for the string current ripple, not the total LED current.
Common Questions
What input voltage does the MP3309C support?
2.7 V to 5.5 V.
Which package and ordering codes apply to the MP3309C?
QFN10; order codes include MP3309C.
What are the defining features of the MP3309C?
2.7V to 5.5V Input Voltage Analog and PWM Dimming
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