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MP3309L 2.7-5.5V White LED Driver QFN-10
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pMPS MP3309L — White LED Driver, 2.7-5.5V input, QFN-10./p
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MP3309L 2.7-5.5V White LED Driver QFN-10
The MPS MP3309L is a White LED Driver. It operates from a 2.7 V to 5.5 V input. It is supplied in a QFN-10 package.
The MP3309L 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 | MP3309L |
| Function | White LED Driver |
| Input Voltage | 2.7 V to 5.5 V |
| Output Voltage | 24 V |
| Interface | PWM |
| Package | QFN-10 |
| Ordering Codes | MP3309L |
Features
- 2.7V to 5.5V Input Voltage
- Analog and PWM Dimming
- Programmable Switching Frequency
- 24V Open-Load Protection
- Low 200mV Feedback Voltage with ±1% Accuracy at Room Temperature
- UVLO, Thermal Shutdown
- Available in a 1.4mmx1.8mm QFN-10 Package
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 MP3309L support?
2.7 V to 5.5 V.
Which package and ordering codes apply to the MP3309L?
QFN-10; order codes include MP3309L.
What are the defining features of the MP3309L?
2.7V to 5.5V Input Voltage Analog and PWM Dimming
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