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MP3309A 2.7-5.5V White LED Driver QFN10
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pMPS MP3309A — White LED Driver, 2.7-5.5V input, QFN10./p
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MP3309A 2.7-5.5V White LED Driver QFN10
The MPS MP3309A 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 MP3309A 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 | MP3309A |
| Function | White LED Driver |
| Input Voltage | 2.7 V to 5.5 V |
| Output Voltage | 35 V |
| Interface | PWM |
| Package | QFN10 |
| Ordering Codes | MP3309A |
Features
- 2.7V-to-5.5V Input Voltage
- Low 200mV Feedback Voltage with ±1% Accuracy
- Synchronous Mode
- Analog and PWM Dimming
- Programmable Switching Frequency
- 35.5V Over Voltage Protection Point
- Hardware-Enable Function
- UVLO, Thermal Shutdown
- Available in 3x3mm QFN10 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 MP3309A support?
2.7 V to 5.5 V.
Which package and ordering codes apply to the MP3309A?
QFN10; order codes include MP3309A.
What are the defining features of the MP3309A?
2.7V-to-5.5V Input Voltage Low 200mV Feedback Voltage with ±1% Accuracy
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