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MP3312 2.7-5.5V, 1.2MHz Dual-Channel White LED Driver WLCSP1
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pMPS MP3312 — Dual-Channel White LED Driver, 2.7-5.5V input, WLCSP1./p
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MP3312 2.7-5.5V, 1.2MHz Dual-Channel White LED Driver WLCSP1
The MPS MP3312 is a Dual-Channel White LED Driver. It operates from a 2.7 V to 5.5 V input and switches at 1.2 MHz. It is supplied in a WLCSP1 package.
The MP3312 is a dual-channel step-up WLED driver with integrated 40V MOSFET, and supports 2.7V to 5.5V power supply input.
Key Specifications
| Part Number | MP3312 |
| Function | Dual-Channel White LED Driver |
| Input Voltage | 2.7 V to 5.5 V |
| Switching Frequency | 1.2 MHz |
| Interface | PWM |
| Package | WLCSP1 |
| Ordering Codes | MP3312 |
Features
- 2.7V~5.5V Input Voltage
- 1.2MHz Switching Frequency
- Dual Channels Support up to 30mA/String
- 1% Current Matching Between LED Channels
- +/-2% Current Accuracy
- 38V OVP Protection
- PWM Input Analog Dimming Mode
- 5kHz to100kHz PWM Input Analog Dimming
- 1-Wire Interface for Digital Dimming
- 9-bit Dimming Resolution
Typical Application Circuit
Applications
- Feature Phone and Smart Phones
- GPS Receivers
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 MP3312 support?
2.7 V to 5.5 V.
Which package and ordering codes apply to the MP3312?
WLCSP1; order codes include MP3312.
What are the defining features of the MP3312?
2.7V~5.5V Input Voltage 1.2MHz Switching Frequency
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