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MP3389 5-28V Step-up White LED Driver SOIC
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pMPS MP3389 — Step-up White LED Driver, 5-28V input, SOIC./p
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MP3389 5-28V Step-up White LED Driver SOIC
The MPS MP3389 is a Step-up White LED Driver. It operates from a 5 V to 28 V input. It is supplied in a SOIC package.
The MP3389 is a step-up controller with 12- channel current sources designed for driving the WLED arrays for large size LCD panel backlighting applications.
Key Specifications
| Part Number | MP3389 |
| Function | Step-up White LED Driver |
| Input Voltage | 5 V to 28 V |
| Interface | PWM |
| Package | SOIC |
| Ordering Codes | MP3389 |
Features
- High Efficiency and Small Size
- 5V to 28V Input Voltage Range
- Balanced Driver for 12 Strings of WLEDs
- Maximum 60mA for Each String
- 2.5% Current Matching Accuracy Between Strings
- Programmable Switching Frequency
- PWM or DC Input Burst PWM Dimming
- Open and Short LED protection
- Programmable Over-voltage Protection
- Under Voltage Lockout
Typical Application Circuit
Applications
- Desktop LCD Flat Panel Displays
- Flat Panel Video Displays
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 MP3389 support?
5 V to 28 V.
Which package and ordering codes apply to the MP3389?
SOIC; order codes include MP3389.
What are the defining features of the MP3389?
High Efficiency and Small Size 5V to 28V Input Voltage Range
Shenzhen Gaorunxin Technology Co., Ltd
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