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MP3398D 5-28V White LED Controller SOIC16
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pMPS MP3398D — White LED Controller, 5-28V input, SOIC16./p
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MP3398D 5-28V White LED Controller SOIC16
The MPS MP3398D is a White LED Controller. It operates from a 5 V to 28 V input. It is supplied in a SOIC16 package.
The MP3398D is a step-up controller with four current channels designed to drive WLED arrays for large LCD panel backlighting applications.
Key Specifications
| Part Number | MP3398D |
| Function | White LED Controller |
| Input Voltage | 5 V to 28 V |
| Interface | PWM |
| Package | SOIC16 |
| Ordering Codes | MP3398D |
Features
- 4-String, 350mA/String Max WLED Driver
- 5V-to-28V Input Voltage Range
- 2.5% Current Matching Accuracy between Strings
- Programmable Switching Frequency
- PWM and Analog Dimming Mode
- Cascading Capability with a Single Power Source
- LED Open and Short LED Protection
- Programmable Over-Voltage Protection (OVP)
- Recoverable Thermal Shutdown
- Over-Current Protection (OCP)
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 MP3398D support?
5 V to 28 V.
Which package and ordering codes apply to the MP3398D?
SOIC16; order codes include MP3398D.
What are the defining features of the MP3398D?
4-String, 350mA/String Max WLED Driver 5V-to-28V Input Voltage Range
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