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MP3393 9-32V 8-String Step-Up White LED Driver TSSOP28
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pMPS MP3393 — 8-String Step-Up White LED Driver, 9-32V input, TSSOP28./p
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MP3393 9-32V 8-String Step-Up White LED Driver TSSOP28
The MPS MP3393 is a 8-String Step-Up White LED Driver. It operates from a 9 V to 32 V input. It is supplied in a TSSOP28 package.
The MP3393 is a step-up controller with 8 current channel sources designed to power WLED backlights for large LCD panels.
Key Specifications
| Part Number | MP3393 |
| Function | 8-String Step-Up White LED Driver |
| Input Voltage | 9 V to 32 V |
| Interface | PWM |
| Package | TSSOP28 |
| Ordering Codes | MP3393 |
Features
- 9V-to-32V Input Voltage Range
- Drives 8 Channels of LED strings
- Internal Constant-Current Control
- Maximum Channel Current Over 350mA
- 1.2% Current Matching Accuracy Between Strings
- Programmable Switching Frequency
- Analog Dimming and External PWM Dimming
- Open and Short LED Protection
- Programmable Over-Voltage Protection
- Fault Output Flag
Typical Application Circuit
Applications
- 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 MP3393 support?
9 V to 32 V.
Which package and ordering codes apply to the MP3393?
TSSOP28; order codes include MP3393.
What are the defining features of the MP3393?
9V-to-32V Input Voltage Range Drives 8 Channels of LED strings
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