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MP3378E 24V, 4CH 4-Channel WLED Controller TSSOP-28
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pMPS MP3378E — 4-Channel WLED Controller, 24V input, 4 channels, TSSOP-28./p
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MP3378E 24V, 4CH 4-Channel WLED Controller TSSOP-28
The MPS MP3378E is a 4-Channel WLED Controller. It accepts up to 24 V at the input and drives 4 LED strings. It is supplied in a TSSOP-28 package.
The MP3378E is a one-chip solution specially designed for monitor applications.
Key Specifications
| Part Number | MP3378E |
| Function | 4-Channel WLED Controller |
| Input Voltage | up to 24 V |
| Channels | 4 |
| Interface | PWM |
| Package | TSSOP-28 |
| Ordering Codes | MP3378E |
Features
- WLED Controller:
- 4-String, Max 350mA/String, WLED Controller
- Up to 24V Input Voltage Range
- 2.5% Current Matching Accuracy
- Programmable Switching Frequency
- PWM and Analog Dimming Mode
- LED Open and Short Protection
- Programmable Over-Voltage Protection
- Recoverable Thermal Shutdown Protection
- Over-Current Protection
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 MP3378E support?
Up to 24 V.
Which package and ordering codes apply to the MP3378E?
TSSOP-28; order codes include MP3378E.
What are the defining features of the MP3378E?
WLED Controller: 4-String, Max 350mA/String, WLED Controller
Shenzhen Gaorunxin Technology Co., Ltd
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