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MP3373 9-40V Step Up WLED Controller TSSOP-28
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pMPS MP3373 — Step Up WLED Controller, 9-40V input, TSSOP-28./p
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MP3373 9-40V Step Up WLED Controller TSSOP-28
The MPS MP3373 is a Step Up WLED Controller. It operates from a 9 V to 40 V input. It is supplied in a TSSOP-28 package.
The MP3373 is a step-up controller with 8- channel external current sources designed for driving the WLED arrays for large size LCD panel backlighting applications.
Key Specifications
| Part Number | MP3373 |
| Function | Step Up WLED Controller |
| Input Voltage | 9 V to 40 V |
| Interface | PWM |
| Package | TSSOP-28 |
| Ordering Codes | MP3373 |
Features
- 9V to 40V Input Voltage Range
- 8-Channel LED strings with external current balance
- 1.2% Current Matching Accuracy Between Strings
- Programmable Switching Frequency
- External PWM Dimming
- Selectable Phase Shift Function at PWM DIM Mode
- Open/Short LED Protection
- Short Inductor/Diode Protection
- Programmable Over-voltage Protection
- Thermal Shutdown
Typical Application Circuit
Applications
- LCD Flat Panel 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 MP3373 support?
9 V to 40 V.
Which package and ordering codes apply to the MP3373?
TSSOP-28; order codes include MP3373.
What are the defining features of the MP3373?
9V to 40V Input Voltage Range 8-Channel LED strings with external current balance
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