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MP4658 6-36V, 200mA Return LED Driver SOIC
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pMPS MP4658 — Return LED Driver, 6-36V input, 200 mA output, SOIC./p
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MP4658 6-36V, 200mA Return LED Driver SOIC
The MPS MP4658 is a Return LED Driver. It operates from a 6 V to 36 V input and is rated for 200 mA. It is supplied in a SOIC package.
The MP4658 is a 4-string, secondary-side LED driver for LED backlighting, and is ideal for monitor and small-sized TV LED backlighting.
Key Specifications
| Part Number | MP4658 |
| Function | Return LED Driver |
| Input Voltage | 6 V to 36 V |
| Current Rating | 200 mA |
| Interface | PWM |
| Package | SOIC |
| Ordering Codes | MP4658 |
Features
- 6V to 36V Supply Voltage (VIN)
- 80V/200mA, 4-String LED Current Balance
- Provides Feedback for the Previous Power Stage
- <2% LED Current Accuracy
- 1.5% LED Current Balance
- Low LEDx Regulation Voltage, High Efficiency
- Analog and PWM Dimming
- LED Open Protection, LED Short Protection
- LEDx Pin Short-to-GND Protection
- Over-Voltage Protection (OVP)
Typical Application Circuit
Applications
- LCD Monitor and TVs
- Desktop 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 MP4658 support?
6 V to 36 V. The rated output is 200 mA.
Which package and ordering codes apply to the MP4658?
SOIC; order codes include MP4658.
What are the defining features of the MP4658?
6V to 36V Supply Voltage (VIN) 80V/200mA, 4-String LED Current Balance
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