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MP3359 3.5-40V, 150mA, 4CH Boost WLED Driver QFN-20
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pMPS MP3359 — Boost WLED Driver, 3.5-40V input, 150 mA output, 4 channels, QFN-20./p
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MP3359 3.5-40V, 150mA, 4CH Boost WLED Driver QFN-20
The MPS MP3359 is a Boost WLED Driver. It operates from a 3.5 V to 40 V input, is rated for 150 mA and drives 4 LED strings. It is supplied in a QFN-20 package.
The MP3359 is a step-up converter with four channel current sources.
Key Specifications
| Part Number | MP3359 |
| Function | Boost WLED Driver |
| Input Voltage | 3.5 V to 40 V |
| Current Rating | 150 mA |
| Channels | 4 |
| Interface | PWM |
| Package | QFN-20 |
| Ordering Codes | MP3359 |
Features
- 3.5V to 40V Input Voltage (VIN) Range
- 4 Channels with a Maximum of 150mA per Channel
- Internal 100mΩ, 50V MOSFET
- Configurable Switching Frequency (fSW) Up to 2.2MHz
- External Sync Switching (SW) Function
- Pulse-Width Modulation (PWM) Dimming
- Analog Dimming
- Deep Dimming Ratio
- Excellent EMI Performance and Frequency Spread Spectrum (FSS)
- Fixed 100µs Delay Time between LED Current Channels during PWM Dimming (Replaces Phase Shift)
Typical Application Circuit
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 MP3359 support?
3.5 V to 40 V. The rated output is 150 mA.
Which package and ordering codes apply to the MP3359?
QFN-20; order codes include MP3359.
What are the defining features of the MP3359?
3.5V to 40V Input Voltage (VIN) Range 4 Channels with a Maximum of 150mA per Channel
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