MP3318 is a WLED step-up converter with three current sinks and a 2.7 to 5.5V power supply input. The MP3318 uses peak-current mode to regulate the LED current set by the internal register. It integrates a 250mohm, 42V MOSFET. The maximum LED voltage is up to 38V. MP3318 is able to drive 10 LEDs in series for LCD panel applications larger than 5". It supports both linear and exponential analogue dimming with 11bit, ultra-high resolution to accurately regulate dimming current. Its auto-switching frequency function can optimize efficiency performance. Full protection features include LED open and short protection, cycle-by-cycle current limit and thermal shutdown. The I2C interface can set the internal register to program the MP3318 for flexible applications such as dimming mode, LED current ramp and protection threshold. It is available in a tiny WLCSP-12 (1.3mmx1.7mm) package. Applications include smartphones, tablets, GPS receivers, LCD video displays with one-cell Li-Ion battery.
- 3-channel, 38VOUT, linear/exponential dimming step-up WLED driver with I2C
- 42V, 250mohm internal MOSFET
- 3-channel current sink, each channel enable/disable respectively
- LED current up to 25mA in backlighting mode
- Linear or exponential analogue dimming, LED current up to 50mA in flash mode
- Excellent LED current accuracy, excellent LED string current matching
- 500KHz/1MHz switching frequency with optional -12% shift
- Auto-switching frequency (250KHz, 500KHz, 1MHz), LED short protection (2V, 3V, 5V)
- High-speed I2C interface (1.2MHz), internal soft start to reduce inrush current
- Current-limit protection (0.75A, 1A, 1.25A, 1.5A), LED open protection (17V, 23V, 30V, 38V)
Footnotes MPS part numbers ending in "-P" and "-Z" are the same parts. P & Z only indicates reel size. Warnings Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.
Product details
| Device Topology |
Boost (Step Up) |
| Input Voltage Min |
2.7V |
| Input Voltage Max |
5.5V |
| Output Voltage Max |
38V |
| Output Current Max |
25.75mA |
| Switching Frequency |
1MHz |
| No. of Outputs |
3Outputs |
| IC Mounting |
Surface Mount |
| Driver Case Style |
WLCSP |
| No. of Pins |
12Pins |
| Operating Temperature Min |
-40°C |
| Operating Temperature Max |
125°C |
| Product Range |
- |
| Automotive Qualification Standard |
- |
| MSL |
MSL 1 - Unlimited |
Other details
| Brand |
MONOLITHIC POWER SYSTEMS (MPS) |
| Part Number |
MP3318GC-P |
| Quantity |
Each (Supplied on Cut Tape) |
| Technical Data Sheet EN |
 |
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