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The MP3326 is a 16-channel WLED driver that can operate across a wide 4V to 16V input voltage range. The MP3326 applies 16 internal current sources in each LED string terminal. The LED current of each channel is set by an external current-setting resistor. The maximum current for each channel is 50mA (VIN ≥ 4.5V).
The device integrates an I2C interface with up to 10 configurable I2C addresses via an external resistor. This means that the MP3326 can support up to 10 cascaded ICs to drive the LED array. Each channel can be enabled or disabled through the I2C.
The MP3326 employs separate PWM dimming and analog dimming for each LED channel, as well as 12-bit resolution PWM dimming and 6-bit analog dimming for each channel. To optimize EMI/EMC performance, the LED current ramp rate and phase shift can be configured.
The device can output a refresh signal from the RFSH/FLT pin, and the refresh signal frequency can be set by the register. Open-load protection, short protection, and over-temperature protection (OTP) are integrated into the device. The fault indicator pulls low if a protection is triggered, and then the corresponding fault register is set.
The MP3326 is available in a QFN-24 (4mmx4mm) package.
- Separate Pulse-Width Modulation (PWM) Dimming and Analog Dimming per Channel
- Deep Dimming Mode, 12-Bit for PWM Dimming
- Phase Shift and Slew Rate to Reduce EMI
- Up to 10 Configurable Addresses
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Features & Benefits
- Wide 4V to 16V Input Voltage Range
- 16 Channels, 50mA/Ch Maximum (VIN ≥ 4.5V)
- LED Current Configured by External Resistor
- 6-Bit Analog Dimming for Each Channel
- 12-Bit PWM Dimming for Each Channel
- Selectable 220Hz, 250Hz, 280Hz, or 330Hz PWM Dimming Frequency
- Refresh Signal Output
- I2C Interface
- 10 Addresses Configurable via External Resistor
- Configurable LED Current Slew Rate
- 40μs Phase Shift
- Fault Indicator
- LED Open-Load Protection
- LED Short Protection with Configurable Threshold
- Under-Voltage Lockout (UVLO)
- Over-Temperature Protection (OTP)
- ELV Directive II Compliance
- Available in a QFN-24 (4mmx4mm) Package
Active Part Numbers:
Part numbers ending in P and Z are the same parts. P and Z only indicates reel size.
Meaning of P & Z
EVQ3326-R-00A Evaluation Kit 16-Channel, 50mA/Ch, LED Driver with Separated PWM Dimming, Analog Dimming, and I2C Evaluation Board, AEC-Q100 Qualified
The EVQ3326-R-00A is an evaluation board designed to demonstrate the capabilities of the MPQ3326, a 16-channel white LED (WLED) driver that can operate from a wide 4V to 16V input voltage range. The MP3326 applies 16 internal current sources in each LED string terminal. Each channel's LED current is set via an external current-setting resistor. The maximum current for each channel is 50mA (VIN ≥ 4.5V).
The device integrates an I2C interface (with up to ten configurable I2C addresses via an external resistor), which allows the MPQ3326 to support up to ten cascaded ICs to drive an LED array. Each channel can be enabled or disabled via the I2C.
The MPQ3326 employs separated pulse-width modulation (PWM) dimming and analog dimming, as well as 12-bit resolution PWM dimming and 6-bit analog dimming for each channel. The LED current ramp rate and phase shift can be configured to optimize EMI/EMC performance.
The device's RFSH/FLT pin can output a refresh signal. The refresh signal frequency can be set by the register.
Full protection features include LED open protection, LED short protection, and over-temperature protection (OTP). If a fault protection is triggered, then the fault indicator pulls low and the corresponding fault register is set.
The MPQ3326 is AEC-Q100 qualified, and is available in a QFN-24 (4mmx4mm) package.
The MP3326/MPQ3326-AEC1 is highly customizable. Users can configure the MP3326 and MPQ3326-AEC1 via the downloadable I2C GUI.
Communication Interface Device USB to I2C/PMBus, included with product evaluation kit or can be purchased separately.