MPQ3326 16-Channel, 50mA/Ch, LED Driver with Separated PWM Analog Dimming 2 and I C Interface, AEC-Q100 Qualified DESCRIPTION FEATURES The MPQ3326 is a 16-channel WLED driver that Wide 4V to 16V Input Voltage Range can operate from a wide 4V to 16V input voltage 16 Channels, 50mA/Ch Maximum (V IN range. The MP3326 applies 16 internal current 4.5V) sources in each LED string terminal. The LED LED Current Configured by External current of each channel is set by an external Resistor current-setting resistor. The maximum current 6-Bit Analog Dimming for Each Channel for each channel is 50mA (V 4.5V). IN 12-Bit PWM Dimming for Each Channel 2 Selectable 220Hz, 250Hz, 280Hz, or 330Hz The device integrates an I C interface with up to 2 PWM Dimming Frequency 10 configurable I C addresses via an external Refresh Signal Output resistor. This means the MPQ3326 can support 2 up to 10 cascaded ICs to drive the LED array. I C Interface Each channel can be enabled or disabled 10 Addresses Configurable via External 2 through the I C. Resistor Configurable LED Current Slew Rate The MPQ3326 employs both separated PWM 40s Phase Shift dimming and analog dimming for each LED Fault Indicator channel, as well as 12-bit resolution PWM LED Open Protection dimming and 6-bit analog dimming for each LED Short Protection with Configurable channel. To optimize EMI/EMC performance, Threshold the LED current ramp rate and phase shift can Under-Voltage Lockout (UVLO) be configured. Over-Temperature Protection (OTP) The device can output a refresh signal from the ELV Directive II Compliant RFSH/FLT pin, and the refresh signal frequency Available in a QFN-24 (4mmx4mm) can be set by the register. Package LED open and short protection, and over- AEC-Q100 Grade 1 temperature protection (OTP) are integrated into APPLICATIONS the device. The fault indicator pulls low if a protection is triggered, and then the Automotive Lights corresponding fault register is set. Automotive Displays Instruments Clusters The MPQ3326 is AEC-Q100 qualified. It is available in a QFN-24 (4mmx4mm) package. General Industrial Displays All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. MPS, the MPS logo, and Simple, Easy Solutions are trademarks of Monolithic Power Systems, Inc. or its subsidiaries. MPQ3326 Rev. 1.0 MonolithicPower.com 1 4/28/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2021 MPS. All Rights Reserved. 2 MPQ3326 16-CH LED DRIVER WITH I C AND SEPARATED PDIM/ADIM, AEC-Q100 TYPICAL APPLICATION VIN LED116 VIN MPQ3326 RFSH/ RFSH/ FLT FLT EN SCL SDA GND ADDR ISET EN R R ADDR ISET SCL SDA Figure 1: Typical Application Circuit V BATT 5V SW MPQ4415 R1 FB R2 MPQ3326 MPQ3326 MPQ3326 2 I C SCL/SDA /FLT R R R R R R ADDR1 SET ADDR2 SET ADDR3 SET Figure 2: System Application Circuit MPQ3326 Rev. 1.0 MonolithicPower.com 2 4/28/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2021 MPS. All Rights Reserved. LED16 LED15 LED2 LED1