MPQ3326A
16-Channel, 80mA/Ch, LED Driver
with Separated PWM/Analog Dimming
and I2C Interface, AEC-Q100 Qualified
DESCRIPTION
FEATURES
The MPQ3326A is a 16-channel LED driver that
can operate from a wide 4.5V to 16V input
voltage (VIN) range. The MPQ3326A applies 16
internal current sources in each LED string
terminal. The LED current (ILED) of each channel
is set by an external current-setting resistor. The
maximum current for each channel is 80mA.
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Wide 4.5V to 16V Input Voltage (VIN) Range
16 Channels, Max 80mA/Ch
LED Current (ILED) Configured via External
Resistor
6-Bit Analog Dimming for Each Channel
12-Bit Pulse-Width Modulation (PWM)
Dimming for Each Channel
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The MPQ3326A integrates an I2C interface with
up to 10 configurable I2C addresses via an
external resistor. This means the MPQ3326A
can support up to 10 cascaded ICs to drive the
LED array. Each channel can be enabled or
disabled through the I2C.
•
Selectable 220Hz, 250Hz, 280Hz, or 330Hz
PWM Dimming Frequency (fPWM
Refresh Signal Output
I2C Interface
)
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10 Addresses Configurable via External
Resistor
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Configurable ILED Slew Rate
40μs Phase Shift
Fault Indicator
LED Open Protection
LED Short Protection with Configurable
Threshold
The MPQ3326A employs both separated pulse-
width modulation (PWM) dimming and analog
dimming for each LED channel, as well as 12-bit
PWM dimming and 6-bit analog dimming for
each channel. The ILED ramp rate and phase shift
can be configured to reduce EMI.
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•
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Under-Voltage Lockout (UVLO) Protection
Over-Temperature Protection (OTP)
Available in a QFN-24 (4mmx4mm)
Package
The MPQ3326A can output a refresh signal from
the RFSH/FLT pin, where the refresh signal
frequency (fREFRESH) can be set via the I2C.
Full protection features include LED open
protection, LED short protection, and over-
temperature protection (OTP). The device also
features a fault indicator. If a protection is
triggered, then the RFSH/FLT pin is pulled low,
and the corresponding fault register is set.
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Available in Wettable Flank Package
Available in AEC-Q100 Grade 1
APPLICATIONS
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Automotive Lights
Automotive Displays
Instruments Clusters
General Industrial Displays
The MPQ3326A is AEC-Q100 qualified, and is
available in a QFN-24 (4mmx4mm) package.
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.
MPQ3326A Rev. 1.0
11/7/2022
MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2022 MPS. All Rights Reserved.
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