Order- MP3326A
MP3326A
16-Channel, 80mA/Channel, LED Driver with Separate PWM/Analog Dimming and Digital Interface
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Description
The MP3326A is a 16-channel LED driver that can operate across a wide 4.5V to 16V input voltage (VIN) range. The MP3326A 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.
The MP3326A integrates a digital interface with up to 10 configurable digital interface addresses via an external resistor. This means that the MP3326A can support up to 10 cascaded ICs to drive the LED array. Each channel can be enabled or disabled via the digital interface.
The MP3326A employs both separate 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.
The MP3326A can output a refresh signal from the RFSH/FLT pin, where the refresh signal frequency (fREFRESH) can be set via the digital interface.
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.
The MP3326A is available in a QFN-24 (4mmx4mm) package.
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Features & Benefits
- Wide 4.5V to 16V Input Voltage (VIN) Range
- 16 Channels, Max 80mA/Channel
- LED Current (ILED) Configured via an External Resistor
- 6-Bit Analog Dimming for Each Channel
- 12-Bit Pulse-Width Modulation (PWM) Dimming for Each Channel
- Selectable 220Hz, 250Hz, 280Hz, or 330Hz PWM Dimming Frequency (fPWM)
- Refresh Signal Output
- Digital Interface
- 10 Addresses Configurable via an External Resistor
- Configurable ILED Slew Rate
- 40μs Phase Shift
- Fault Indicator
- LED Open Protection
- LED Short Protection with Configurable Threshold
- Under-Voltage Lockout (UVLO) Protection
- Over-Temperature Protection (OTP)
- Available in a QFN-24 (4mmx4mm) Package
- Available in a Wettable Flank Package
Active Part Numbers:
MP3326AGRE-Z MP3326AGRE-P
Part numbers ending in P and Z are the same parts. P and Z only indicates reel size.
Meaning of P & Z
MP3326A Resources
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