Monolithic Power Systems (MPS) MPQ3367A 6-Channel Boost WLED Drivers

Monolithic Power Systems (MPS) MPQ3367A 6-Channel Boost WLED Drivers are constant-frequency, configurable, and peak current mode step-up converters. These drivers are designed to drive white LED arrays as backlighting for small or medium-sized LCD panels. The MPQ3367A 6-channel boost WLED drivers feature internal 100mΩ, 50V MOSFET, 3.5V to 36V input voltage range, 2.5% current matching, and an I²C interface with 3 selectable IC addresses. These drivers also feature configurable f_SW up to 2.2MHz, excellent EMI performance, cycle-by-cycle current limit, and phase shifting function for Pulse Width Modulation (PWM) dimming.

The MPQ3367A 6-channel boost WLED drivers provide analog, PWM, and mix dimming mode with a PWM input. The dimming mode can be selected with the I²C interface or the MIX/AD pin. These drivers are available in AEC-Q100 Grade 1 and QFN-24 (4mm x 4mm) packages. The MPQ3367A boost WLED drivers are ideal for use in tablets, notebooks, and automotive display applications.

Features

6 channels with a maximum of 150mA per channel
Internal 100mΩ, 50V MOSFET
Up to 2.2MHz configurable f_SW
External sync switching frequency function
Multi-dimming operation mode through PWM input:
- Direct PWM dimming
- Analog dimming
- Mix dimming with 25% or 12.5% transfer point
5000:1 dimming ratio in PWM dimming mode when f_PWM ≤ 200Hz
200:1 dimming ratio at analog dimming through PWM dimming signal input
Excellent EMI performance and frequency spread spectrum
I²C interface with 3 selectable IC addresses
Phase shift function for PWM dimming

2.5% current matching
Cycle-by-cycle current limit
Disconnect V_OUT from V_IN
Optional LED current auto-decrease at high temperatures
LED short/open protection, Over-Current Protection (OCP), Over-Temperature Protection (OTP), and inductor short protection
Configurable LED short threshold
Configurable OVP threshold
Fault indicator signal output
Available in a QFN-24 (4mm x 4mm) package
Available in AEC-Q100 Grade 1
3.5V to 36V input voltage range
-40°C to 125°C operating temperature range