MPQ3359C-AEC1

MPQ3359C-AEC1

1/2/3/4-Channel, Max 160mA/Ch, Boost WLED Controller with High Dimming Ratio, AEC-Q100 Qualified

概要

The MPQ3359C-AEC1 is a step-up controller with four channel current sources. The device is designed to drive white LED (WLED) arrays as backlighting for medium-sized LCD panels.

The device uses peak current mode control as its pulse-width modulation (PWM) control architecture to regulate the boost converter. The device drives an external MOSFET to boost the output voltage (V_OUT) from a 3.5V to 40V input supply voltage (V_IN). The switching frequency (f_SW) can be configured via a resistor or an external clock.

Four channel current sources are applied to the LED cathode to adjust LED brightness. The MPQ3359C-AEC1 regulates the current in each LED string to the value set by an external current-setting resistor, with 2.5% current regulation accuracy between strings.

A low headroom voltage is provided to improve efficiency and IC thermal performance.

The MPQ3359C-AEC1 provides analog and PWM dimming with two separate input pins (EN/ADIM and PDIM, respectively). The device also has a fixed delay time between LED current (I_LEDx) channels to eliminate noise during PWM dimming.

Robust protections are included to guarantee safe device operation. Protection modes include input current (I_IN) over-current protection (OCP), cycle-by-cycle current limiting, over-voltage protection (OVP), over-temperature protection (OTP), LED short/open protection, LEDx short-to-GND protection, and V_OUT short to-GND protection.

The MPQ3359C-AEC1 is available in a QFN-20 (3mmx4mm) package, and is available in AECQ100 Grade 1.

機能と利点

3.5V to 40V Input Voltage (V_IN) Range
4 Channels with a Maximum of 160mA per Channel
Configurable Switching Frequency (f_SW) Up to 2.2MHz
External Sync SW Function
Pulse-Width Modulation (PWM) Dimming
Analog Dimming
Deep Dimming Ratio
Excellent EMI Performance and Frequency Spread Spectrum (FSS)
Fixed 100µs Delay Time between LED Current Channels during PWM Dimming (Replaces Phase Shift)
2.5% Current Matching
Cycle-by-Cycle Current Limiting
Disconnect V_OUT from V_IN
Input Over-Current Protection (OCP)
LED String Open/Short Protection
Over-Temperature Protection (OTP)
LEDx Pin Short-to-GND Protection
V_OUT Short-to-GND Protection
Ability to Disable LED4 if LED4 Is Unused
Fault Indicator Signal Output
Available in a QFN-20 (3mmx4mm) Package
Available in AEC-Q100 Grade 1

入手可能な製品番号

MPQ3359CGLE-AEC1-Z MPQ3359CGLE-AEC1-P

P＆Zの意味

関連商品

EVQ3359C-LE-00A 1/2/3/4-Channel, Max 160mA/Channel, Boost WLED Controller with High Dimming Ratio Evaluation Board, AEC-Q100 Qualified

The EVQ3359C-LE-00A is an evaluation board designed to demonstrate the capabilities of the MPQ3359C-AEC1 and MP3359C, which are four-channel, step-up converters that drive white LED (WLED) arrays as backlighting for medium-sized LCD panels.

Peak current control is used as the pulse-width modulation (PWM) control architecture to regulate the boost converter. Four-channel current sources are applied to the LED cathode to adjust LED brightness. This regulates the current in each LED string to the value set by an external current-setting resistor, with a 2.5% current regulation accuracy between strings.

The MPQ3359C-AEC1 and MP3359C’s low headroom voltage improves efficiency and IC thermal performance. The switching frequency (f_SW) is configurable via a resistor or an external clock.

The MPQ3359C-AEC1 and MP3359C provide analog and PWM dimming via the EN/ADIM and PDIM pins, respectively. The device also has a fixed delay time between LED current (I_LED) channels to eliminate noise during PWM dimming.

Protection features include input over-current protection (OCP), over-voltage protection (OVP), over-temperature protection (OTP), LED string short protection, LED string open protection, output voltage (V_OUT) short-to-GND protection, and LEDx pin short-to-GND protection.

The EVQ3359C-LE-00A is a fully assembled evaluation board. The MP3359C and MPQ3359C-AEC1 are available in a QFN-20 (3mmx4mm) package, and the MPQ3359C-AEC1 is available in AEC-Q100 Grade 1.

￥11,975.25
+ tax

MP3359C

1/2/3/4-Channel, Max 160mA/Ch, Boost WLED Controller with High Dimming Ratio