MP3376A

8-Channel, Synchronous, Boost, WLED Driver with I2C Interface

Datasheet

概要

The MP3376A is a synchronous boost converter with eight current channels designed to drive WLED arrays for LCD panels in tablets and notebook backlighting applications.
The MP3376A uses peak-current-mode and pulse-width modulation (PWM) control to maintain boost converter regulation. The MP3376A employs a standard I2C digital interface to set the operation mode, switching frequency, full-scale current for each channel, sync or non-sync mode, dimming mode and duty, and various protection thresholds.
The MP3376A features high efficiency due to low-headroom voltage for LED regulation and a small on resistance of the switching MOSFET. The synchronous rectifier saves PCB size and total BOM cost.
The MP3376A is available in a QFN-24 (4mmx4mm) package.

機能と利点

8 Channels with Max 50mA/Channel
Synchronous Converter with LS-FET/HS-FET 160m/260mΩ On Resistance
3V to 30V Input Voltage Range
Up to 37.5V Output Voltage
520mV LED Regulation Voltage at 20mA
Max 2.5% Current Matching
350kHz / 500kHz / 650kHz / 800kHz / 950kHz / 1.2MHz / 1.8MHz / 2.4MHz Selectable Switching Frequency
A0, A1 Pins for Four I2C Addresses
0mA to 50mA Full-Scale LED Current, 8-Bit, 0.196mA/Step
Selectable Sync or Non-Sync Mode
Multi-Dimming Operation Mode Including:
- Analog Dimming through External PWM Input, 10-Bit Resolution
- Analog Dimming through I2C Interface, 10-Bit Resolution
- Mixed Dimming Mode through External PWM Input with 6.25% / 12.5% / 25% / 50% Transfer Point
- Mixed Dimming Mode through I2C interface with 6.25% / 12.5% / 25% / 50% Transfer Point
Customizable Default Register Values
Linear Smooth Dimming with 2 / 4 / 8 / 16 / 32 / 64 / 128µs Step-Slope Set
Unused LED String Auto-Disable during Start-Up
LED Short/Open, OTP, OCP, Inductor or Diode Short Protection
- 2.5 / 5 / 7.5 / 10V LED Short Threshold
- 24 / 31 / 37.5V OVP Threshold
- 1.8 / 2.5A Current Limit
Available in a QFN-24 (4mmx4mm) Package

Evaluation Tools

EV3376-R-00A Evaluation Kit 8-Channel, Synchronous, Boost, WLED Driver with I²C Interface

The MP3376 is a synchronous boost converter with 8 current channels designed to drive WLED arrays for LCD-panel in tablet and notebook backlighting applications.

The MP3376 uses peak-current mode and PWM control to maintain boost converter regulation. The MP3376 employs a standard I²C digital interface to set operation mode, switching frequency, full-scale current for each channel, sync or non-sync mode, dimming mode and duty, and various protection thresholds.

MP3376 features high efficiency with small on resistance of switching MOSFET. In addition, the synchronous rectifier saves PCB size and total BOM cost.

The MP3376 is available in QFN24 (4mmX4mm) package.

￥10,865.00
+ tax

設計リソース

シンボル、フットプリント＆3Dモデル

30種以上のフォーマット Show more