MP3314

6-Channel, 60mA, 50V, Boost WLED Driver with Serial Interface

Datasheet

Description

The MP3314 is a 6-channel white LED (WLED) driver that operates from a 3V to 30V input voltage (V_IN) range. The MP3314 applies six internal current sources in each LED string terminal. The maximum current for each channel is 60mA. The MP3314 is designed to drive WLED arrays for LCD panels in tablets and notebook backlighting applications.

Peak current mode control and pulse-width modulation (PWM) control are employed to regulate the boost converter’s output voltage (V_OUT). The MP3314 integrates a digital serial interface that can configure the device parameters, such as the operation mode, switching frequency (f_SW), dimming mode, dimming duty, phase shift, frequency spread spectrum (FSS), and various protection thresholds.

The device supports a configurable switching slew rate and FSS function to reduce EMI. The MP3314 achieves high efficiency with a low headroom voltage for LED regulation and a low MOSFET on resistance (R_DS(ON)). Full protection features include LED open protection, LED short protection, over-current protection (OCP), over-voltage protection (OVP), and over-temperature protection.

The MP3314 is available in QFN-24 (4mmx4mm) and CSP-20 (2.4mmx1.74mm) packages.

Features & Benefits

3V to 30V Input Voltage (V_IN) Range
6 Channels, Max 60mA/Channel
50V, 150mΩ On Resistance (R_DS(ON)), Integrated Low-Side MOSFET (LS-FET)
Up to 43V Output Voltage (V_OUT)
187.5mV LED Regulation Voltage at 20mA
2% LED Current (I_LED) Accuracy at 20mA:
- 1.5% I_LED Matching at 20mA (QFN-24)
- 3% I_LED Matching at 20mA (CSP-20)
Selectable 312kHz, 625kHz, or 1250kHz Switching Frequency (f_SW)
Auto-Selected f_SW for High Efficiency
Serial Interface and External Pulse-Width Modulation (PWM) Brightness Control
Analog, PWM, and Mixed Dimming
Phase Shift Function to Reduce Noise
Configurable Switching Slew Rate and Frequency Spread Spectrum (FSS) Function to Reduce EMI
Memory to Configure Default Register Values
LED Open Protection and LED Short Protection
Over-Temperature Protection
Over-Current Protection (OCP), Inductor Short Protection, and Diode Short Protection
Available in QFN-24 (4mmx4mm) and CSP20 (2.4mmx1.74mm) Packages

Active Part Numbers:

MP3314GR-Z MP3314GR-P MP3314GC-Z MP3314GC-P

Meaning of P & Z

Related Products

EV3314-R-00A 6-Channel, 60mA, 50V, Boost WLED Driver with Digital Interface Evaluation Board

The EV3314-R-00A is an evaluation board designed to demonstrate the capabilities of the MP3314, a boost converter with six channel current sources that drives WLED arrays for LCD panels in tablets and notebook backlighting applications.

The MP3314 supports a 3V to 30V input voltage (V_IN) range and an output voltage (V_OUT) up to 43V. The device uses peak current mode control and pulse-width modulation (PWM) control to maintain boost converter regulation. The six integrated LED current source channels support a maximum of 60mA per channel.

The MP3314 employs a standard digital interface to set the operation mode, switching frequency (f_SW), dimming mode and duty, phase shift, spread spectrum, and various protection thresholds. To improve EMI performance, the MP3314 supports a configurable switching slope and spread spectrum function. The device also features high efficiency due to a low headroom voltage for LED regulation and the switching MOSFET’s small on resistance (R_DS(ON)).

For system reliability, the MP3314 integrates rich protection features, including LED open protection, LED short protection, over-current protection (OCP), over-voltage protection (OVP), and over-temperature protection.

The MP3314 is available in QFN-24 (4mmx4mm) and CSP-20 (2.4mmx1.74mm) packages. The EV3314-R-00A is a fully assembled evaluation board.

$50.00
+ tax