MT7261 datasheet, PDF - EEWORLD Datasheet

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MT7261: DescriptionHigh frequency PWM dimming boost white LED constant current driver chip; CategoryLED optoelectronic/LED; File Size734KB，11 Pages; ManufacturerMAXIC; Websitehttp://www.maxictech.com/; Maxicon Technology (Beijing) Co., Ltd. is a national high-tech enterprise focusing on the design and sales of LED lighting drivers and analog power chips. It was founded by experts from the National Thousand Talents Plan and a number of technical and management experts who returned from Silicon Valley in the United States.

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MT7261 Overview

High frequency PWM dimming boost white LED constant current driver chip

Features

MT7261 is a 2.5V~30V wide input range, boost type white light LED constant current driver chip, which can achieve 7×1W driving capability at AC12V/DC12V input voltage.

MT7261 uses a fixed operating frequency and current mode to adjust the LED current. The system has fast transient response, stable loop and simple design.

MT7261 uses high-level current detection technology, and can set the average operating current of the LED through an external resistor. The low reference voltage of 205mV effectively reduces power loss and improves efficiency. The fixed operating frequency of 460kHz minimizes external inductance, input and output capacitance.

MT7261 supports PWM dimming and analog dimming through a single control pin.

The chip includes protection mechanisms such as overvoltage protection (OVP), overcurrent protection (OCP) and overtemperature protection (OTP) to ensure that the system works safely and reliably.

Parameters

. Input voltage range: 2.5V～30V

. Up to 95% efficiency

. Overcurrent protection

. Built-in 0.2ohm power MOS tube

. LED over-temperature protection

. Use low equivalent series resistance (ERS) ceramic capacitors to ensure system stability

. Over temperature protection and over current protection

. Overvoltage protection externally adjustable

. Fixed 460KHz operating frequency

. Frequency jitter technology reduces electromagnetic interference

. Low feedback voltage: 205mV

. Adjustable soft start

. Support analog dimming and PWM dimming up to 50KHz

. SOP8 package

Description: Step-up

Vin(V)：2.5V～30V

Maximum driving capability: 8W

Power factor: --

Dimming method: PWM, Linear

Application

Boost MR16, car lights, emergency lights, solar driven lights

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