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MT7261

APPLICATION
Automotive and Marine Lighting
High Power LED Driver
Torch Driver
Low Voltage LED Lighting (Landscape, Desk, Room, MR16 lighting)
LED backlighting

Product

Description

Vin(V)

Max drive capacity

PFC

Dimming

Package

PDF

MT7261

Buck-boost,Buck,
Boost

2.5V~40V

7W

-

PWM,Linear

SOP8

MT7261

DESCRIPTION
The MT7261 is a Boost constant current white LED driver designed for wide input voltage range from 2.5V to 40V system rail, drives up to 7X1W power with AC12V/DC12V input voltage. Current mode and fixed frequency operation provides fast transient response and eases loop stabilization. With a current sense amplifier threshold of 205mV, the LED current is programmable with one external current sense resistor and the power loss is minimized. The 460kHz operating frequency minimizes external inductor, input and output capacitor. The MT7261 supports both PWM and analog dimming by a single control pin. Fault condition protection includes over voltage protection (OVP), cycle-by-cycle peak current limiting and thermal shutdown. The MT7261 is available in SOP8 packages.

FEATURES
2.5V to 40V input/output voltage range
High efficiency up to 95%
Cycle by Cycle Over Current Protection
Internal 0.2ohm power MOSFET
LED temperature protection
Stable with Low ESR Ceramic Capacitor
OTP and OVP protection
External setting over voltage protection
Fixed switching frequency: 460kHz
Frequency Jitter to lower EMI
Low feedback voltage: 205mV
Adjustable soft-start
Support one pin analog dimming and up to 50kHz PWM dimming
Available in SOP8 package

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