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MT7261

Maxic Technology
Part Number MT7261
Manufacturer Maxic Technology
Description Boost White LED Driver
Published Nov 17, 2014
Detailed Description Maximizing IC Performance MT7261 Boost White LED Driver With High Frequency PWM Dimming DESCRIPTION The MT7261 is a Bo...
Datasheet PDF File MT7261 PDF File

MT7261
MT7261

Overview
Maximizing IC Performance MT7261 Boost White LED Driver With High Frequency PWM Dimming DESCRIPTION The MT7261 is a Boost constant current white LED driver designed for wide input voltage range from 2.
5V to 30V 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 550KHz 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 30V 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: 550KHz  Low feedback voltage: 205mV  Adjustable soft-start  Support one pin analog dimming and up to 50Khz PWM dimming  Available in SOP8 package APPLICATION  Automotive and Marine Lighting  High Power LED Driver  Torch Driver  Low Voltage LED Lighting (Landscape, Desk, Room, MR16 lighting)  LED backlighting TYPICAL APPLICATION (STEP-UP/BOOST APPLICATION) MT7261 Rev.
1.
40 www.
maxictech.
com Copyright © 2012 Maxic Technology Corporation Page 1 Maximizing IC Performance MT7261 Boost White LED Driver With High Frequency PWM Dimming ORDERING INFORMATION Device Mark MT7261 Package Type SOP8 Reel size(mm) PIN CONFIGURATIONS Reel width(mm) Quantity per reel 2500 Pin description Name COMP DIM OVP GND SW VDD VIN ISNS Pin No.
1 2 3 4 5 6 7 8 Description Compensation Pin.
Connect a 22n...


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