Atmel LED Drivers MSL1061/MSL1064 6-string PWM LED Driver with Digitally Compensated, 1.1MHz, 2 48V Boost Regulator, 1.5% Current Balance, I C Interface Datasheet BriefAtmel LED Drivers-MSL1061/MSL1064 6-string PWM LED Driver with Digitally Compensated, 1.1MHz, 2 48V Boost Regulator, 1.5% Current Balance, I C Interface The MSL1061/64 incorporates a current mode PWM boost regulator with 50V internal switch and a wide, 4.75V to 36V input voltage range. The 1.1MHz switching frequency uses a small-sized inductor and output capacitors General Description while maintaining high efficiency and low ripple voltage and noise. The boost regulator uses digital control and requires no external compensation. 2 An I C/SMB compatible serial interface operates up to 1MHz, giving access The Atmel LED Drivers- to internal 8-bit PWM dimming and 4-bit analog current adjustment for 12- MSL1061 and MSL1064 are bit current control. Individual string enable and fault reporting are available. 2 LED drivers with integrated The MSL1061 operates with one of four I C slave addresses selected from a 2 single input pin (AD0), whereas the lower cost MSL1064 has one fixed I C boost regulators capable of slave address. driving six LED strings at 2 The MSL1061/64 is also easy to employ without using an I C interface, 30mA up to 48V for lighting dimming with an external PWM signal. applications to 8W, allowing Analog dimming of LED string current is available for use with an ambient up to 72 LEDs per driver light sensor (ALS) and/or temperature management with a thermistor or IC backlighting applications. temperature sensor. The MSL1064 comes in a 5 x 5mm, 24-pin TQFN package, and the MSL1061 in a 5 x5mm, 28-pin TQFN. Both packages are lead-free, halogen-free and RoHS-compliant, and operate over a -40C to 85C temperature range. Applications Long Life, Efficient LED Backlighting for: Notebook PCs and Desktop PC Monitors Medical and Industrial Instrumentation Portable Media Players (PMPs) Automotive Audio-visual Displays Traffic Lights Signage Ordering Information PART DESCRIPTION PACKAGE MSL1061AV 6-ch LED driver 28-pin, 5x5x0.75mm TQFN MSL1064AW 6-ch LED driver 24-pin, 5x5x0.75mm TQFN 2 Atmel LED Drivers-MSL1061/MSL1064