Click here to ask about the production status of specific part numbers. MAX25510/MAX25511 4-Channel, Low-Voltage, 120mA LED Backlight Drivers with Integrated Boost Converter General Description Benefits and Features The MAX25510/MAX25511 are 4-channel, white-LED Operate down to 3V on Battery Input after Start-Up backlight drivers with an integrated current-mode boost Wide Boost Duty Cycle to Support Low Input converter that operate over a switching frequency range Voltage of 400kHz to 2.2MHz and incorporate spread spectrum. Boost or SEPIC Current-Mode DC-DC Controller Phase-shifting of the output channels is included as an op- 400kHz to 2.2MHz Operating Frequency Range tion to further reduce EMI. Spread Spectrum Available The devices provide up to 120mA per channel and include Can Be Synchronized to an External Clock a control output for an external nMOS series switch. LED Current Sinks These devices are capable of operating down to 3V after Up to 120mA Output Current per String start-up. Low OUT Regulation Voltage for Best Efficiency The MAX25510 has a boost current limit of 3A (min), while Optional Phase-Shifting of Outputs the MAX25511 implements a higher minimum current limit 16667:1 Dimming Ratio at 200Hz of 4.5A for increased output power. NTC Input for LED Current Foldback The MAX25510/MAX25511 are available in a compact Analog Dimming Capable TQFN package and operate over the temperature range Built-In Automatic Fading Functionality -40C to +125C. FLTB Output Provides Diagnostic Information Shorted or Open LEDs Thermal Shutdown Applications Output Undervoltage Automotive Instrument Clusters Automotive Central Information Displays Compact, 4mm x 4mm TQFN Package Automotive Head-Up Displays AEC-Q100 Grade 1 Ordering Information appears at end of data sheet. 19-101184 Rev 0 8/21MAX25510/MAX25511 4-Channel, Low-Voltage, 120mA LED Backlight Drivers with Integrated Boost Converter Simplified Block Diagram COMP BSTMON RSDT 1.5V 0.95V SSDONE 0.35V V18 UV OV DRIVE gM DRAIN LEDUNUSED LOGIC PWM EAREF COMPARATOR LEDSHORT COMP ARRAY LEDOPEN 9 SHORTGND DAC 4 BOOSTON 4 COMPH OUT LODIM COMPL 4 CURRENT SENSE SSDONE PGND 8 MAX25510MAX25510 IREF DAC SLOPE I LIM MAX25511MAX25511 COMP I LIMLV 20MHz BOOST CLOCK RT IMON OSC CONTROL LOGIC IN 4 4 CCRANK LINEAR HIGH-/LOW-VOLTAGE EN VINUV 4x REGULATOR DETECT LDUMP LEDGND THERMAL DIM BANDGAP V18 VBG SENSOR UVLO CHARGE V18 UVLO IN NGATE PUMP POR LDUMP IREF REFERENCE CURRENT GENERATION GND ADIM SET FLTB ISET TEMP www.maximintegrated.com Maxim Integrated 2