The MAX25611A/MAX25611B/MAX25611C/MAX25611Dare single-channel HBLED drivers for automotive front light applications such as high beam, low beam, daytime running light (DRL), turn indicator, fog light, and other LED lights. It can take an input voltage from 5V to 36V and can drive a string of LEDs with a maximum output voltage of 65V.The MAX25611A/B/C/D sense output current at the high side of the LED string. High-side currentsensing is required to protect for shorts from the output to the ground or battery input. It is also the most flexible scheme for driving LEDs, allowing boost, high-side buck, SEPIC mode, or buck-boost mode configurations. The PWM input provides LED dimming ratios of up to 5000:1, and the REFI input provides additional analog dimming capability in the MAX25611A/B/C/D. The MAX25611A/B/C/D have built-in spread-spectrum modulation for improved electromagnetic compatibility performance. The MAX25611A/B/C/D can also be used in zeta and Cuk converter configurations if it is necessary in some applications.The MAX25611A/B/C/D are available in a space-saving 12-pin SWTQFN-EP package. They are specified to operate over the -40°C to +125°C automotive temperature range. The switching frequency is internally set at 350kHzfor the MAX25611A/MAX25611C and 2.2MHz for theMAX25611B/MAX25611D. Design Solution: Keep Your Head Up with a High-Dimming Ratio Automotive Led Driver ›ApplicationsAutomotive Exterior LightingCommercial, Industrial, and Architectural LightingDaytime Running Lights (DRLs)Fog Lights and Adaptive Front Light AssembliesHead-Up DisplaysHigh Beam/Low Beam/Signal/Position lights

The MAX25612/MAX25612B is a single-channel high-brightness LED (HB LED) driver for automotive front-light applications such as high beam, low beam, daytime running light (DRL), turn indicator, fog light and other LED lights. It can take an input voltage from 5V to 48V and can drive a string of LEDs with a maximum output voltage of 65V. The MAX25612/MAX25612B is fully synchronous and is suitable for boost and buck-boost applications that need synchronous rectification providing efficiencies greater than 90%.The MAX25612/MAX25612B senses output current at the high side of the LED string. High-side current sensing is required to protect against shorts from the output to the ground or battery input. It is also the most flexible scheme for driving LEDs, allowing boost, high-side buck, or buck-boost mode configurations. The PWM input provides LED dimming ratios of up to 5000:1, and the ICTRL input provides additional analog dimming capability in the MAX25612/MAX25612B. The MAX25612/MAX25612B also includes a active-low FLT flag that indicates open string, shorted string, and thermal shutdown. The MAX25612/MAX25612B has built-in spread-spectrum modulation for improved electromagnetic compatibility performance. The MAX25612/MAX25612B is available in a space-saving (4mm x 4mm), 20-pin side-wettable TQFN or a 20-pin TSSOP package and is specified to operate overthe -40°C to +125°C automotive temperature range.ApplicationsAutomotive Exterior Lighting:Commercial, Industrial, and Architectural LightingDaytime Running Lights (DRLs)Fog Light and Adaptive Front-Light AssembliesHigh-Beam/Low-Beam/Signal/Position Lights

The MAX25612/MAX25612B is a single-channel high-brightness LED (HB LED) driver for automotive front-light applications such as high beam, low beam, daytime running light (DRL), turn indicator, fog light and other LED lights. It can take an input voltage from 5V to 48V and can drive a string of LEDs with a maximum output voltage of 65V. The MAX25612/MAX25612B is fully synchronous and is suitable for boost and buck-boost applications that need synchronous rectification providing efficiencies greater than 90%.The MAX25612/MAX25612B senses output current at the high side of the LED string. High-side current sensing is required to protect against shorts from the output to the ground or battery input. It is also the most flexible scheme for driving LEDs, allowing boost, high-side buck, or buck-boost mode configurations. The PWM input provides LED dimming ratios of up to 5000:1, and the ICTRL input provides additional analog dimming capability in the MAX25612/MAX25612B. The MAX25612/MAX25612B also includes a active-low FLT flag that indicates open string, shorted string, and thermal shutdown. The MAX25612/MAX25612B has built-in spread-spectrum modulation for improved electromagnetic compatibility performance. The MAX25612/MAX25612B is available in a space-saving (4mm x 4mm), 20-pin side-wettable TQFN or a 20-pin TSSOP package and is specified to operate overthe -40°C to +125°C automotive temperature range.ApplicationsAutomotive Exterior Lighting:Commercial, Industrial, and Architectural LightingDaytime Running Lights (DRLs)Fog Light and Adaptive Front-Light AssembliesHigh-Beam/Low-Beam/Signal/Position Lights

The MAX20050–MAX20053 are high-brightness LED (HBLED) drivers for automotive exterior lighting applications.Consisting of a fully synchronous step-down converterwith integrated MOSFETs, the devices are capable ofdriving a series string of LEDs at up to 2A, with a minimumnumber of external components. The MAX20050/MAX20052 utilize internal loop compensation to minimizecomponent count, while the MAX20051/MAX20053/MAX20053D useexternal compensation for full flexibility.The wide 4.5V to 65V input supply range supports extremeautomotive cold crank and load-dump conditions. A low- andhigh-switching frequency option (400kHz or 2.1MHz)provides the designer with the flexibility to optimize forsolution size or efficiency, while avoiding interferencewithin the AM band. Spread spectrum provides furtheroptions for the designer to reduce EMI at the system level.The MAX20050/MAX20051 have an internal switchingfrequency of 400kHz, while the MAX20052/MAX20053have an internal switching frequency of 2.1MHz. In addition,the MAX20051B has spread spectrum disabled.High-side current regulation means only a singleconnection to the LED string is required; grounding of thestring can be done locally. In addition to PWM dimming,the ICs provide analog dimming using the REFI pin. Fullscalecurrent regulation accuracy is ±2.5%, while theaccuracy is ±8% at 10% of full-scale over the full temperaturerange of -40°C to +125°C. A 5V, 10mA LDO output isavailable for biasing other circuits.Fault-protection mechanisms include output overload,short-circuit, and device overtemperature protection. Thedevices are specified for operation over the full -40°C to+125°C temperature range and are available in thermallyenhanced 12-pin (3mm x 3mm) TDFN and 14-pin (5mm x4.4mm) TSSOP packages with an exposed pad. Design Solution: Driver Monitoring Systems Need a New Breed of IR-LEDDrivers ›ApplicationsClearance Lamps (CLLs)Commercial, Industrial, and Architectural LightingCorner Lamps (CLs)Daytime Running Lamps (DRLs)Driver Monitoring Systems (DMS)Fog LampsHead LampsRear Lamps

The MAX20050–MAX20053 are high-brightness LED (HBLED) drivers for automotive exterior lighting applications.Consisting of a fully synchronous step-down converterwith integrated MOSFETs, the devices are capable ofdriving a series string of LEDs at up to 2A, with a minimumnumber of external components. The MAX20050/MAX20052 utilize internal loop compensation to minimizecomponent count, while the MAX20051/MAX20053/MAX20053D useexternal compensation for full flexibility.The wide 4.5V to 65V input supply range supports extremeautomotive cold crank and load-dump conditions. A low- andhigh-switching frequency option (400kHz or 2.1MHz)provides the designer with the flexibility to optimize forsolution size or efficiency, while avoiding interferencewithin the AM band. Spread spectrum provides furtheroptions for the designer to reduce EMI at the system level.The MAX20050/MAX20051 have an internal switchingfrequency of 400kHz, while the MAX20052/MAX20053have an internal switching frequency of 2.1MHz. In addition,the MAX20051B has spread spectrum disabled.High-side current regulation means only a singleconnection to the LED string is required; grounding of thestring can be done locally. In addition to PWM dimming,the ICs provide analog dimming using the REFI pin. Fullscalecurrent regulation accuracy is ±2.5%, while theaccuracy is ±8% at 10% of full-scale over the full temperaturerange of -40°C to +125°C. A 5V, 10mA LDO output isavailable for biasing other circuits.Fault-protection mechanisms include output overload,short-circuit, and device overtemperature protection. Thedevices are specified for operation over the full -40°C to+125°C temperature range and are available in thermallyenhanced 12-pin (3mm x 3mm) TDFN and 14-pin (5mm x4.4mm) TSSOP packages with an exposed pad. Design Solution: Driver Monitoring Systems Need a New Breed of IR-LEDDrivers ›ApplicationsClearance Lamps (CLLs)Commercial, Industrial, and Architectural LightingCorner Lamps (CLs)Daytime Running Lamps (DRLs)Driver Monitoring Systems (DMS)Fog LampsHead LampsRear Lamps

The MAX20050–MAX20053 are high-brightness LED (HBLED) drivers for automotive exterior lighting applications.Consisting of a fully synchronous step-down converterwith integrated MOSFETs, the devices are capable ofdriving a series string of LEDs at up to 2A, with a minimumnumber of external components. The MAX20050/MAX20052 utilize internal loop compensation to minimizecomponent count, while the MAX20051/MAX20053/MAX20053D useexternal compensation for full flexibility.The wide 4.5V to 65V input supply range supports extremeautomotive cold crank and load-dump conditions. A low- andhigh-switching frequency option (400kHz or 2.1MHz)provides the designer with the flexibility to optimize forsolution size or efficiency, while avoiding interferencewithin the AM band. Spread spectrum provides furtheroptions for the designer to reduce EMI at the system level.The MAX20050/MAX20051 have an internal switchingfrequency of 400kHz, while the MAX20052/MAX20053have an internal switching frequency of 2.1MHz. In addition,the MAX20051B has spread spectrum disabled.High-side current regulation means only a singleconnection to the LED string is required; grounding of thestring can be done locally. In addition to PWM dimming,the ICs provide analog dimming using the REFI pin. Fullscalecurrent regulation accuracy is ±2.5%, while theaccuracy is ±8% at 10% of full-scale over the full temperaturerange of -40°C to +125°C. A 5V, 10mA LDO output isavailable for biasing other circuits.Fault-protection mechanisms include output overload,short-circuit, and device overtemperature protection. Thedevices are specified for operation over the full -40°C to+125°C temperature range and are available in thermallyenhanced 12-pin (3mm x 3mm) TDFN and 14-pin (5mm x4.4mm) TSSOP packages with an exposed pad. Design Solution: Driver Monitoring Systems Need a New Breed of IR-LEDDrivers ›ApplicationsClearance Lamps (CLLs)Commercial, Industrial, and Architectural LightingCorner Lamps (CLs)Daytime Running Lamps (DRLs)Driver Monitoring Systems (DMS)Fog LampsHead LampsRear Lamps

The MAX3948 is a 3.3V, multirate, low-power laser diode driver designed for Ethernet, Fibre Channel, and SONET transmission systems at data rates up to 11.3Gbps. This device is optimized to drive a differential transmitter optical subassembly (TOSA) with a 25Ω flex circuit. The unique design of the output stage enables DC-coupling to unmatched TOSAs, thereby lowering transmitter power consumption by more than 100mW. The MAX3948 receives differential AC-coupled signals with on-chip termination. It can deliver laser modulation currents of up to 85mA at an edge speed of 26ps (20% to 80%) into a 5Ω external differential load. The device is designed to have a high-bandwidth differential signal path with on-chip back termination resistors integrated into its outputs. An input equalization block can be activated to compensate for SFP+/QSFP+ host connector losses. The integrated DC circuit provides programmable laser DC currents up to 61mA. Both the laser DC current generator and the laser modulator can be disabled from a single pin. The device offers one dedicated pin (VSEL) to program up to four channel addresses for multichannel applications. The use of a 3-wire digital interface reduces the pin count while permitting adjustment of input equalization, polarity, output deemphasis, and modulation and DC currents without the need for external components. The MAX3948 is available in a 3mm × 3mm, 16-pin TQFN package, and is specified for the -40°C to +95°C extended temperature range.Applications10GBASE-LR SFP+ Optical Transceivers10GBASE-LRM SFP+ Optical Transceivers40GBASE-LR4 QSFP+ Optical TransceiversOC192-SR SFP+ SDH/SONET Transceivers

The MAX16813 high-efficiency, high-brightness LED (HB LED) driver provides four integrated LED current-sink channels. An integrated current-mode switching controller drives a DC-DC converter that provides the necessary voltage to multiple strings of HB LEDs. The device accepts a wide 4.75V to 40V input voltage range and withstands direct automotive load-dump events. The wide input range allows powering HB LEDs for small- to medium-sized LCD displays in automotive and general lighting applications.An internal current-mode switching DC-DC controller supports boost or SEPIC topologies and operates in an adjustable frequency range between 200kHz and 2MHz. An integrated spread-spectrum mode helps reduce EMI. Current-mode control with programmable slope compensation provides fast response and simplifies loop compensation. An adaptive output-voltage control scheme minimizes power dissipation in the LED current-sink paths. The device has a separate p-channel drive (PGATE) pin that is used for output undervoltage protection. Whenever the output falls below the threshold, the external p-MOSFET is latched off, disconnecting the input source. Cycling the EN or the input supply is required to restart the converter. The external p-MOSFET is off when the EN pin is below 0.3V (typ). The shutdown current is 1µA (typ) at an input voltage of 12V.The device consists of four identical linear current-sink channels, adjustable from 20mA to 150mA with an accuracy of ±3% using a single external resistor. Multiple channels can be connected in parallel to achieve higher current per LED string. The device also features a unique pulsed dimming control through a logic input (DIM), with minimum pulse width as low as 500ns. Protection features include output overvoltage, open-LED detection and protection, programmable shorted LED detection and protection, output undervoltage protection and detection, and overtemperature protection. The device operates over the -40°C to +125°C automotive temperature range. The MAX16813 is available in 20-pin (6.5mm x 4.4mm) TSSOP and 20-pin (4mm x 4mm) TQFN packages.ApplicationsArchitectural, Industrial, and Ambient LightingAutomotive Displays LED BacklightsAutomotive RCL, DRL, Front Position, and Fog LightsLCD TV and Desktop Display LED Backlights

The MAX16813 high-efficiency, high-brightness LED (HB LED) driver provides four integrated LED current-sink channels. An integrated current-mode switching controller drives a DC-DC converter that provides the necessary voltage to multiple strings of HB LEDs. The device accepts a wide 4.75V to 40V input voltage range and withstands direct automotive load-dump events. The wide input range allows powering HB LEDs for small- to medium-sized LCD displays in automotive and general lighting applications.An internal current-mode switching DC-DC controller supports boost or SEPIC topologies and operates in an adjustable frequency range between 200kHz and 2MHz. An integrated spread-spectrum mode helps reduce EMI. Current-mode control with programmable slope compensation provides fast response and simplifies loop compensation. An adaptive output-voltage control scheme minimizes power dissipation in the LED current-sink paths. The device has a separate p-channel drive (PGATE) pin that is used for output undervoltage protection. Whenever the output falls below the threshold, the external p-MOSFET is latched off, disconnecting the input source. Cycling the EN or the input supply is required to restart the converter. The external p-MOSFET is off when the EN pin is below 0.3V (typ). The shutdown current is 1µA (typ) at an input voltage of 12V.The device consists of four identical linear current-sink channels, adjustable from 20mA to 150mA with an accuracy of ±3% using a single external resistor. Multiple channels can be connected in parallel to achieve higher current per LED string. The device also features a unique pulsed dimming control through a logic input (DIM), with minimum pulse width as low as 500ns. Protection features include output overvoltage, open-LED detection and protection, programmable shorted LED detection and protection, output undervoltage protection and detection, and overtemperature protection. The device operates over the -40°C to +125°C automotive temperature range. The MAX16813 is available in 20-pin (6.5mm x 4.4mm) TSSOP and 20-pin (4mm x 4mm) TQFN packages.ApplicationsArchitectural, Industrial, and Ambient LightingAutomotive Displays LED BacklightsAutomotive RCL, DRL, Front Position, and Fog LightsLCD TV and Desktop Display LED Backlights

The MAX16813 high-efficiency, high-brightness LED (HB LED) driver provides four integrated LED current-sink channels. An integrated current-mode switching controller drives a DC-DC converter that provides the necessary voltage to multiple strings of HB LEDs. The device accepts a wide 4.75V to 40V input voltage range and withstands direct automotive load-dump events. The wide input range allows powering HB LEDs for small- to medium-sized LCD displays in automotive and general lighting applications.An internal current-mode switching DC-DC controller supports boost or SEPIC topologies and operates in an adjustable frequency range between 200kHz and 2MHz. An integrated spread-spectrum mode helps reduce EMI. Current-mode control with programmable slope compensation provides fast response and simplifies loop compensation. An adaptive output-voltage control scheme minimizes power dissipation in the LED current-sink paths. The device has a separate p-channel drive (PGATE) pin that is used for output undervoltage protection. Whenever the output falls below the threshold, the external p-MOSFET is latched off, disconnecting the input source. Cycling the EN or the input supply is required to restart the converter. The external p-MOSFET is off when the EN pin is below 0.3V (typ). The shutdown current is 1µA (typ) at an input voltage of 12V.The device consists of four identical linear current-sink channels, adjustable from 20mA to 150mA with an accuracy of ±3% using a single external resistor. Multiple channels can be connected in parallel to achieve higher current per LED string. The device also features a unique pulsed dimming control through a logic input (DIM), with minimum pulse width as low as 500ns. Protection features include output overvoltage, open-LED detection and protection, programmable shorted LED detection and protection, output undervoltage protection and detection, and overtemperature protection. The device operates over the -40°C to +125°C automotive temperature range. The MAX16813 is available in 20-pin (6.5mm x 4.4mm) TSSOP and 20-pin (4mm x 4mm) TQFN packages.ApplicationsArchitectural, Industrial, and Ambient LightingAutomotive Displays LED BacklightsAutomotive RCL, DRL, Front Position, and Fog LightsLCD TV and Desktop Display LED Backlights