Analog Devices Inc./Maxim Integrated

The LT8415 is an ultralow power boost converter with two integrated complementary MOSFET half-bridges (N- and P-channel), integrated power switch, Schottky diode and output disconnect circuitry. The N-channel and P-channel MOSFETs in each half-bridge are synchronously controlled by a single input pin, and never turn on at the same time in typical applications.The boost regulator controls power delivery by varying both the peak inductor current and switch off-time. This control scheme results in low output voltage ripple as well as high efficiency over a wide load range. The quiescent current is a low 10.5μA, which is further reduced to 0μA in shutdown. The internal disconnect circuitry allows the output voltage to be blocked from the input during shutdown. High value (12.4M/0.4M) resistors are integrated on chip for output voltage detection, significantly reducing input referred quiescent current. The LT8415 also features a comparator built into theSHDNpin, overvoltage protection for the CAP, VOUT, OUT1 and OUT2 pins, built in soft start and comes in a tiny 12-pin 3mm × 2mm DFN package.ApplicationsSensor PowerRF Mems Relay PowerLow Power Actuator Bias/ControlLiquid Lens Driver

The LT8418 is a 100V half-bridge GaN driver that integrates top and bottom driver stages, driver logic control, and protections. It can be configured into synchronous half-bridge, full-bridge topologies, or buck, boost, and buck-boost topologies. The LT8418 provides strong current sourcing/sinking capability with 0.6Ω pull-up and 0.2Ω pull-down resistance. It also integrates smart integrated bootstrap switch to generate a balanced bootstrap voltage from VCCwith a minimum dropout voltage.The LT8418 provides split gate drivers to adjust the turn-on and turn-off slew rates of GaN FETs to suppress ringing and optimize EMI performance. All driver inputs and outputs have default low-state to prevent GaN FETs from false turn-on. The inputs of the LT8418, INT, and INB are independent and TTL logic compatible. Meanwhile, the LT8418 performs with a fast propagation delay of 10ns and maintains an excellent delay matching of 1.5ns between the top and bottom channels, making it suitable for high-frequency DC-DC converters, motor drivers, and class-D audio amplifiers. In addition, the LT8418 employs the WLCSP package to minimize parasitic inductance, enabling its wide use in high-performance and high-power density applications.ApplicationsHigh Frequency DC-DC Switching Power ConvertersHalf-Bridge, Full-Bridge, Push-Pull ConvertersData Center Power SuppliesMotor Drivers, Class-D Audio AmplifiersConsumer, Industrial, and Automotive

The LT8440 is a power conditioner for intrinsically safe, industrial ethernet ports in hazardous or explosive environments. The internal pass transistor is normally fully enhanced to deliver power to the load efficiently. In case of load circuit failures, the FET is modulated to limit the power to less than 650mW if line voltage ≤ 18.5V or less than 35mA if line voltage > 18.5V. The internal shunt transistor draws current parallel with the load up to the 500mW minimum guaranteed for Class A load power ports in compliance with Advanced Physical Layer (APL) standard or to 20mA minimum guaranteed if line voltage > 18.5V. The line voltage is sensed with two input pins that are insensitive to polarity, which can be connected in front of the port rectifier and incorporate the rectifier power consumption in the limitation of total power. The line current is measured as a voltage across the internal sense resistor, and the shunt current and the current limit are automatically adjusted for line voltage.The LT8440 is packaged in an 8-lead SOIC with pin spacing that satisfies the device under coating specification so that shorts from pin to pin are countable faults when the circuit is examined for intrinsic safety at the highest levels of protection.APPLICATIONSIndustrial EthernetAdvanced Physical LayerCurrent Limiting

The LT8471 is a dual PWM DC/DC converter containing two internal 2A, 50V switches and an additional 500mA switch to facilitate step-down and inverting conversion. Each 2A channel can be independently configured as a buck, boost, SEPIC, flyback or inverting converter. Capable of generating positive and negative outputs from a single input rail, the LT8471 is ideal for many local power supply designs.The LT8471 has an adjustable oscillator, set by a resistor placed from the RT pin to ground. Additionally, the LT8471 can be synchronized to an external clock. The free running or synchronized switching frequency range of the part can be set between 100kHz and 2MHz.Additional features such as frequency foldback, soft-start, and power good are integrated. The LT8471 is available in 20-lead TSSOP and 28-Lead (4mm × 5mm) QFN packages.ApplicationsDual Rail Power for Signal Chain.Buck/Buck, Buck/Boost, Boost/Boost, Boost/Invert, Invert/Invert, Buck/Invert

The LT8490 is a buck-boost switching regulator battery charger that implements a constant-current constantvoltage (CCCV) charging profile used for most battery types, including sealed lead-acid (SLA), flooded, gel and lithium-ion. The device operates from input voltages above, below or equal to the output voltage and can be powered by a solar panel or a DC power supply. On-chip logic provides automatic maximum power point tracking (MPPT) for solar powered applications. The LT8490 can perform automatic temperature compensation by sensing an external thermistor thermally coupled to the battery. STATUS and FAULT pins containing charger information can be used to drive LED indicator lamps. The device is available in a low profile (0.75mm) 7mm × 11mm 64-lead QFN package.ApplicationsSolar Powered Battery ChargersMultiple Types of Lead-Acid Battery ChargingLi-Ion Battery ChargerBattery Equipped Industrial or Portable Military Equipment

The LT8494 is an adjustable frequency (250kHz to 1.5MHz) monolithic switching regulator. Quiescent current can be less than 7μA when operating and is ~0.3μA when SWEN is low. The LT8494 can be configured as either a SEPIC, boost or flyback converter.The low ripple Burst Mode operation maintains high efficiency at low output current while keeping output ripple below 10mV. Dual supply pins (VINand BIAS) allow the part to automatically operate from the most efficient supply. Input supply voltage can be up to 60V for SEPIC topologies and up to 32V (with ride-through up to 60V) for boost and flyback topologies. After start-up, battery life is extended since the part can draw current from its output (BIAS) even when VINvoltage drops below 2.5V.Using a resistor divider on the SWEN pin provides a programmable undervoltage lockout (UVLO) for the converter. A power good flag signals when VOUTreaches 92% of the programmed output voltage.Additional features such as frequency foldback and soft-start are integrated. The LT8494 is available in 20-lead QFN and 20-lead TSSOP packages with exposed pads for low thermal resistance. Fault tolerance in the TSSOP allows for adjacent pin shorts or an open without raising the output voltage above its programmed value.ApplicationsAutomotive ECU PowerPower for Portable ProductsIndustrial Supplies

The LT8495 is an adjustable frequency (250kHz to 1.5MHz) monolithic switching regulator with a power-on reset and watchdog timer. Quiescent current can be less than 9μA when operating and is ~0.3μA when SWEN, WDE andRSTINare low. Configurable as a SEPIC, boost or flyback converter, the low ripple Burst Mode operation maintains high efficiency at low output current while keeping output ripple below 10mV. Dual supply pins (VINand BIAS) allow the part to automatically operate from the most efficient supply. Input supply voltage can be up to 60V for SEPIC topologies and up to 32V (with ride-through up to 60V) for boost and flyback topologies. After start-up, battery life is extended since the part can draw current from its output (BIAS) even when VINvoltage drops below 2.5V.The reset and watchdog timeout periods are independently adjustable using external capacitors. Using a resistor divider on the SWEN pin provides a programmable undervoltage lockout (UVLO) for the converter. A resistor divider connected toRSTINprovides UVLO control that asserts theRSTpin.Additional features such as frequency foldback and soft-start are integrated. Fault tolerance in the TSSOP allows for adjacent pin shorts or an open without raising the output voltage above its programmed value. The LT8495 is available in 20-lead QFN and 20-lead TSSOP packages with exposed pads for low thermal resistance.ApplicationsAutomotive ECU PowerPower for Portable ProductsIndustrial Supplies

The LT8500 is a pulse width modulation (PWM) generator with 48 independent channels. Each channel has an individually adjustable 12-bit (4096-step) PWM register and a 6-bit (64-step) ±50% correction register. All controls are programmable via a simple serial data interface. Three banks of 16-channels each can be configured such that they operate 120° out-of-phase with each other.The LT8500 features two diagnostic information flags: synchronization error and open LED. The flags are sent, with additional state information, on the serial data interface during status read back. The 50MHz cascadable serial data interface includes buffering and skew-balancing, making the chip suitable for PWM intensive applications such as large screen LCD dynamic backlighting and mono-, multi- and full-color LED displays. The LT8500 is also ideally suited to control three LT3595A LED drivers.ApplicationsLarge Screen Display LED BacklightingMono-, Multi-, Full-Color LED DisplaysLED Billboards and SignboardsMotor ControlIndustrial ControlAutomated Test EquipmentRobotics