Tag Archives: Linear

36V, 800mA Robust Linear Regulator Has Extended SOA

3089

Linear Technology Corporation announces the LT3089, a rugged 800mA wide input voltage range linear regulator with key usability, monitoring and protection features. The device has an extended safe operating area (SOA) compared to existing regulators, making it ideal for high input-to-output voltage and high output current applications where older regulators limit the output. The LT3089 uses a current source reference for single resistor output voltage settings and output adjustability down to 0V. Output current limit can be set externally with a single resistor. This regulator architecture, combined with low millivolt line and load regulation, enables multiple ICs to be paralleled easily for heat spreading and higher output current. The current from the device’s current monitor can be summed with the set current for line-drop compensation, where the output of the LT3089 increases its current to compensate for line drops.

36V, 800mA Robust Linear Regulator Has Extended SOA – [Link]

LTC3106 – 300mA Low Voltage Buck-Boost Converter with PowerPath

3106

Linear Technology announces the LTC3106, a highly integrated, 1.6µA quiescent current 300mV start-up buck-boost DC/DC converter with PowerPath™ management, optimized for multisource, low power systems. The LTC3106 is ideal for powering low power wireless sensors from rechargeable or primary batteries supplemented by energy harvesting. The LTC3106 incorporates maximum power point control (MPPC) making it compatible with common high impedance power sources, including photovoltaic cells, thermoelectric generators (TEGs) and fuel cells.

LTC3106 – 300mA Low Voltage Buck-Boost Converter with PowerPath – [Link]

LTC3643 – 2A Bidirectional Power Backup Supply

3643

Linear Technology Corporation introduces the LTC3643, a bidirectional, high voltage boost capacitor charger that automatically converts to a buck regulator for system backup. The proprietary, single-inductor topology with integrated PowerPath™ functionality does the work of two separate switching regulators, reducing size, cost and complexity. The LTC3643 operates in two modes – boost charge mode and buck backup mode. The charging mode efficiently charges an electrolytic capacitor array up to 40V with an internal switch current rating of 2A from an input supply between 3V to 17V. In backup mode, when the input supply falls below the programmable power-fail (PFI) threshold, the step-up charger operates in reverse as a synchronous step-down regulator to power and hold up the system rail from the backup capacitor. During backup, the current limit can be programmed from 2A to 4A, making this device ideal for high energy, relatively short duration backup capacitor systems, power failure backup systems, solid-state drives and battery stack charging applications.

LTC3643 – 2A Bidirectional Power Backup Supply – [Link]

LTC3815 – 6A Monolithic Synchronous DC/DC Step-Down Converter

3815

Linear Technology Corporation announces the LTC3815, a high efficiency 6A monolithic synchronous step-down DC/DC converter with an I2C-based PMBus interface for digital power system management (PSM). The LTC3815’s simplified and intuitive PMBus “Lite” command set makes it simple to use. The digital interface provides programming and read back of voltage, current, temperature and faults; all supported by LTpowerPlay™ software. This interface allows the output voltage to be margined over a ±25% range with 0.1% resolution. The default output voltage is set with a single external resistor and will power up to this voltage with or without the serial interface.

LTC3815 – 6A Monolithic Synchronous DC/DC Step-Down Converter – [Link]

LT3091 – –36V, 1.5A Negative Linear Regulator with Programmable Current Limit

3091

Linear Technology Corporation announces the LT3091, the latest addition to our LDO+ family, a 1.5 A low dropout negative linear regulator featuring low noise, rail-to-rail operation, precision programmable current limit and a bidirectional output current monitor. The device is cable-drop compensation capable, easily paralleled for higher current or circuit board heat spreading, and configurable as a 3-terminal floating regulator. The LT3091’s input voltage range is –1.5 V to –36 V. A single resistor programs the adjustable rail-to-rail output voltage from 0 V to –32 V and dropout voltage is only 300 mV (typical at full load).

LT3091 – –36V, 1.5A Negative Linear Regulator with Programmable Current Limit – [Link]

SOS webinar – Simple and efficient solution for wide voltage range applications

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LINEAR TECHNOLOGY
Term: 2015.11.25 10:00 – 11:30 CET

Learn more about available topologies for input voltage higher and lower from output level. Focus on the most efficient way to convert power in four-switch buck-boost topology.

  • available topologies of Vin min < Vout < Vin max and differences between them
  • four-switch buck-boost topology as the most efficient, flexible and the smallest solution
  • buck-boost solutions from Linear Technology, applied to real end-devices
  • Diskusia

SOS webinar – Simple and efficient solution for wide voltage range applications – [Link]

LT3091 – –36V, 1.5A Negative Linear Regulator with Programmable Current Limit

3091

The LT®3091 is a 1.5A, low dropout negative linear regulator that is easily paralleled to increase output current or spread heat on surface mounted boards. Designed with a precision current reference followed by a high performance rail-to-rail voltage buffer, this regulator finds use in applications requiring precision output, high current with no heat sink, output adjustability to zero and low dropout voltage. The device can also be configured as a 3-terminal floating regulator.

LT3091 – –36V, 1.5A Negative Linear Regulator with Programmable Current Limit – [Link]

 

Bias generators with ultralow noise and ripple for sensitive circuits

3095

The LT®3095 generates two low-noise bias supplies from a common input voltage ranging from 3V to 20V. Each channel includes a fixed frequency, peak current-mode step-up switching regulator and a low-noise, singleresistor- programmable 50mA linear regulator. The linear regulator’s high power supply ripple rejection (PSRR) combined with its low-noise performance results in less than 100μVP-P output ripple and noise.

Bias generators with ultralow noise and ripple for sensitive circuits – [Link]

35VIN & VOUT battery charge controller delivers up to 20A

4015

LTC4015 is a highly integrated, high voltage multichemistry synchronous step-down battery charger controller with onboard telemetry functions. The device efficiently transfers power from a variety of input sources, such as wall adapters and solar panels, to a Li-Ion/Polymer, LiFePO4 or lead-acid battery stack and system load up to 35V.

It provides advanced system monitoring and management functionality, including battery Coulomb counting and health monitoring. While a host microcontroller is required to access the most advanced features of the LTC4015, the use of an I²C port is optional. The main charging features of the product can be adjusted using pin-strap configurations and programming resistors.

35VIN & VOUT battery charge controller delivers up to 20A – [Link]

LTC6268-10 – 4GHz Ultra-Low Bias Current FET Input Op Amp

6268-10

The LTC6268-10 is a single 4GHz FET input op amp for high dynamic range and high speed transimpedance amplifier (TIA) applications. This new decompensated amplifiers extend the speed and dynamic range capabilities of this ultralow bias current op amp family for applications with a gain of 10 or higher. Input bias current is 0.9pA max over the 40°C to 85°C temperature range and just 4pA max over the entire 40°C to 125°C temperature range. Wideband voltage and current noise are 4nV/√Hz and 7fA/√Hz, respectively. With 0.45pF input capacitance and 1000V/μs slew rate, the LTC6268-10 is well suited for photodiode and photomultiplier (PMT) circuits, high impedance sensor applications and for driving analog to digital converters (ADCs). The part is also available as a dual op amp (LTC6269-10) and in unity gain stable options (single LTC6268 and dual LTC6269).

LTC6268-10 – 4GHz Ultra-Low Bias Current FET Input Op Amp – [Link]