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Wide Input Range, No RSENSE Current Mode Boost, Flyback & SEPIC Controller Operates up to 175°C

2017-04-20 | Return

MILPITAS, CA & NORWOOD, MA – April 20, 2017 – Analog Devices, Inc., which recently acquired Linear Technology Corporation, announces the LTC1871X, a wide input range, current mode, boost, flyback or SEPIC controller that drives an N-channel power MOSFET and requires few external components. Intended for low to medium power applications, it eliminates the need for a current sense resistor by utilizing the power MOSFET’s on-resistance, thereby maximizing efficiency. The LTC1871X’s design is optimized for high temperature environments up to 175°C.

It’s 2.5V to 36V input voltage range is ideal for high temperature applications such as oil exploration drilling equipment with power sources ranging from 3V to 36V. The LTC1871X’s electrical parameters are 100% tested at 175°C, offering a VREF accuracy of ±2% over the entire –40°C to 175°C temperature range. The LTC1871X’s flexibility for use in boost, SEPIC or flyback topologies is ideal for a wide range of battery-powered applications commonly found in downhole drilling applications. The LTC1871X’s Burst Mode® operation offers low quiescent current, well suited for applications that require extended operating battery life. Specialized Cu/Ni/Au bond pad plating ensures long life in high temperature environments while a tiny MSOP-10 package offers a highly compact solution footprint.

The LTC1871XMS, offered in an MSOP-10 package, is priced at $125.00 each in 1,000-piece quantities and is available from stock. For more information, visit www.linear.com/product/LTC1871X.

Summary of Features: LTC1871X

• 100% Tested at 175°C

• ±2% Reference Accuracy Over –40°C to 175°C Range

• High Efficiency (No Sense Resistor Required)

• Wide Input Voltage Range: 2.5V to 36V

• Current Mode Control Provides Excellent Transient Response

• High Maximum Duty Cycle (92% Typ)

• ±2% RUN Pin Threshold with 100mV Hysteresis

• Micropower Shutdown: IQ = 10μA

• Programmable Operating Frequency (65kHz to 900kHz) with One External Resistor

• Synchronizable to an External Clock up to 1.3 × fOSC

• User-Controlled Pulse-Skipping or Burst Mode® Operation

• Internal 5.2V Low Dropout Voltage Regulator

• Output Overvoltage Protection

• Capable of Operating with a Sense Resistor for High Output Voltage Applications

• Small 10-Lead MSOP Package

Pricing shown is for budgetary use only and may differ due to local duties, taxes, fees and exchange rates.

Source:http://www.linear.com/