ANALOG DEVICES LT1614IS8#PBF DC-DC Switching Inverting Regulator, Adjustable, 0.92 to 6 V in, 30V/1.2A out, NSOIC-8

LT®1614 is a fixed frequency, inverting mode switching regulator that operates from an input voltage as low as 1V. Utilizing a low noise topology, this can generate a negative output down to �24V from a 1V to 5V input. Fixed frequency switching ensures a clean output free from low frequency noise. The device contains a low battery detector with a 200mV reference and shuts down to less than 10µA. No load quiescent current of this is 1mA and the internal NPN power switch handles a 500mA current with a voltage drop of just 295mV. High frequency switching enables the use of small inductors and capacitors. Ceramic capacitors can be used in many applications, eliminating the need for bulky tantalum types. Typical applications are MR head bias, LCD bias, GaAs FET bias, positive-to-negative conversion.

• Better regulation than a charge pump
• 0.1ohm effective output impedance
• 600KHz fixed frequency operation, operates with VIN as low as 1V
• 1mA quiescent current, low shutdown current is 10µA
• Low-battery detector, low VCESAT switch is 295mV at 500mA
• Feedback voltage range from �1.21 to �1.27V, TA=25°C commercial grade 0 to 70°C. VIN=1.5V, VSHDN=VIN
• Minimum input voltage 0.92V typ (TA=25°C. commercial grade 0°C to 70°C. VIN=1.5V, VSHDN=VIN)
• 8-lead plastic SO package
• Operating temperature range from �40°C to 85°C

Notes

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