LT1175CQ#PBF

LT®1175 is a negative micropower low dropout micropower regulator. A new reference amplifier topology gives precision DC characteristics along with the ability to maintain good loop stability with an extremely wide range of output capacitors. Very low dropout voltage and high efficiency are obtained with a unique power transistor anti-saturation design. Several new features make the LT1175 very user-friendly. The output can be forced to reverse voltage without damage or latchup. Unlike some earlier designs, the increase in quiescent current during a dropout condition is actively limited. It has complete blowout protection with current limiting, power limiting and thermal shutdown. Special attention was given to the problem of high temperature operation with micropower operating currents, preventing output voltage rise under no-load conditions. Typical applications are analog systems, modems, instrumentation, A/D and D/A converters, interface drivers, battery-powered systems.

• Active-low SHDN pin can interface directly to either positive or negative logic levels
• Quiescent input supply current is 45μA typical at VIN – VOUT ≤ 12V
• Adjustable feedback sense voltage is 3.743 to 3.857V
• Low voltage linear dropout characteristics
• Stable with wide range of output capacitors
• Input supply current in shutdown is 10μA typical at V active-low SHDN=0V
• Tolerates reverse output voltage
• 5-lead plastic DD-Pak package
• 0°C to 125°C temperature rating

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party