LT1129CS8-3.3#PBF

LT1129-3.3 is a micropower low dropout regulator with shutdown. This device is capable of supplying 700mA of output current with a dropout voltage of 400mV at maximum output. Designed for use in battery-powered systems, the low quiescent current, 50μA operating and 16μA in shutdown, make them an ideal choice. The quiescent current does not rise in dropout as it does with many other low dropout PNP regulators. Other features of the device include the ability to operate with small output capacitors. They are stable with only 3.3μF on the output while most older devices require between 10μF and 100μF for stability. This makes the device ideal for backup power situations where the output is held high and the input is at ground or reversed. It is used in application such as low current regulator, regulator for battery-powered systems, post regulator for switching supplies, 5V to 3.3V logic regulator etc.

• No protection diodes needed
• Controlled quiescent current in dropout
• Reverse battery protection
• No reverse output current, thermal limiting
• Regulated output voltage is 3.3V typical
• Line regulation is 1.5mV typical at (ΔVIN = 4.8V to 20V, IOUT = 1mA)
• Load regulation is 6mV typical at (ΔILOAD = 1mA to 700mA, TJ = 25°C)
• Ripple rejection is 64dB typical at (VIN – VOUT = 1V (Avg), VRIPPLE = 0.5VP-P)
• Operating junction temperature is 0°C to 125°C
• Package style is 8-lead NSOIC

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