LTC3250ES6-1.2#TRMPBF

LTC3250-1.2 is a charge pump stepdown DC/DC converter that produce a 1.2V regulated output from a 2.7V to 5.5V input. The part uses switched capacitor fractional conversion to achieve typical efficiency two times higher than that of a linear regulator. No inductors are required. A unique constant frequency architecture provides a low noise regulated output as well as lower input noise than conventional charge pump regulators. High frequency operation (fOSC = 1.5MHz) simplifies filtering to further reduce conducted noise. The part also uses Burst Mode® operation to improve efficiency at light loads. It is widely used in application such as handheld computers, cellular phones, digital cameras, handheld medical instruments, low power DSP supplies etc.

• Low noise constant frequency operation
• Output current is 250mA
• Shutdown disconnects load from VIN
• Soft-start limits inrush current at turn-on
• Short-circuit and overtemperature protected
• Operating current is 35µA typical at (IOUT = 0mA, TA = 25°C)
• Shutdown current is 1µA maximum at (SHDN = 0V, TA = 25°C)
• Line regulation is 0.2%/V typical at (IOUT = 250mA, TA = 25°C)
• Operating ambient temperature is -40°C to 85°C
• Package style is 6-lead plastic SOT-23

附註

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