LTC3240EDC-2.5#TRMPBF

LINEAR TECHNOLOGY  LTC3240EDC-2.5#TRMPBF  芯片, 直流/直流升降转换器, 2.5V, 6DFN

The is a step-up/down DC/DC charge-pump Converter that produces a fixed regulated output voltage of 3.3/2.5V over a wide input voltage range 1.8 to 5.5V. With input voltages greater than the regulated output voltage the LTC3240 operates as a low dropout regulator. Once the input voltage drops within 100mV of the regulated output voltage the part automatically switches to step-up mode. In step-up mode the LTC3240 operates as a constant frequency 1.2MHz doubling charge-pump. It features low no load operating current 65µA typical and ultralow operating current in shutdown <1µA. Built-in soft-start circuitry prevents excessive inrush current during start-up. Thermal shutdown and current-limit circuitry allow the parts to survive a continuous short-circuit from VOUT to GND. It requires only three tiny external ceramic capacitors for an ultra-small application footprint.

.

Automatic mode switching

.

Low dropout regulator operation in step-down mode

.

Built-in soft-start reduces inrush current

.

Shutdown disconnects load from input

.

Short-circuit/thermal protection

.

65µA Low no-load quiescent current

.

Output current up to 150mA