| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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655 pcs
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655 pcs | On Request | 1 | On Request | On Request | 1629+ | On Request | On Request |
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The LTC3868-1 from LT is a high-performance dual, 2-phase synchronous step-down switching regulator controller. It is designed to drive all N-channel synchronous power MOSFET stages and operates with a wide input voltage range from 4V to 24V. The controller supports a wide output voltage range of 0.8V to 14V, making it suitable for various power management applications.
Key features include a low operating quiescent current of 170μA (one channel on) and a low shutdown quiescent current of 8μA, extending battery life in portable devices. It offers a phase-lockable frequency up to 850kHz and a programmable fixed frequency from 50kHz to 900kHz. The architecture minimizes input capacitance and power supply noise by operating the two controller outputs out of phase. The device also includes OPTI-LOOP compensation for optimizing transient response, a precision 0.8V reference, and a power good output indicator.
Available in compact 4mm x 5mm QFN and narrow SSOP packages, the LTC3868-1 is well-suited for applications such as notebook computers, portable instruments, battery-operated digital devices, and distributed DC power systems. It provides features like adjustable output voltage soft-start, output overvoltage protection, and output latchoff protection during short-circuit conditions.
The input voltage range is 4V to 24V.
The output voltage range is 0.8V to 14V.
The operating quiescent current is 170μA when one channel is on.
The shutdown quiescent current is 8μA.
The phase-lockable frequency range is 75kHz to 850kHz.
The programmable fixed frequency range is 50kHz to 900kHz.
The duty cycle during very low dropout operation is 99%.