The LTC3866IUF#PBF is a single phase current mode synchronous step-down switching regulator controller that drives all N-channel power MOSFET switches. It employs a unique architecture which enhances the signal-to-noise ratio of the current sense signal, allowing the use of a very low DC resistance power inductor to maximize the efficiency in high current applications. This feature also reduces the switching jitter commonly found in low DCR applications. The LTC3866IUF#PBF also includes a high speed remote sense differential amplifier, a programmable current sense limit that can be selected to 10mV, 15mV, 20mV, 25mV or 30mV, and DCR temperature compensation to limit the maximum output current precisely over temperature.
The LTC3866IUF#PBF also features a precise 0.6V reference with a guaranteed limit of ±0.5% that provides an accurate output voltage from 0.6V to 3.5V. A 4.5V to 38V input voltage range allows it to support a wide variety of bus voltages and various types of batteries.
The LTC3866IUF#PBF is offered in a low profile 24-lead 4mm × 4mm QFN and 24-lead exposed pad FE packages.
Feature
- Sub Milliohm DCR Current Sensing
- High Efficiency: Up to 95%
- Selectable Current Sensing Limit
- Programmable DCR Temperature Compensation
- Die Overtemperature Thermal Shutdown
- ± 0.5% 0.6V Output Voltage Accuracy
- Programmable Fixed Frequency 250kHz to 770kHz
- High Speed Differential Remote Sense Amplifier
- Wide Input Voltage Range: 4.5V to 38V
- Output Voltage Range: 0.6V to 3.5V with Diffamp
- Adjustable Soft-Start or Output Voltage Tracking
- Foldback Output Current Limit
- Short-Circuit Soft Recovery
- Output Overvoltage Protection
- 24-Lead (4mm × 4mm) QFN and 24-Lead FE Packages
Applications
- Computer Systems
- Telecom Systems
- Industrial and Medical Instruments
- DC Power Distribution Systems
(Picture: Pinout)
