LT8390 Controller: LT8390, DC/DC Controller, Datasheet

The pinout of LT8390 is given below:

LT8390 Pinout

LT8390 Symbol

LT8390 Footprint

LT8390 3D Model

The LT8390 is a synchronous 4-switch buck-boost DC/DC controller that regulates output voltage, input or output current from an input voltage above, below, or equal to the output voltage. The proprietary peak-buck/peak-boost current mode control scheme allows adjustable and synchronizable 150kHz to 650kHz fixed-frequency operation, or internal ±15% triangle spread spectrum frequency modulation for low EMI. With a 4V to 60V input voltage range, 0V to 60V output voltage capability, and seamless low noise transitions between operation regions, the LT8390 is ideal for voltage regulator, battery and supercapacitor charger applications in automotive, industrial, telecom, and even battery-powered systems. The LT8390 provides input or output current monitor and power good flag. Fault protection is also provided to detect output short-circuit conditions, during which the LT8390 retries, latches off, or keeps running.

• 4-Switch Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT 

• Synchronous Switching: Up to 98% Efficiency 

• Proprietary Peak-Buck Peak-Boost Current Mode 

• Wide VIN Range: 4V to 60V

• ±1.5% Output Voltage Accuracy: 1V ≤ VOUT ≤ 60V

• ±3% Input or Output Current Accuracy with Monitor 

• Spread Spectrum Frequency Modulation for Low EMI 

• High Side PMOS Load Switch Driver 

• Integrated Bootstrap Diodes 

• No Top MOSFET Refresh Noise in Buck or Boost 

• Adjustable and Synchronizable: 150kHz to 650kHz 

• VOUT Disconnected from VIN During Shutdown 

• Available in 28-Lead TSSOP with Exposed Pad and 28-Lead QFN (4mm × 5mm)

• Automotive, Industrial, Telecom Systems 

• High Power Battery-Powered System

The following circuits are the LT8390 typical application circuit:

LT8390 Typical Application-98% Efficient 300W (12V 25A) Buck-Boost Voltage Regulator

LT8390 Typical Application-98% Efficient 48W (12V 4A) Miniature Buck-Boost Voltage Regulator

LT8390 Typical Application-98% Efficient 300W (12V 25A) Buck-Boost Voltage Regulator

The LT8390 is a current mode DC/DC controller that can regulate the output voltage, input or output current from input voltage above, below, or equal to the output voltage. The LTC proprietary peak-buck peak-boost current mode control scheme uses a single inductor current sense resistor and provides a smooth transition between buck region, buck-boost region, and boost the region. Its operation is best understood by referring to the Block Diagram below.

LT8390 Block Diagram

Linear Technology/Analog Devices LT8390EFE#PBF technical specifications, attributes, parameters and parts with similar specifications to Linear Technology/Analog Devices LT8390EFE#PBF.

Linear Technology Corporation, a member of the S&P 500, has been designing, manufacturing and marketing a broad line of high-performance analogue integrated circuits for major companies worldwide for three decades. The Company's products provide an essential bridge between our analogue world and the digital electronics in communications, networking, industrial, automotive, computer, medical, instrumentation, consumer, and military and aerospace systems. Linear Technology produces power management, data conversion, signal conditioning, RF and interface ICs, µModule subsystems, and wireless sensor network products.