LT8392 Series

60V Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum

Catalog

60V Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum

Part	Package / Case	Number of Outputs	Topology	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Output Phases	Function	Frequency - Switching	Supplier Device Package	Mounting Type	Output Type	Operating Temperature [Max]	Operating Temperature [Min]	Control Features	Synchronous Rectifier	Clock Sync	Output Configuration
Analog Devices LT8392JUFD#PBF	28-WFQFN Exposed Pad	1	Buck-Boost	60 V	3 V	2	Step-Up/Step-Down	400 kHz	28-QFN (4x5)	Surface Mount	Transistor Driver	150 °C	-40 °C	Enable Frequency Control Power Good Soft Start			Positive
Analog Devices LT8392JUFD#TRPBF	28-WFQFN Exposed Pad	1	Buck-Boost	60 V	3 V	2	Step-Up/Step-Down	400 kHz	28-QFN (4x5)	Surface Mount	Transistor Driver	150 °C	-40 °C	Enable Frequency Control Power Good Soft Start			Positive

Catalog

60V Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum

Key Features

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

• Up to 98% Efficiency

• Proprietary Peak-Buck Peak-Boost Current Mode

• Wide VIN Range: 3V (Need EXTVCC≥ 4.5V) to 60V

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

• ±4% Input or Output Current Accuracy with Monitor

• Spread Spectrum Frequency Modulation for Low EMI

• Integrated Bootstrap Diodes

• Adjustable and Synchronizable: 150kHz to 650kHz

• VOUTDisconnected from VINDuring Shutdown

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

Description

The LT8392 is a synchronous 4-switch buck-boost DC/ DC controller that regulates output voltage, input or output current from 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 operation for low EMI. With 3V to 60V input voltage range, 1V to 60V output voltage capability, and seamless low noise transitions between operation regions, the LT8392 is ideal for voltage regulator, battery and super-capacitor charger applications in automotive, industrial, telecom, and even battery-powered systems.The LT8392 provides input or output current monitor and power good flag. Fault protection function detects output short-circuit condition, during which the LT8392 retries, latches off, or keeps running.