LT8390A Series

60V 2MHz Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum

Catalog

60V 2MHz Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum

Part	Duty Cycle (Max)	Output Configuration	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Mounting Type	Number of Outputs	Supplier Device Package	Function	Operating Temperature [Min]	Operating Temperature [Max]	Output Type	Package / Case	Package / Case [custom]	Package / Case [x]	Frequency - Switching [Max]	Frequency - Switching [Min]	Topology	Output Phases	Control Features
Analog Devices LT8390EFE#PBF	95 %	Positive	60 V	4 V	Surface Mount	1	28-TSSOP-EP	Step-Up/Step-Down	-40 °C	125 ¯C	Transistor Driver	28-TSSOP Exposed Pad	4.4 mm	0.173 in	630 kHz	190 kHz	Buck-Boost	1	Current Limit Frequency Control Soft Start
Analog Devices LT8390AEFE#PBF	95 %	Positive	60 V	4 V	Surface Mount	1	28-TSSOP-EP	Step-Up/Step-Down	-40 °C	125 ¯C	Transistor Driver	28-TSSOP Exposed Pad	4.4 mm	0.173 in	2.1 MHz	645 kHz	Buck-Boost	1	Current Limit Frequency Control Soft Start
Analog Devices LT8390EFE#TRPBF	95 %	Positive	60 V	4 V	Surface Mount	1	28-TSSOP-EP	Step-Up/Step-Down	-40 °C	125 ¯C	Transistor Driver	28-TSSOP Exposed Pad	4.4 mm	0.173 in	630 kHz	190 kHz	Buck-Boost	1	Current Limit Frequency Control Soft Start
Analog Devices LT8390JFE#PBF	95 %	Positive	60 V	4 V	Surface Mount	1	28-TSSOP-EP	Step-Up/Step-Down	-40 °C	150 °C	Transistor Driver	28-TSSOP Exposed Pad	4.4 mm	0.173 in	650 kHz	150 kHz	Buck-Boost	1	Current Limit Enable Frequency Control Phase Control Power Good Soft Start
Analog Devices LT8390EUFD#PBF	95 %	Positive	60 V	4 V	Surface Mount	1	28-QFN (4x5)	Step-Up/Step-Down	-40 °C	125 ¯C	Transistor Driver	28-WFQFN Exposed Pad			630 kHz	190 kHz	Buck-Boost	1	Current Limit Frequency Control Soft Start
Analog Devices LT8390JFE#TRPBF	95 %	Positive	60 V	4 V	Surface Mount	1	28-TSSOP-EP	Step-Up/Step-Down	-40 °C	150 °C	Transistor Driver	28-TSSOP Exposed Pad	4.4 mm	0.173 in	650 kHz	150 kHz	Buck-Boost	1	Current Limit Enable Frequency Control Phase Control Power Good Soft Start
Analog Devices LT8390AHFE#TRPBF	95 %	Positive	60 V	4 V	Surface Mount	1	28-TSSOP-EP	Step-Up/Step-Down	-40 °C	150 °C	Transistor Driver	28-TSSOP Exposed Pad	4.4 mm	0.173 in	2.1 MHz	645 kHz	Buck-Boost	1	Current Limit Frequency Control Soft Start
Analog Devices LT8390JUFD#PBF	95 %	Positive	60 V	4 V	Surface Mount	1	28-QFN (4x5)	Step-Up/Step-Down	-40 °C	150 °C	Transistor Driver	28-WFQFN Exposed Pad			650 kHz	150 kHz	Buck-Boost	1	Current Limit Enable Frequency Control Phase Control Power Good Soft Start
Analog Devices LT8390HFE#PBF	95 %	Positive	60 V	4 V	Surface Mount	1	28-TSSOP-EP	Step-Up/Step-Down	-40 °C	150 °C	Transistor Driver	28-TSSOP Exposed Pad	4.4 mm	0.173 in	630 kHz	190 kHz	Buck-Boost	1	Current Limit Frequency Control Soft Start
Analog Devices LT8390EUFD#TRPBF	95 %	Positive	60 V	4 V	Surface Mount	1	28-QFN (4x5)	Step-Up/Step-Down	-40 °C	125 ¯C	Transistor Driver	28-WFQFN Exposed Pad			630 kHz	190 kHz	Buck-Boost	1	Current Limit Frequency Control Soft Start

Catalog

60V 2MHz Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum

Key Features

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

• Synchronous Switching: Up to 98% Efficiency

• Proprietary Peak-Buck Peak-Boost Current Mode

• Wide VINRange: 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

• VOUTDisconnected from VINDuring Shutdown

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

• AEC-Q100 Qualified for Automotive Applications

Description

The LT8390A 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 600kHz to 2MHz fixed frequency operation, or internal 25% 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 LT8390A is ideal for voltage regulator, battery and supercapacitor charger applications in automotive, industrial, telecom, and even battery-powered systems.The LT8390A provides input or output current monitor and power good flag. Fault protection is also provided to detect output short-circuit condition, during which the LT8390A retries, latches off, or keeps running.Max Switching FrequencyMax Output PowerLT8390650kHz450W+LT8390A2MHz50W+APPLICATIONSAutomotive, Industrial, Telecom SystemsHigh Frequency Battery-Powered System