LT8603 Quad Output Triple Buck Converters and Boost Controllers

Product Highlights > LT8603 Quad Output Triple Buck Converters and Boost Controllers

            LT8603 Quad Output Triple Buck Converters and Boost Controllers
                    Analog Devices' LT8603 PMICs are for automotive stop-start/cold crank ride through, industrial controls, and power supply applications
    

Image of Analog Devices' LT8603 Quad Output Triple Buck Converters and Boost Controllers Analog Devices' LT8603 is a quad (4) output that combines two (2) high input, step-down switching regulators, one (1) low input step-down regulator, and a boost controller. With the boost controller configured to supply the chip V_IN supply, the LT8603 produces three precisely regulated outputs even when the boost input voltage falls significantly below the regulated output voltages, such as during an automotive cold crank scenario. Alternatively, with the boost controller driven from one of the step-down regulator outputs or configured as a SEPIC, the LT8603 provides four precisely regulated outputs over a wide input voltage range. The LT8603 provides robust regulation by including a cycle-by-cycle current limit for all step-down regulators, thermal shutdown, and a boost controller that can tolerate reverse battery connections and negative transient input voltages down to -42 V. The LT8603 is ideal for automotive stop-start/cold crank ride through, industrial controls, and power supply applications.

Image of Analog Devices' LT8603 Quad Output Triple Buck Converters and Boost Controllers Schematic

Image of Analog Devices' LT8603 Quad Output Triple Buck Converters and Boost Controllers Graph

Features

Flexible power supply system capable of four regulated outputs with V_BATT << V_OUT
One boost controller allows buck converters to regulate with V_BATT << V_OUT
Selectable Burst Mode^® operation allows low 28 μA I_Q with high voltage channels active
Temperature operating range: -40°C to +125°C (T_J)
Package/case: 40-QFN (6x6)

Applications

Automotive stop-start and cold crank ride through
Industrial controls
Power supplies

Two high voltage synchronous buck regulators
- 3 V to 42 V input voltage range
- Output currents up to 2.5 A and 1.5 A
One low voltage synchronous buck regulator
- 2.6 V to 5.5 V input voltage range
- Output currents up to 1.8 A