Renesas ISL78083 automotive camera PMIC

Renesas Electronics announces the ISL78083 — an integrated power management IC (PMIC) that is intended to simplify power supply design for use in multiple HD camera modules, reducing development cycles, bill of materials (BOM) cost and supply chain risks.

The automotive camera PMIC accepts direct-from-battery (36–42 V) or power-over-coax (15–18 V) supply sources and supports output currents up to 750 mA per output. This power level offers ample headroom for existing image sensors up to 7 MP and future sensors with even higher resolution. Cameras designed with the device are small and can be conveniently mounted in vehicle locations that provide the desired surround view camera angles without negatively impacting style or aerodynamics.

The feature-rich, 4-channel unit includes a primary high-voltage synchronous buck regulator, two secondary low-voltage synchronous buck regulators and a low-dropout (LDO) voltage regulator. With integrated feedback and integrated compensation, all that is left to complete the high-efficiency power supply is the output inductor and capacitors. The product is said to require 7–10 fewer external components compared to competing solutions. It also features four overvoltage (OV) and four undervoltage (UV) monitors, three power-good indicators and a reset output/fault indicator. A second reference is supplied for the OV/UV monitors.

Voltage of 4 to 42 V supports power-over-coax or direct from a 12 V battery power source. Three buck regulators provide programmable output ranges from 1 to 5.05 V, and the LDO supports 2.8 to 3.4 V.

2.2 MHz switching frequency avoids AM band interference and shrinks the required output capacitance and inductance.

The product is AEC-Q100 Grade-1 qualified for ambient operation from -40 to +125°C and junction temperature from -40 to +150°C. A wettable flank package is said to improve the reliability of solder connections and enables optical inspection of solder joints.