MC33730EK Switch-mode power supply for multi-linear regulators
The 33730 is a multi-output power supply for automotive applications. The integrated circuit (IC) integrates a switching regulator that operates over a wide input voltage range of +4.5 V to +26.5 V. The buck switching regulator is controlled by a fixed frequency PWM voltage mode. It has a 3.5A current limit and adjustable slew rate (typical) via control pins to reduce switching noise. There is an adjustable frequency oscillator switching regulator that allows the user to optimize the operation of its input voltage and component values over a wide range. The linear regulator can be configured as two normal mode regulators (VDD3, VDDL) and one standby regulator (VKAM) or as a normal mode linear regulator (VDDL) and two standby regulators (VKAM and VDD3 standby). Two protected output VREFs (1,2) are used to provide power from external sensors.
Features-------------------------------------------------- ------------------------------ All regulated voltages are available for Freescale's 32-bit and other microcontroller series and their logic and analog functions, frequency-adjustable, slew rate control, switching buck regulators, power sequences, programmable voltages, VDDL, VDD3 - 3% accuracy programmable standby adjustment VKAM – 15% accuracy down to 4.5V, 15% accuracy at KA_VBAT pin, VDD3 can be programmed as an optional second standby regulator provides two 5.0V sensor protection supplies to provide battery reverse protection FET gate driver provides necessary MCU monitoring and fail-safe support
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