Click to expand full text
www.DataSheet4U.com
Freescale Semiconductor,Order Inc. this document from Analog Marketing
Rev. 2.5, 11/2002
Switch Mode Power Supply with Multiple Linear Regulators and High Speed CAN Transceiver
The 33394 is a multi–output power supply integrated circuit with high speed CAN transceiver. The IC incorporates a switching pre–regulator operating over a wide input voltage range from +4.0V to +26.5V (with transients up to 45V). The switching regulator has an internal 3.0A current limit and runs in both buck mode or boost mode to always supply a pre–regulated output followed by Low Drop Out (LDO) regulators: VDDH / 5.0V @ 400mA; VDD3_3 / 3.3V @ 120mA; VDDL / 2.6V (User scalable between 3.3V – 1.25V) @ 400mA typically, using an external NPN pass transistor.