Order 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 pas...