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Freescale Semiconductor Technical Data
Document Number: MC33998 Rev. 2.0, 8/2006
Switching Power Supply with Linear Regulators
The 33998 is a medium-power, multi-output power supply integrated circuit that is capable of operating over a wide input voltage range, from 6.0 V up to 26.5 V with 40 V transient capability. It incorporates a sensorless current mode control step-down switching controller regulating directly to 5.0 V. The 2.6 V linear regulator uses an external pass transistor to reduce the 33998 power dissipation. The 33998 also provides a 2.6 V linear standby regulator and two 5.0 V sensor supply outputs protected by internal lowresistance LDMOS transistors.
MC33998 Datasheet
