MC33997数据手册恩XP中文资料规格书

描述 Description

Overview ARCHIVED 4/08 - The 33997 is a multiple output, medium power integrated supply operating from a 6.0 to 26.5V (with 40V transient) input source. A 5.0 V output is provided by a sensorless current mode step-down switching supply. A 3.3V output is provided by a linear regulator using an external pass transistor. An additional 3.3 V output is provided for standby use along with two internally protected low RDS(on)LDMOS 5.0 V outputs for sensor use. Separate Enable inputs provide main and sensor supply output control with reset and power-on reset delay. The 33997 provides power supply sequencing for advanced microprocessor architectures such as the NXP® Semiconductors MPC5xx and 683xx microprocessor families.
 
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Archived content is no longer updated and is made available for historical reference only.

特性 Features

•Step-down switching regulator output V DDH =5.0 V @1400 mA utilizing sensorless current mode control with soft start


•Linear regulator with external pass transistor V DDL =3.3 V


•Low power standby linear regulator V KAM =3.3 V @10 mA


•Two sensor supplies protected against short-to-battery and short-to-ground


•Reset signals, Power-On Reset Delay


•Enable pin for main supplies,EN pin


•Enable pin for sensor supplies,SNSEN pin


•Power sequencing for advanced microprocessor architectures