MC33997 - Switching Power Supply

Product Overview

Motorola

Part number	MC33997
Manufacturer	Motorola
File Size	454.88 KB
Description	Switching Power Supply
Datasheet	MC33997 Datasheet
Additional preview pages of the MC33997 datasheet.

Pin 1 2 3 4 Pin Name VKAMOK KA_VPWR CRES VPWR Description Keep-Alive Output Monitoring.

This pin is an "open-drain" output that will be used with a discrete pull-up resistor to VKAM.

When the supply voltage to the 33997 is disconnected or lost, the VKAMOK signal goes low.

Operating Voltage Range 6.0 V up to 26.5 V (40 V transient).
Step-Down Switching Regulator Output VDDH = 5.0 V @ 1400 mA (total).
Linear Regulator with External Pass Transistor VDDL = 3.3 V @ 400 mA.
Low-Power Standby Linear Regulator VKAM = 3.3 V @ 10 mA.
Two 5.0 V @ 200 mA (typical) Sensor Supplies VREF Protected Against Short-to-Battery and Short-to-Ground with Retry Capability.
Undervoltage Shutdown on the VDDL, VDDH Outputs with Retry C.

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Published: Sep 21, 2005 |