33997 Description
Freescale Semiconductor, Inc. MC33997/D Rev 3.0, 03/2003 MOTOROLA SEMICONDUCTOR TECHNICAL DATA Advance Information Switching Power Supply with Linear Regulators The 33997 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...
33997 Key Features
- 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 Capa
- Undervoltage Shutdown on the VDDL, VDDH Outputs with Retry Capability
- Reset Signals
- Power-Up Delay
- Enable Pins for Main Supplies (EN) and Sensor Supplies (SNSEN)
- Power Sequencing for Advanced Microprocessor Architectures