MC33998 Description
Freescale Semiconductor Technical Data Document Number: 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.
MC33998 Key Features
- Operating Voltage Range 6.0 V up to 26.5 V (40 V transient) Temperature Device Package Range (TA)
- Step-Down Switching Regulator Output VDDH = 5.0 V @ 1400 mA (total) MC33998DW/R2
- Linear Regulator with External Pass Transistor VDDL = 2.6 V @ -40°C to 125°C 24 SOICW MCZ33998EG/R2 400 mA
- Low-Power Standby Linear Regulator VKAM = 2.6 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