PC33999

Freescale Semiconductor, Inc. MOTOROLA SEMICONDUCTOR TECHNICAL DATA Document order number: MC33999 Rev 1.0, 01/2004 Preliminary Information 16-Output Switch with SPI and PWM Control The 33999 is a 16-output low-side switch with a 24-bit serial input control. It is designed for a variety of applications including inductive, incandescent, and LED loads. The Serial Peripheral Interface (SPI) provides both input control and diagnostic readout. Eight parallel inputs are also provided for direct Pulse Width Modulation (PWM) control of eight dedicated outputs. Additionally, an output-programmable PWM input provides PWM of any combination of outputs. A dedicated reset input provides the ability to clear all internal registers and turn all outputs off. The 33999 directly interfaces with microcontrollers and is compatible with both 3.3 V and 5.0 V CMOS logic levels. The 33999, in effect, serves as a bus expander and buffer with fault management features that reduces the MCU’s fault management burden. Features Designed to Operate 5.0 V < VPWR < 27 V 24-Bit SPI for Control and Fault reporting, 3.3 V/5.0 V Compatible Outputs Are Current Limited (0.9 A to 2.5 A) to Drive Incandescent Lamps Output Voltage Clamp of +50 V During Inductive Switching On/Off Control of Open Load Detect Current (LED Application) VPWR Standby Current < 10 µA RDS(ON) of 0.55 Ω at 25°C Typical Independent Overtemperature Protection Output Selectable for PWM Control Output ON Short-to-VBAT an...