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33894 Datasheet(PDF) 1 Page - Freescale Semiconductor, Inc |
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33894 Datasheet(HTML) 1 Page - Freescale Semiconductor, Inc |
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1 / 28 page  Document Number: MC33894 Rev 3.0, 10/2006 Freescale Semiconductor Advance Information * This document contains certain information on a new product. Specifications and information herein are subject to change without notice. © Freescale Semiconductor, Inc., 2006. All rights reserved. Quad High-Side Switch (Quad 35 m Ω) The 33894 is one in a family of devices designed for low-voltage automotive and industrial lighting and motor control applications. Its four low RDS(ON) MOSFETs (four 35 mΩ) can control the high sides of four separate resistive or inductive loads. Programming, control, and diagnostics are accomplished using a 16-bit SPI interface. Additionally, each output has its own parallel input for pulse-width modulation (PWM) control if desired. The 33894 allows the user to program the fault current trip levels and duration of acceptable lamp inrush or motor stall intervals via the SPI. Such programmability allows tight control of fault currents and can protect wiring harnesses and circuit boards as well as loads. The 33894 is packaged in a power-enhanced 12 x 12 nonleaded Power QFN package with exposed tabs. Features •Quad 35 m Ω High-Side Switches (at 25°C) • Operating Voltage Range of 6.0 V to 27 V with Standby Current < 5.0 µA • SPI Control of Overcurrent Limit, Overcurrent Fault Blanking Time, Output OFF Open Load Detection, Output ON /OFF Control, Watchdog Timeout, Slew Rates, and Fault Status Reporting • SPI Status Reporting of Overcurrent, Open and Shorted Loads, Overtemperature, Undervoltage and Overvoltage Shutdown, Fail-Safe Pin Status, and Program Status • Analog Current Feedback with Selectable Ratio • Enhanced -16 V Reverse Polarity VPWR Protection • Figure 1. 33894 Simplified Application Diagram QUAD HIGH-SIDE SWITCH 35 m Ω PNA SUFFIX 98ARL10596D 24-PIN PQFN 33894 ORDERING INFORMATION Device Temperature Range (TA) Package MC33894PNA/R2 -40 °C to 125°C 24 PQFN Bottom View 33894 HS0 HS1 GND GND FSI CSNS HS2 HS3 MCU SCLK LOAD 0 LOAD 1 LOAD 2 LOAD 3 SCLK IN0 I/O IN1 IN2 IN3 I/O SI SI SO SO I/O A/D VPWR VDD VDD VPWR WAKE I/O I/O VDD VDD CS CS RST I/O FS I/O VPWR |
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