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MC33879EK Datasheet(PDF) 1 Page - Freescale Semiconductor, Inc |
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MC33879EK Datasheet(HTML) 1 Page - Freescale Semiconductor, Inc |
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1 / 24 page  Document Number: MC33879 Rev 6.0, 6/2007 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., 2007. All rights reserved. Configurable Octal Serial Switch with Open Load Detect Current Disable The 33879 device is an 8-output hardware-configurable, high-side / low-side switch with 16-bit serial input control. Two of the outputs may be controlled directly via microprocessor for PWM applications. The 33879 incorporates SMARTMOS technology, with CMOS logic, bipolar/MOS analog circuitry, and DMOS power MOSFETs. The 33879 controls various inductive, incandescent, or LED loads by directly interfacing with a microcontroller. The circuit’s innovative monitoring and protection features include very low standby currents, cascade fault reporting, internal +45 V clamp voltage for low-side configuration, -20 V high-side configuration, output-specific diagnostics, and independent overtemperature protection. Features • Designed to Operate 5.5 V < VPWR < 26.5 V • 16-Bit SPI for Control and Fault Reporting, 3.3 V/5.0 V Compatible • Outputs Are Current Limited (0.6 A to 1.2 A) to Drive Incandescent Lamps • Output Voltage Clamp, +45 V (Low Side) and -20 V (High Side) During Inductive Switching • On/Off Control of Open Load Detect Current (LED Application) • Internal Reverse Battery Protection on VPWR • Loss of Ground or Supply Will Not Energize Loads or Damage IC • Maximum 5.0 µA I PWR Standby Current at 13 V VPWR •RDS(ON) of 0.75 Ω at 25°C Typical • Short Circuit Detect and Current Limit with Automatic Retry • Independent Overtemperature Protection • Pb-Free Packaging Designated by Suffix Code EK Figure 1. 33879 Simplified Application Diagram HIGH SIDE/ LOW SIDE SWITCH DWB SUFFIX EXPOSED PAD EK SUFFIX (PB-FREE) 98ARL10543D 32-PIN SOICW 33879 33879A ORDERING INFORMATION Device Temperature Range (TA) Package MC33879EK/R2 -40 °C to 125°C 32 SOICW-EP MCZ33879EK/R2 MCZ33879AEK/R2 VBAT M VBAT VPWR 33879 Low-Side Drive GND S3 S4 D1 D2 D3 D4 S1 S2 D5 D6 D7 D8 S7 S8 S5 S6 EN DI SCLK CS DO IN5 IN6 MCU A0 MOSI SCLK CS MISO PWM1 PWM2 VDD VPWR +5.0 V H-Bridge Configuration VBAT High-Side Drive |
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