Datasheet > 33879_12

33879_12

更新时间： 2022-04-01 08:24:04

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		开关
页数	文件大小	规格书
23页	645K
描述
Configurable Octal Serial Switch with Open Load Detect Current Disable

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33879_12 数据手册

Document Number: MC33879

Rev. 9.0, 5/2012

Freescale Semiconductor

Technical Data

Configurable Octal Serial Switch

with Open Load Detect Current

Disable

33879

33879A

The 33879 device is an 8-output hardware configurable, high side/

low side switch with 16-bit serial input control using the serial peripheral

interface (SPI). Two of the outputs may be controlled directly via a

microcontroller for pulse-width modulation (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 over-temperature protection.

HIGH SIDE/ LOW SIDE SWITCH

EK SUFFIX (PB-FREE)

98ARL10543D

Features

32-PIN SOICW

• Designed to operate 5.5 V < V_PWR< 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 V_PWR

• Loss of ground or supply will not energize loads or damage IC

• Maximum 5.0 μA I_PWRstandby current at 13 V V_PWR

• R_DS(ON)of 0.75 Ω at 25 °C typical

ORDERING INFORMATION

Temperature

Device

(For Tape and Reel,

add an R2 Suffix)

Package

Range (T )

MC33879APEK

MC33879TEK

-40°C to 125°C

32 SOICW-EP

• Short-circuit detect and current limit with automatic retry

• Independent over-temperature protection

PWR

BAT

5.0 V

33879

VPWR

VDD

High Side Drive

MCU

MOSI

SCLK

H-Bridge Configuration

SCLK

BAT

MISO

PWM1

PWM2

IN5

Low Side Drive

IN6

GND

Figure 1. 33879 Simplified Application Diagram

Freescale Semiconductor, Inc. reserves the right to change the detail specifications,

as may be required, to permit improvements in the design of its products.

12 3 4 5 6 7...23

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33879A	FREESCALE	Configurable Octal Serial Switch with Open Load Detect Current Disable	获取价格
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