MAX4896ATP+ Maxim Integrated Products, MAX4896ATP+ Datasheet

MAX4896ATP+

Manufacturer Part Number

MAX4896ATP+

Description

IC RELAY/LOAD DRVR 8CHAN 20-TQFN

Manufacturer

Maxim Integrated Products

Type

Relay/Load Driverr

Datasheet

1.MAX4896ETPT.pdf (15 pages)

Specifications of MAX4896ATP+

Input Type

SPI

Number Of Outputs

On-state Resistance

3 Ohm

Current - Output / Channel

410mA

Current - Peak Output

960mA

Voltage - Supply

2.7 V ~ 5.5 V

Operating Temperature

-40°C ~ 125°C

Mounting Type

Surface Mount

Package / Case

20-TQFN Exposed Pad

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current page: 1 of 15
Download datasheet (269Kb)

The MAX4896 8-channel relay and load driver is

designed for medium voltage applications up to 50V.

This device is offered in a 20-pin, 5mm x 5mm TQFN

package, resulting in substantial board space savings.

The MAX4896 8-channel relay driver offers built-in

inductive kickback protection, drive for latching/

nonlatching or dual-coil relays, and open-load and

short-circuit fault detection.The MAX4896 also protects

against overcurrent conditions. Each independent

open-drain output features a 3Ω (typ) on-resistance,

and is guaranteed to sink 200mA of load current

A built-in overvoltage protection clamp handles kick-

back-voltage transients, which are common when dri-

ving inductive loads. Thermal-shutdown circuitry shuts

off all outputs (OUT_) when the junction temperature

exceeds +160°C. The MAX4896 employs a reset input

that allows the user to turn off all outputs simultaneously

with a single control line.

The MAX4896 includes a 10MHz SPI™-/QSPI™-/

MICROWIRE™-compatible serial interface. The serial

interface is compatible with TTL-/CMOS-logic voltage

levels and operates with a single +2.7V to +5.5V sup-

ply. In addition, the SPI output data can be used for

diagnostics purposes including open-load and short-

circuit fault detection.

The MAX4896 is offered in the extended (-40°C to

+85°C) and automotive (-40°C to +125°C) operating

temperature ranges.

19-3843; Rev 2; 12/07

Pin Configuration appears at end of data sheet.

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

≥ 4.5V).

μC

Space-Saving, 8-Channel Relay/Load Driver

INT

Typical Operating Circuit

________________________________________________________________ Maxim Integrated Products

FLAG

RESET

SCLK

DIN

DOUT

General Description

SLPD

PDCD

Vcc = 2.7V TO 5.5V

MAX4896

GND

0.1μF

PGND

OUT1

OUT8

RELAY

COIL 1

RELAY

COIL 8

Industrial Equipment

White Goods

Power-Grid Monitoring

and Protection Equipment

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

*EP = Exposed paddle

+ Denotes a lead-free package.

MAX4896ATP+

MAX4896ETP+

Supports Up to 50V Continuous Drain-to-Source

Voltage

Guaranteed Drive Current:

Built-In Output Clamp Protects Against Inductive

Kickback

+2.7V to +5.5V Logic Supply Voltage

RESET Input Turns Off All Outputs

Simultaneously

Built-in Power-On Reset

Automotive Temperature Range

(-40°C to +125°C)

SPI-/QSPI-/MICROWIRE-Compatible Serial

Interface

Serial Digital Output for Daisy Chaining and

Diagnostics

FLAG Output for µP Interrupt

Open-Load and Short-Circuit Detection and

Protection

Thermal Shutdown

Low 100µA (max) Quiescent Supply Current

Space-Saving, 5mm x 5mm, 20-Pin TQFN Package

PART

200mA (All Channels On)

410mA (Individual Channels)

100mA

≥ 4.5V

≤ 3.6V

-40°C to

RANGE

+125°C

TEMP

+85°C

Ordering Information

PIN-

PACKAGE

20 TQFN-EP*

(5mm x 5mm)

20 TQFN-EP*

(5mm x 5mm)

ATE

Automotive Relay Control

Applications

Features

PACKAGE

T2055-5

CODE

Related parts for MAX4896ATP+

MAX4896ATP+ Summary of contents

Page 1

... Power-Grid Monitoring and Protection Equipment RELAY COIL 1 OUT1 PART V RELAY MAX4896ETP+ RELAY COIL 8 MAX4896ATP+ OUT8 *EP = Exposed paddle PGND + Denotes a lead-free package. SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. Features ≥ 4.5V S 200mA (All Channels On) 410mA (Individual Channels) ≤ ...

Page 2

Space-Saving, 8-Channel Relay/Load Driver ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) V ......................................................................... -0.3V to +7.0V S OUT_ ....................................................................(-0.3V to +50V) Continuous OUT_ Voltage ...................................................+50V CS, SCLK, DIN, RESET, SPLD, PDCD ..................-0.3V to +7.0V DOUT ............................................................-0. PGND ...

Page 3

Space-Saving, 8-Channel Relay/Load Driver ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.5V -40°C to +125°C, unless otherwise noted. Typical values are PARAMETER SYMBOL OUT Clamping Voltage V CLAMP OUT Current-Limit Threshold I LIM OUT ...

Page 4

Page 5

Space-Saving, 8-Channel Relay/Load Driver (T = +25°C, unless otherwise noted.) A QUIESCENT CURRENT vs. SUPPLY VOLTAGE 12 ALL LOGIC INPUTS = +85° +125° ...

Page 6

Space-Saving, 8-Channel Relay/Load Driver (T = +25°C, unless otherwise noted.) A TURN-ON/TURN-OFF DELAY TIME vs. SUPPLY VOLTAGE 3 15V R = 300Ω L OUT C = 50pF L 2.5 2.0 t OFF 1.5 1 0.5 0 ...

Page 7

Space-Saving, 8-Channel Relay/Load Driver PIN NAME Reset Input. Drive RESET low to clear all latches and registers (all outputs are turned off). All OUT RESET 1 pulldown currents are disabled when RESET = low. Chip Select Input. Drive CS low ...

Page 8

Space-Saving, 8-Channel Relay/Load Driver Detail Description The MAX4896 is an 8-channel relay and load driver for medium voltage applications up to 50V. The MAX4896 features built-in inductive kickback protection, drive for latching/nonlatching, or dual-coil relays and an internal register for ...

Page 9

Space-Saving, 8-Channel Relay/Load Driver Table 1. Serial-Input Address DIN D0 D1 OUT_ OUT1 OUT2 Table 2. Serial-Output Address DOUT DO0 DO1 OUT_ OUT1 OUT2 Table 3. Status-Register Output Diagnostic OUTPUT DO_ STATUS STATUS BIT Off Low Normal operation. Fault condtion. ...

Page 10

Space-Saving, 8-Channel Relay/Load Driver The minimum fault-filtering time helps mask short-dura- tion fault conditions, such as driving highly capacitive loads. The typical diagnostics software routine works as follows: • Write data to the MAX4896 • Wait for t maximum to ...

Page 11

Space-Saving, 8-Channel Relay/Load Driver DEVICE 1 DIN DIN SCLK SCLK CS CS Figure 3. Daisy-Chain Configuration RESET SPI/CONTROL INTERFACE DIN DOUT SCLK CS FLAG ______________________________________________________________________________________ V S 0.1μF DEVICE DIN DOUT MAX4896 OUT1 SCLK OUT8 CS GND ...

Page 12

Space-Saving, 8-Channel Relay/Load Driver Pin Configuration TOP VIEW PGND 16 OUT2 17 OUT1 18 MAX4896 *EP + FLAG TQFN 5mm x 5mm *EXPOSED PADDLE. CONNECT TO PGND. 12 ...

Page 13

Space-Saving, 8-Channel Relay/Load Driver (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) ______________________________________________________________________________________ Package Information 13 ...

Page 14

Space-Saving, 8-Channel Relay/Load Driver (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 14 ______________________________________________________________________________________ Package Information (continued) ...

Page 15

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 © 2007 Maxim Integrated Products DESCRIPTION is a registered trademark of Maxim Integrated Products, Inc ...

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