ata6838c ATMEL Corporation, ata6838c Datasheet

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ata6838c

Manufacturer Part Number
ata6838c
Description
Hex Half-bridge Driver With Serial Input Control
Manufacturer
ATMEL Corporation
Datasheet
Features
1. Description
The Atmel
Power SOI technology, used to control up to six different loads by a microcontroller in
automotive and industrial applications.
Each of the six high-side and six low-side drivers is capable of driving currents up to
950mA. The drivers are internally connected to form six half-bridges and can be
controlled separately from a standard serial data interface. Therefore, all kinds of
loads, such as bulbs, resistors, capacitors and inductors, can be combined. The IC
especially supports the application of H-bridges to drive DC motors.
Protection is guaranteed in terms of short-circuit conditions, overtemperature and
undervoltage. Various diagnosis functions and a very low quiescent current in standby
mode make a wide range of applications possible.
Automotive qualification referring to conducted interferences, EMC protection and
ESD protection gives added value and enhanced quality for the exacting requirements
of automotive applications.
Six Half-bridge Outputs Formed by Six High-side and Six Low-side Drivers
Capable of Switching all Kinds of Loads (Such as DC Motors, Bulbs, Resistors,
Capacitors and Inductors)
R
Up to 950-mA Output Current
Very Low Total Quiescent Current I
Outputs Short-circuit Protected
Overtemperature Prewarning and Protection
Undervoltage Protection
Various Diagnosis Functions Such as Shorted Output, Open Load, Overtemperature
and Power Supply Fail
Serial Data Interface
Operation Voltage up to 40V
Daisy Chaining Possible
Serial Interface 5V Compatible, up to 2MHz Clock Frequency
QFN24 5mm
DSon
Typically 1.0 at 25°C, Maximum 1.8 at 150°C
®
ATA6838C is a fully protected hex half-bridge driver designed in Smart
5mm Power Package
S
< 2µA in Standby Mode
Atmel ATA6838C
Preliminary
Hex Half-bridge
Driver with
Serial Input
Control
9237B–AUTO–09/11

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ata6838c Summary of contents

Page 1

... Power Package 1. Description ® The Atmel ATA6838C is a fully protected hex half-bridge driver designed in Smart Power SOI technology, used to control up to six different loads by a microcontroller in automotive and industrial applications. Each of the six high-side and six low-side drivers is capable of driving currents up to 950mA ...

Page 2

... Block Diagram QFN24 Input register Ouput register CLK INH Fault Detect Fault Detect 11 OUT1 Atmel ATA6838C [Preliminary ...

Page 3

... Serial data output; 5V CMOS logic level tri-state output for output (status) register data; sends 16-bit status 13 DO information to the microcontroller (LSB is transferred first). Output will remain tri-stated unless device is selected low, therefore, several ICs can operate on one data output line only 9237B–AUTO–09/11 Atmel ATA6838C [Preliminary] 5, 0.65mm pitch OUT4 SENSE ...

Page 4

... DI expects a 16-bit control word with LSB being transferred first 20 OUT6 Output 6; see pin 1 21 OUT6 SENSE Only for testability in final test 22 OUT5 SENSE Only for testability in final test 23 OUT5 Output 5; see pin Internal bond to GND Atmel ATA6838C [Preliminary 2MHz) max 9237B–AUTO–09/11 ...

Page 5

... TP SLS1 SHS1 Table 3-1. Bit 9237B–AUTO–09/11 Atmel ATA6838C [Preliminary] LS2 HS2 LS3 LS4 HS3 HS4 SLS2 SHS2 SLS3 SHS3 SLS4 SHS4 Input Data Protocol Input Register Function Status register reset (high = reset; the bits PSF, SCD and ...

Page 6

... Bit 11 (SI) (SCT) (OLD) (HS6) (LS6 Atmel ATA6838C [Preliminary] 6 Output Data Protocol Output (Status) Register Function Temperature prewarning: high = warning TP (overtemperature shutdown see remark below) Normal operation: high = output is on, low = output is off Open-load detection: high = open load, low = no open load ...

Page 7

... In both cases, all output stages are turned off but the serial interface stays active. The output stages can be activated again by bit (when INH = VCC pin INH switched back to VCC (when SI = 1). 9237B–AUTO–09/11 Atmel ATA6838C [Preliminary reached, the power supply fail bit (PSF) in the output reg- dUV , – ...

Page 8

... Logic output voltage Input current Output current Output current Output voltage Junction temperature range Storage temperature range 5. Thermal Resistance Table 5-1. QFN24: Depends on the PCB-board Parameter Test Conditions Junction pin Junction ambient Atmel ATA6838C [Preliminary] 8 Pin QFN24 Symbol ...

Page 9

... Type means 100% tested 100% correlation tested Characterized on samples Design parameter Notes: 1. Delay time between rising edge of input signal at pin CS after data transmission and switch on/off output stages to 90% of final level. Device not in standby for t > 1ms. 9237B–AUTO–09/11 Atmel ATA6838C [Preliminary] Pin QFN24 Symbol ...

Page 10

... Type means 100% tested 100% correlation tested Characterized on samples Design parameter Notes: 1. Delay time between rising edge of input signal at pin CS after data transmission and switch on/off output stages to 90% of final level. Device not in standby for t > 1ms. Atmel ATA6838C [Preliminary] 10 < 150°C; unless otherwise specified, all values refer to GND pins. j ...

Page 11

... Delay time between rising edge of input signal at pin CS after data transmission and switch on/off output stages to 90% of final level. Device not in standby for t > 1ms. 9237B–AUTO–09/11 Atmel ATA6838C [Preliminary] < 150°C; unless otherwise specified, all values refer to GND pins. j ...

Page 12

... Input register bit 14 (SCT) = low CLK high time CLK low time CLK period time CLK setup time CLK setup time DI setup time DI hold time Atmel ATA6838C [Preliminary] 12 < 150°C; unless otherwise specified, all values refer to GND pins. j Symbol Pin QFN24 17-19 V ...

Page 13

... Figure 8-1. Serial Interface Timing Diagram with Item Numbers CLK 3 DI CLK DO Inputs DI, CLK, CS: High level = 0.7 Output DO: High level = 0.8 9237B–AUTO–09/11 Atmel ATA6838C [Preliminary low level = 0 low level = 0 ...

Page 14

... Figure 10-1. Application Circuit VCC S I Enable U5021M Watchdog Input register Ouput register CLK CS Fault Detect INH DO Fault VCC Detect Atmel ATA6838C [Preliminary] 14 Test Conditions ISO 7637-1 VDE 0879 Part 2 ESD S 5.1 ESD STM5.3 ESD STM5 ...

Page 15

... Only for the QFN24 versions: The sense pins OUTx SENSE can either be left open or can be connected to the adjacent OUTx pin. Never use the sense pins OUTx SENSE as power outputs. 9237B–AUTO–09/11 Atmel ATA6838C [Preliminary] and V as close as possible to the power supply CC ...

Page 16

... Extended Type Number ATA6838C-PXQW 12. Package Information 12.1 QFN24 Package: QFN Exposed pad 3.6 x 3.6 (acc. JEDEC OUTLINE No. MO-220) Dimensions in mm Not indicated tolerances ±0. Drawing-No.: 6.543-5122.01-4 Issue: 1; 15.11.05 Atmel ATA6838C [Preliminary] 16 Package Remarks QFN24 Taped and reeled, Pb-free 0.9 ±0.1 +0 0.05 -0. 0.65 nom. ...

Page 17

... Atmel , Atmel logo and combinations thereof, and others are registered trademarks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellec- tual property right is granted by this document or in connection with the sale of Atmel products ...

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