ATA6837_09 ATMEL [ATMEL Corporation], ATA6837_09 Datasheet

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ATA6837_09

Manufacturer Part Number
ATA6837_09
Description
High Temperature Hex Half-bridge Driver with Serial Input Control
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
Features
1. Description
The ATA6837 is designed for high-temperature applications. In mechatronic solutions,
for example, turbo charger or exhaust gas recirculation systems, many flaps have to
be controlled by DC motor driver ICs which are located very close to the hot engine or
actuator and where ambient temperatures up to 150°C are usual. Due to the advan-
tages of SOI technology, junction temperatures up to 200°C are allowed. This enables
new cost-effective board design possibilities to achieve complex mechatronic
solutions.
The ATA6837 is a fully protected hex half-bridge driver, used to control up to 6 differ-
ent 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
650 mA. The drivers are internally connected to form 6 half-bridges and can be con-
trolled separately from a standard serial data interface. Therefore, all kinds of loads,
such as bulbs, resistors, capacitors and inductors, can be combined. The IC espe-
cially 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 650-mA Output Current
Very Low 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 2 MHz Clock Frequency
QFN24 Package
DSon
Typically 1.0 at 25°C, Maximum 2.2 at 200°C
S
< 20 µA in Standby Mode
High
Temperature
Hex Half-bridge
Driver with
Serial Input
Control
ATA6837
4953E–AUTO–09/09

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ATA6837_09 Summary of contents

Page 1

Features • 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 Typically 1.0 at 25°C, Maximum 2.2 at 200°C ...

Page 2

Figure 1-1. Block Diagram QFN24 Input register Ouput register CLK INH Fault Detect Fault Detect 11 OUT1 ATA6837 ...

Page 3

Pin Configuration Figure 2-1. Pinning QFN 24, 5 Note: Table 2-1. Pin Description QFN24 Pin Symbol Function 1 OUT4 SENSE Only for testability in final test Half-bridge output 4; formed by internally connected power MOS high-side switch 4 and ...

Page 4

Table 2-1. Pin Description QFN24 (Continued) Pin Symbol Function Chip select input; 5V CMOS logic level input with internal pull up low = serial communication is enabled, high = disabled Serial clock input; 5V CMOS logic level input ...

Page 5

Functional Description 3.1 Serial Interface Data transfer starts with the falling edge of the CS signal. Data must appear at DI synchronized to CLK and is accepted on the falling edge of the CLK signal. LSB (bit 0, SRR) ...

Page 6

Table 3-2. Bit Note: Table 3-3. Status of the Input Register After Power on Reset Bit 15 Bit 14 Bit 13 Bit 12 Bit ...

Page 7

Power-supply Fail In case of undervoltage at pin VS, an internal timer is started. When during a permanent under- voltage the delay time (t set and all outputs are disabled. When normal voltage is present again, the outputs are ...

Page 8

Absolute Maximum Ratings Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated ...

Page 9

Electrical Characteristics 7.5V < V < 40V; 4.75V < V < 5.25V; INH = High; –40°C < pins. No. Parameters Test Conditions 1 Current Consumption V V Total quiescent current V 1.1 (V and all outputs ...

Page 10

Electrical Characteristics (Continued) 7.5V < V < 40V; 4.75V < V < 5.25V; INH = High; –40°C < pins. No. Parameters Test Conditions Thermal shutdown 4.6 hysteresis Ratio thermal 4.7 shutdown/thermal prewarning Ratio thermal 4.8 shutdown/thermal ...

Page 11

Electrical Characteristics (Continued) 7.5V < V < 40V; 4.75V < V < 5.25V; INH = High; –40°C < pins. No. Parameters Test Conditions Low-side open load Input register bit 13 5.13 detection current (OLD) = low, ...

Page 12

Electrical Characteristics (Continued) 7.5V < V < 40V; 4.75V < V < 5.25V; INH = High; –40°C < pins. No. Parameters Test Conditions 8 Serial Interface: Logic Output DO 8.1 Output voltage low level I OL ...

Page 13

Figure 8-1. Serial Interface Timing Diagram with Chart Numbers CLK 3 DI CLK DO Inputs DI, CLK, CS: High level = 0.7 Output DO: High level = 0.8 4953E–AUTO–09/ ...

Page 14

Noise and Surge Immunity Parameters Conducted interferences Interference suppression ESD (Human Body Model) CDM (Charge Device Model) MM (Machine Model) Note: 1. Test pulse 40V vbmax 10. Application Circuit Figure 10-1. Application Circuit VCC S I ...

Page 15

Application Notes • Connect the blocking capacitors at V GND pins. • Recommended value for capacitors at V Electrolytic capacitor C > 22 µF in parallel with a ceramic capacitor C = 100 nF. Value for electrolytic capacitor depends ...

Page 16

Ordering Information Extended Type Number ATA6837-PXQW 12. Package Information 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: ...

Page 17

Revision History Please note that the following page numbers referred to in this section refer to the specific revision mentioned, not to this document. Revision No. 4953E-AUTO-09/09 4953D-AUTO-10/08 4953C-AUTO-09/07 4953B-AUTO-07/07 4953E–AUTO–09/09 History Section 7 “Electrical Characteristics” number 1.7 on ...

Page 18

Headquarters Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131 USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to ...

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