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The T6818/T6828 are fully protected driver interfaces designed in 0.8-m BCDMOS technology. They are used to control up to 3 different loads by a microcontroller in automotive and industrial applications.
Each of the 3 high-side and 3 low-side drivers is capable to drive currents up to 1.5 A. The drivers are internally connected to form 3 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 design especially supports the application of H-bridges to drive DC motors.
Protection is guaranteed regarding short-circuit conditions, overtemperature and undervoltage. Various diagnostic functions and a very low quiescent current in stand-by-mode opens a wide range of applications. Automotive qualification (protection against conducted interferences, EMC protection and 2-kV ESD protection) gives added value and enhanced quality for exacting requirements of automotive applications.
T6818 Maximum Ratings
Parameter
Pin
Symbol
Value
Unit
Supply voltage
3
VVS
-0.3 to +40
V
Supply voltage t < 0.5 s; IS > -2 A
3
VVS
-1
V
Logic supply voltage
11
VVCC
-0.3 to +7
V
Logic input voltage
4 to 6, 10
VCS,VDI, VCLK, VINH
-0.3 to VVCC+0.3
V
Logic input voltage
9
VDO
-0.3 to VVCC+0.3
V
Input current
4 to 6, 10
ICS,IDI, ICLK, IINH
-10 to +10
mA
Output current
9
IDO
-10 to +10
mA
Output current
2, 12 and 13
IOut3, IOut2, IOut1
Internallimited, seeoutput specification
Output voltage
2, 12 and 13
IOut3, IOut2, IOut1
-0.3 to +40
V
Reverse conducting current (tPulse = 150 ms)
2, 12 and 13 towards pin 3
IOut3, IOut2, IOut1
17
A
Junction temperature range
Tj
-40 to +150
Storage temperature range
TSTG
-55 to +150
T6818 Features
• Supply Voltage up to 40 V • RDSon Typically 0.5 at 25 C, Maximum 1 at 150 C • Up to 1.5 A Output Current • Three Half-bridge Outputs Formed by Three High-side and Three Low-side Drivers • Capable to Switch all Kinds of Loads Such as DC Motors, Bulbs, Resistors, Capacitors and Inductors • No Shoot-through Current • Very Low Quiescent Current IS < 5 A in Standby Mode versus Total Temperature Range • Outputs Short-circuit Protected • Overtemperature Protection for Each Switch and Overtemperature Prewarning • Undervoltage Protection • Various Diagnostic Functions Such as Shorted Output, Open-load, Overtemperature and Power-supply Fail Detection • Serial Data Interface, Daisy Chain Capable, up to 2 MHz Clock Frequency • SO14 Power Package