T6801-TAQY Atmel, T6801-TAQY Datasheet - Page 3

• Manufacturer Part Number: T6801-TAQY
• Description: MOSFET & Power Driver ICs 25 mA Driver w/ thermal monitoring
• Manufacturer: Atmel
• Type: Single Channel Driver ICr

Specifications of T6801-TAQY

• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC
• Minimum Operating Temperature: - 40 C
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

4. Functional Description
4.1
4.2
4.3
4.4
4761B–AUTO–09/05
General
Current Limitation of the Output Stages and Overtemperature Shutdown
Transients and Load Dump
Low-voltage Detection
ON state: Low level at the input stage activates the output stage.
OFF state: The internal pull-up resistor provides high level to the input comparator and deacti-
vates the output stage.
A 7V Zener diode between input pin and GND is capable of ±10 mA clamping current.
A temperature-dependent current limitation in the range of 25 to 100 mA protects the stage in
case of a short circuit. Additionally, the chip temperature is monitored. For T
output is disabled and automatically enabled with a hysteresis of T
An integrated 28V Zener diode protects the output stage against transients and load-dump
(Schaffner pulses). With the help of an external 1 k resistor, the output transistor is capable of
handling the corresponding current which flows during each of these conditions. Apart from that,
the output is short-circuit and overload protected.
When the supply voltage is switched on, a power-on reset pulse is generated internally which
disables the output stage until a defined supply-voltage level is reached. The low-voltage detec-
tion is provided with a hysteresis of V
Figure 4-1.
Application Schematic
controller
Micro-
V
I
hyst
100 nF
= 0.5V typically.
T6801
V
S
= 5 V
V
O
C
Load
470 pF
Chip
V
1 k
Batt
R
> 5°C.
Chip
> 148°C, the
T6801
3