ATA6623 ATMEL Corporation, ATA6623 Datasheet - Page 11

• Manufacturer Part Number: ATA6623
• Description: LIN Bus Transceiver with 3.3V Voltage Regulator
• Manufacturer: ATMEL Corporation

6. Voltage Regulator
4957D–AUTO–07/07
Figure 6-1.
The voltage regulator needs an external capacitor for compensation and to smooth the distur-
bances from the microcontroller. It is recommended to use an electrolythic capacitor with
C > 10 µF and a ceramic capacitor with C = 100 nF. The values of these capacitors can be var-
ied by the customer, depending on the application.
With this special SO8 package (fused lead frame to pin3) an R
Therefore, it is recommended to connect pin 3 with a wide GND plate on the printed board to get
a good heat sink.
The main power dissipation of the IC is created from the V
needed for the application.
Figure 6-2
shows the safe operating area of the ATA6623/ATA6625.
5.5V/3.8V
5V/3.3V
5V/3.3V
NRES
V
VCC
V
12V
CC
VS
thun
Voltage Regulator: Ramp Up and Undervoltage
t
VCC
ATA6623/ATA6625 [Preliminary]
t
Reset
thja
CC
of 80 K/W is achieved.
output current I
t
res_f
VCC
, which is
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