ATA6834-DK Atmel, ATA6834-DK Datasheet - Page 7

• Manufacturer Part Number: ATA6834-DK
• Description: BOARD BLDC MOTOR CTRL ATA6833/34
• Manufacturer: Atmel
• Type: MOSFET & Power Driverr

Specifications of ATA6834-DK

• Main Purpose: Power Management, Motor Control
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: ATA6833 / ATA6834, ATmega32M1
• Primary Attributes: 3-Ph BLDC, IC with FET Driver, LIN Transceiver, Volt Regulator, Watchdog
• Secondary Attributes: LCD with Touch Screen on MCU Controller Board
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.3
Figure 3-2.
9122G–AUTO–10/10
4 0
3 0
2 0
3 5
2 5
5V/3.3V VCC Regulator
10
15
0
5
0
ESR versus Load Current for External Capacitors with Different Values
ESR versus Load Current at Pin VCC
2 5
ESR
ESR
Load Current (mA)
max
min
50
(C
(C
VCC
VCC
The 5V/3.3V regulator is fully integrated. It requires an external electrolytic capacitor in the
range of 2.2µF up to 10µF and with an ESR in the range from 2 to 15 for stability (see
ure
to either pin VINT or GND. Since the regulator is not designed to be switched between both
output voltages during operation, it is advisable to hard-wire VMODE pin. The logic levels of
the microcontroller interface are adapted to the VCC regulator output voltage. The maximum
output current (I
reduced to 80mA. The VCC regulator has a built-in short circuit protection. A comparator
checks the output voltage of the VCC regulator and keeps the external microcontroller in reset
as long as the voltage is below the lower operation minimum (shown in
Figure 3-3.
= 2.2µF)
= 2.2µF)
3-2). The output voltage can be configured as either 5V or 3.3V by connecting pin VMODE
75
10 0
/RESET as Function of the VCC Output Voltage
100% VCC
OS1
88% VCC
80% VCC
12 5
) of the regulator is 100mA. For T
Atmel ATA6833/ATA6834 [Preliminary]
/RESET
VCC
0V
150
2 0
2 5
10
15
0
5
0
ESR versus Load Current at Pin VCC
2 5
ESR
J
> 150°C the I
ESR
min
Load Current (mA)
(C
50
max
VCC
(C
= 10µF)
VCC
= 10µF)
75
OS1
Figure
10 0
of Atmel
3-3).
12 5
®
ATA6834 is
150
Fig-
7