ATA6824-MFQW Atmel, ATA6824-MFQW Datasheet - Page 5

• Manufacturer Part Number: ATA6824-MFQW
• Description: IC H-BRIDGE MOTOR DRIVER
• Manufacturer: Atmel

Specifications of ATA6824-MFQW

• Applications: DC Motor Controller
• Number Of Outputs: 1
• Voltage - Supply: 6.5 V ~ 21.3 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Voltage - Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

4. Application
4.1
5. Functional Description
5.1
5.1.1
4931L–AUTO–02/11
General Remark
Power Supply Unit with Supervisor Functions
Power Supply
This chapter describes the principal application for which the Atmel
Because Atmel cannot be considered to understand fully all aspects of the system, application
and environment, no warranties of fitness for a particular purpose are given.
Table 4-1.
The IC is supplied by a reverse-protected battery voltage. To prevent it from destruction,
proper external protection circuitry has to be added. It is recommended to use at least a
capacitor combination of storage and HF caps behind the reverse protection circuitry and
closed to the VBAT pin of the IC (see
An internal low-power and low drop regulator (V
tor, provides the necessary low-voltage supply for all internal blocks except the digital IO pins.
This voltage is also needed in the wake-up process. The low-power band gap reference is
trimmed and is used for the bigger VCC regulator, too. All internal blocks are supplied by the
internal regulator.
Note:
Nothing inside the IC except the logic interface to the microcontroller is supplied by the
5V/3.3V VCC regulator.
A power-good comparator checks the output voltage of the V
chip in reset as long as the voltage is too low.
There is a high-voltage switch which brings out the battery voltage to the pin VBATSW for
measurement purposes. This switch is switched ON for VCC = HIGH and stays ON in case of
a watchdog reset. The signal can be used to switch on external voltage regulators, etc.
Component Function
C
C
R
C
C
C
R
C
C
VRES
VINT
RWD
VCC
SIO
CC
CC
VG
CP
The internal supply voltage V
Blocking capacitor at VINT
Blocking capacitor at VCC
Cross conduction time definition capacitor
Cross conduction time definition resistor
Blocking capacitor at VG
Charge pump capacitor
Reservoir capacitor
Watchdog time definition resistor
Filter capacitor for SIO
Typical External Components (See also
INT
must not be used for any other supply purpose!
Figure 1-1 on page
INT
), stabilized by an external blocking capaci-
Figure 1-1 on page
Value
220nF, 10V, X7R
2.2µF, 10V, X7R
Typical 680pF, 100V, COG
Typical 10k
Typical 470nF, 25V, X7R
Typical 220nF, 25V, X7R
Typical 470nF, 25V, X7R
Typical 51k
Typical 220pF, 100V
2).
INT
regulator and keeps the whole
Atmel ATA6824
®
ATA6824 was designed.
2)
Tolerance
50%
50%
50%
5