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ATA6834 데이터시트 PDF




ATMEL Corporation에서 제조한 전자 부품 ATA6834은 전자 산업 및 응용 분야에서
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부품번호 ATA6834 기능
기능 (ATA6833 / ATA6834) BLDC Motor Driver and LIN System Basis Chip
제조업체 ATMEL Corporation
로고 ATMEL Corporation 로고


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ATA6834 데이터시트, 핀배열, 회로
Features
ATA6833 Temperature Range TJ = 150°C
ATA6834 Extended Temperature Range TJ = 200°C
Direct Driving of 6 External NMOS Transistors with a Maximum Switching Frequency of
50 kHz
Integrated Charge Pump to Provide Gate Voltages for High-side Drivers and to Supply
the Gate of the External Battery Reverse Protection NMOS
Built-in 5V/3.3V Voltage Regulator with Current Limitation
Reset Signal for the Microcontroller
Sleep Mode with Supply Current of typically < 45 µA
Wake-up via LIN Bus or High Voltage Input
Programmable Window Watchdog
Battery Overvoltage Protection and Battery Undervoltage Management
Overtemperature Warning and Protection (Shutdown)
200 mA Peak Current for Each Output Driver
LIN Transceiver Conformal to LIN 2.1 and SAEJ2602-2 with Outstanding EMC and ESD
Performance
QFN48 Package 7 mm × 7 mm
1. Description
The ATA6833 and ATA6834 are system basis chips for three-phase brushless DC
motor controllers designed in Atmel®’s state-of-the-art 0.8 µm SOI technology
SMART-I.S.1. In combination with a microcontroller and six discrete power MOS-
FETs, the system basis chip forms a BLDC motor control unit for automotive
applications. In addition, the circuits provide a 3.3V/5V linear regulator and a window
watchdog.
The circuit includes various control and protection functions like overvoltage and over-
temperature protection, short circuit detection, and undervoltage management.
Thanks to these function blocks, the driver fulfils a maximum of safety requirements
and offers a high integration level to save cost and space in various applications. The
target applications are most suitable for the automotive market due to the robust tech-
nology and the high qualification level. ATA6834, in particular, is designed for
applications in a high-temperature environment.
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BLDC Motor
Driver and LIN
System Basis
Chip
ATA6833
ATA6834
Preliminary
9122D–AUTO–09/09




ATA6834 pdf, 반도체, 판매, 대치품
Table 2-1.
Pin
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
Pin Description
Symbol
IL2
IH2
IL1
IH1
RXD
DG1
DG2
DG3
H3
S3
H2
S2
H1
S1
CPOUT
CPHI2
CPLO2
CPHI1
CPLO1
NC
PBAT
VG
L1
L2
L3
PGND
VCC
NC
VBAT
EN2
VBATSW
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I/O Function
I Control Input for output L2
I Control Input for output H2
I Control Input for output L1
I Control Input for output H1
O Receive signal from LIN bus for microcontroller
O Diagnostic output 1
O Diagnostic output 2
O Diagnostic output 3
O Gate voltage high-side 3
I/O Voltage at half bridge 3
O Gate voltage high-side 2
I/O Voltage at half bridge 2
O Gate voltage high-side 1
I/O Voltage at half bridge 1
I/O Charge pump output capacitor
I Charge pump capacitor 2
O Charge pump capacitor 2
I Charge pump capacitor 1
O Charge pump capacitor 1
Connect to GND
I Power supply (after reverse protection) for charge pump and gate drivers
I/O Blocking capacitor
O Gate voltage H-bridge, low-side 1
O Gate voltage H-bridge, low-side 2
O Gate voltage H-bridge, low-side 3
I Power ground for H-bridge and charge pump
O 5V/100 mA supply for microcontroller
Connect to GND
I Supply voltage for IC core (after reverse protection)
I High voltage enable input
O 100Ω PMOS switch from VBAT
4 ATA6833/ATA6834 [Preliminary]
9122D–AUTO–09/09

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ATA6834 전자부품, 판매, 대치품
ATA6833/ATA6834 [Preliminary]
www.DataSheet4U.com
3.3 5V/3.3V VCC Regulator
The 5V/3.3V regulator is fully integrated. It requires an external electrolytic capacitor in the range
of 2.2 µF up to 10 µF and with an ESR in the range from 2Ω to 15Ω for stability (see Figure 3-2).
The output voltage can be configured as either 5V or 3.3V by connecting pin VMODE to either
pin VINT or GND. Since the regulator is not designed to be switched between both output volt-
ages 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 (IOS1) of the regulator is 100 mA. For TJ > 150°C the IOS1 of ATA6834 is reduced to
80 mA. 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 volt-
age is below the lower operation minimum (shown in Figure 3-33).
Figure 3-2.
40
35
30
25
20
15
10
5
0
0
ESR versus Load Current for External Capacitors with Different Values
ESR versus Load Current at Pin VCC
ESR versus Load Current at Pin VCC
25
ESRmax (CVCC = 2.2 µF)
20
ESRmax (CVCC = 10 µF)
15
10
ESRmin (CVCC = 2.2 µF)
2 5 50
75 10 0 12 5 150
Load Current (mA)
5
ESRmin (CVCC = 10 µF)
0
0 2 5 50 75 10 0 12 5
Load Current (mA)
150
Figure 3-3.
/RESET as Function of the VCC Output Voltage
VCC
100% VCC
88% VCC
80% VCC
0V
/RESET
9122D–AUTO–09/09
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