|
|
PDF AS8650B Data sheet ( Hoja de datos )
| Número de pieza | AS8650B | |
| Descripción | High-efficient Power Management Device | |
| Fabricantes | ams | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AS8650B (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
AS8650B
High-efficient Power Management Device with High-speed CAN
Interface
1 General Description
2 Key Features
The AS8650B is a companion IC which combines power
management functions and a fully conforming high-speed CAN
Transceiver in one high performance analog device for automotive
applications. The AS8650B is powered by the battery, provides 4
output voltage levels of which 3 outputs in the range of 1.8V to 3.3V
with a maximum current consumption up to 120mA at the LDO
voltage regulator outputs. An integrated DCDC converter with a very
high efficiency for the 5V output supplies the 3 voltage regulators
and ensures a voltage stability of ±2.5%. The combination of DCDC
converter with low-drop-out voltage regulators makes the AS8650B
suitable for all Automotive Control Units where power efficiency is a
must.
The AS8650B provides a high-speed CAN interface up to 1Mbps
communication rate conforming to ISO 11898-5. The AS8650B
provides wake-up via remote wake-up at CAN bus lines and a local
wake pin. The watchdog unit provides three different timing
functions: start-up, window- and timeout watchdog; configurable via
the SPI and I²C interface.
Voltage monitoring is implemented for the battery supply, DCDC
output and the 3 LDO regulator outputs. Undervoltage will be
signalled on the INTN pin to the microcontroller. All diagnostics and
status flags can be accessed with the SPI interface.
The product is available in a 36-pin QFN (6x6x0.9) package.
DCDC converter for 5V output with very high efficiency
Three voltage regulators providing 3.3V, 2.8V and 1.8V with
accuracy better than 2.5% (Two are adjustable through factory
settings).
High-speed CAN interface (ISO 11898-5) with remote wake-up
Comprehensive voltage monitoring
Configurable watchdog functions for start-up, operation, and
standby
Automatic thermal shutdown protection
Excellent EMC performance with outstanding switching
technology for the DCDC converter
Ambient temperature range from -40°C to +105°C in maximum
load conditions
Lead-free 36-pin QFN (6x6x0.9) package
3 Applications
The AS8650B provides high efficient and flexible power supply
together with state-of-the-art high-speed CAN Interface for
automotive control units.The device is pin compatible with AS8550
(LIN interface) in order to change from CAN to LIN easy.
Figure 1. AS8650B Block Diagram
I2C_EN
CSSPI
SCLKI2C / SCLKSPI
SDAI2C / SDISPI
SDOSPI
INTN
CANH
SPLIT
CANL
RxD
TxD
RESET
VSUP
AS8650B
I2C DC / DC Converter 5V
SPI
High-speed
CAN
Transceiver
Watchdog
Digital
Logic
Configurable
Voltage
Regulator
Configurable
Voltage
Regulator
Configurable
Voltage
Regulator
FB
LX
V5V_LDO1
V5V_LDO2
V5V_LDO3
VREG
VREG
VREG
WAKE
GND
www.ams.com/AS8650
Revision 1.1
1 - 46
1 page  
AS8650B
Datasheet - Pin Assignments
Table 1. Pin Descriptions
Pin Pin Name
11 I2C_EN
12 SDAI2C / SDISPI
13 SDOSPI
14 SCLKI2C / SCLKSPI
15 CSSPI
16 RxD
17 INTN
18 TxD
19 RESET
20
21 Reserved
22
23 VLDO1
24 VLDO1FB
25
26
27
28
29
30
31
32
33, 34, 35
0
VLDO2FB
VLDO2
VLDO3FB
VLDO3
V5V_LDO1
V5V_LDO3
V5V_LDO2
FB (DCDC)
LX (DCDC)
GND
Pin Type
Digital Input
Digital Input/Output
/ Digital Input
Digital Output
Digital Input
Digital input with pull-up
Digital output with pull-up
Digital Output
Digital input with pull-up
Digital Output
Pin with Digital / Analog Input /
Open-Drain-Output
Analog Input / Output
Description
I²C/SPI select signal (High = I²C, Low = SPI)
Unidirectional for SPI, Bidirectional for I²C
SPI data out
Serial clock (Multiplexed for I²C and SPI) unidirectional
SPI chip select
CAN Transceiver receive signal
Active low interrupt to µC. Generated if status / diagnostic is
updated.
CAN Transceiver transmit signal
Digital Output referenced to VLDO1, active low
Reserved
Power Supply Input
Pin with Digital / Analog Input /
Open-Drain-Output
Pin with Digital / Analog Input /
Open-Drain-Output
Power Supply Input
Pin with Digital / Analog Input /
Open-Drain-Output
Power Supply Input
Analog Input
Power Supply Input
Regulated voltage output
Regulated voltage feedback
Regulated voltage feedback
Regulated voltage output
Regulated voltage feedback
Regulated voltage output
Step-down converter 5V output, supply for LDO1
Step-down converter 5V output, supply for LDO3
Step-down converter 5V output, supply for LDO2
DCDC output voltage feedback
DCDC output
Exposed pad (GND)
www.ams.com/AS8650
Revision 1.1
5 - 46
5 Page 
AS8650B
Datasheet - Electrical Characteristics
Table 9. DC Electrical Characteristics
Symbol
Parameter
V_RxD_hys
Differential receiver hysteresis
voltage
I_RxD_LEAK
R_IN_cm
R_IN_cm_m
R_IN_diff
VO_SPLIT
Input leakage current
Common mode input resistance
Common mode input resistance
matching
Differential input resistance
Output voltage on SPLIT pin
IL_SPLIT
Leakage current on SPLIT pin
Conditions
-12V < V_CANH < 12V
-12V < V_CANL < 12V
Receive-only mode (CAN receiver)
V5V_LDO1 = 0V;
V_CANH = V_CANL = 5V
Tested in Receive-only mode
V_CANH = V_CANL
(Tested in Receive-only mode)
Tested in Receive-only mode
Normal mode
-500µA < I_SPLIT < 500µA
Standby mode
0V < V_SPLIT < 35V
(Not production tested)
Standby mode
-22V < V_SPLIT < 0
(Not production tested)
Min Typ Max Units
20 130 mV
100
15
-3
25
0.3*
V5V_LDO1
-5
250 µA
35 kΩ
+3 %
75
0.7*
V5V_LDO1
kΩ
V
+5 µA
-1 +1 mA
Table 10. AC Electrical Characteristics
Symbol
Parameter
t_TxD_BUS_on
Delay TxD to bus dominant
t_TxD_BUS_off
Delay TxD to bus recessive
t_BUS_on_RxD
Delay bus dominant to RxD
t_BUS_off_RxD
Delay bus recessive to RxD
t_TxD_RxD
Propagation Delay TxD to RxD
WAKE UP via BUS
t_BUS_WR
Dominant time for wake-up detection
via bus
BUS Diagnostic
t_OC_CANH Time to detect over current CANH
t_LC_CANH Time to detect low current CANH
t_OC_CANL Time to detect over current CANL
t_LC_CANL
Time to detect low current CANL
Conditions
V_TxD = 0V, V_CANH = 0V
(Not production tested)
V_TxD = 0V, V_CANH = 40V
(Not production tested)
V_TxD = 0V, V_CANL = 40V
(Not production tested)
V_TxD = 0V, V_CANL = 0V
(Not production tested)
Min Typ Max Units
10 110 ns
10 140 ns
15 115 ns
20 160 ns
40 255 ns
0.75 5 µs
60 µs
60 µs
60 µs
60 µs
Table 11. Temperature Limiter
Symbol
Parameter
Conditions
Min Typ Max Units
Tjshut
Shut down temperature
Junction temperature when IC shuts down 150 170 185
ºC
Tjrecv
Recovery temperature
Junction temperature below which state
machine returns from shutdown / warning
125
140
155
ºC
Tjwarn
Over-temperature warning flag set
Junction temperature beyond which the
warning flag is set
140
157
175
ºC
www.ams.com/AS8650
Revision 1.1
11 - 46
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AS8650B.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AS8650B | High-efficient Power Management Device | ams |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |