|
|
PDF AS1902 Data sheet ( Hoja de datos )
| Número de pieza | AS1902 | |
| Descripción | Ultra Low-Power uP Supervisory Circuit | |
| Fabricantes | austriamicrosystems AG | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AS1902 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
AS1901, AS1902, AS1903
Ultra Low-Power µP Supervisory Circuit
Data Sheet
1 General Description
The AS1901/2/3 family is an ultra low-power supervisory
circuit device.
The device can be used to monitor the supply voltage of
digital systems and microprocessors and initiate a reset
when the voltage goes below a predefined threshold.
The duration of the reset is 5/20/100/500ms (typ.) after
the supply voltage has risen above the threshold.
The AS1901/2/3 exhibit excellent reliability and can
reduce application costs by eliminating all external com-
ponents.
The device is available with different output drivers:
! The AS1901 has a push-pull driver with an active low
reset.
! The AS1902 uses the same output stage as the
AS1901, but has an active high reset.
! The AS1903 has an open drain output with active low
reset.
All devices operate down to a voltage of 1V.
The reset thresholds are factory-trimmable between
2.2V and 3.08V in steps of approximately 100mV.
Each device of the AS1901/2/3 family is offered with four
time-out periods of 5/20/100/500ms.
The extremely low current consumption of only 230nA
(typ) at 3.3V makes the device ideal for use in portable
applications.
All devices are available in a 3-pin SOT23 package.
2 Key Features
! Low 230nA (typ) Supply Current
! Precision Monitoring of 2.5-, 3-, and 3.3V-Power
Supplies
! Supply Voltage Range: 1.0 to 3.6V
! Reset Threshold Range: 2.2 to 3.1V
! Available in 3 Versions:
- AS1901 Push Pull RESETN
- AS1902 Push Pull RESET
- AS1903 Open Drain RESETN
! 4 Time-Out Periods Ranging from 5 to 500ms
! Detection Voltage Accuracy: ±1.5%
! Temperature Range: -40 to +85°C
! Package: SOT23-3
3 Applications
The devices are ideal for computers, intelligent instru-
ments, controllers, critical microprocessor and micro-
controller, power monitoring and portable/battery-
powered equipment.
Figure 1. Functional Block Diagrams
VCC
3
VDD
VCC
AS1901
AS1902
RESETN, 2
RESET
GND
1
Microprocessor
RESET
GND
VCC
3
VDD
AS1903
2
RESETN
GND
1
VCC
Microprocessor
RESET I/O
GND
www.austriamicrosystems.com
Revision 1.51
1-9
1 page  
AS1901, AS1902, AS1903
Data Sheet - Typical Operating Characteristics
www.DataSheet4U.com
7 Typical Operating Characteristics
Figure 3. Supply Current vs. Temperature
0.5
0.4
0.3
0.2
0.1
0
-40 -15 10 35 60
Tem perature(°C)
85
Figure 4. Power Down Reset Delay vs. Temp.
200
VOD = 10mV
175
150
125
100
75
50
25
0
-40 -15 10 35 60
Tem perature(°C)
85
Figure 5. Power-Up Reset Timeout vs. Temperature
200
175
150
125
100
75
50
25
0
-40 -15 10 35 60
Tem perature(°C)
85
Figure 6. Max. Trans. Duration vs. Reset Th. Overdrive
200
175
150
125
100
75
50
25
0
1 10 100 1000
Reset Th. Overdrive VTH-VCC (mV)
www.austriamicrosystems.com
Revision 1.51
5-9
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet AS1902.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AS190-73 | PHEMT GaAs IC High Linearity 3 V Control SPDT Switch 0.1-2 GHz |  Alpha Industries |
| AS1901 | Ultra Low-Power uP Supervisory Circuit | austriamicrosystems AG |
| AS1902 | Ultra Low-Power uP Supervisory Circuit | austriamicrosystems AG |
| AS1903 | Ultra Low-Power uP Supervisory Circuit | austriamicrosystems AG |
| 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 |