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PDF RT9809 Data sheet ( Hoja de datos )
| Número de pieza | RT9809 | |
| Descripción | MICRO POWER VOLTAGE DETECTORS | |
| Fabricantes | ETC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RT9809 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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Preliminary
RT9809
Micro-Power Voltage Detectors
General Description
Features
The RT9809 is a micro-power voltage detector supervising
the power supply voltage level for microprocessors (µP) or
digital systems. It provides internally fixed threshold
levels with 0.1V per step ranging from 1.5V to 5V, which
covers most digital applications. It features low supply
current of 3µA.
The RT9809 performs supervisory function by sending out
a reset signal whenever the VDD voltage falls below a
preset threshold level. This reset signal will last the whole
period before VDD recovering. Reset signal will release
after VDD is recovered and lasts for the whole period of
Reset Active Time-out period.
RT9809 is CMOS, active-low output and is provided in
SOT-23 package.
Internally Fixed Threshold 1.5V to 5V in 0.1V Step
± 2% Accuracy
Low Supply Current 3µA
No External Components Required
Quick Reset within 20µs
Built-in Recovery Delay 200ms
Low Functional Supply Voltage 0.9V
Small 3-Pin SOT-23 Package
Applications
Computers
Controllers
Intelligent Instruments
Critical µP and µC Power Monitoring
Portable/Battery-Powered Equipment
Ordering Information
Pin Configurations
RT9809-
(TOP VIEW)
Package Type
V : SOT-23
GND 1
Operating Temperature Range
C : Commercial Standard
3 VDD
P : Pb Free with Commercial Standard
Reset Threshold
RESET 2
15 : 1.5V
SOT-23
16 : 1.6V
:
Typical Application Circuit
49 : 4.9V
50 : 5.0V
VDD GND
Marking Information
VDD
µP
RT9809
For marking information, contact our sales representative
directly or through a RichTek distributor located in your
area, otherwise visit our website for detail.
RESET
RESET
Functional Pin Description
Pin Name Pin Function
GND
Ground Pin
RESET
Reset Pulse Output, Negative Pulse
VDD
Power Pin
DS9809-04 April 2004
www.richtek.com
1
1 page  
Preliminary
RT9809
Output Voltage vs. Input Voltage
7
TA=25(°C)
6 5.0V
5 4.5V
4 3.0
3 2.4V
2.0V
2
1
0
0.0 1.0 2.0 3.0 4.0 5.0 6.0
Input Voltage VIN (V)
Pch Driver Output Current vs. Input Voltage
25
VDS=2.1V
20 1.5V
15
1.0V
10
0.5V
5
TA=25(°C)
RT9809-29CV
0
0123456
Input Voltage (V)
Nch Driver Output Current vs. VDS
12
2.2V
10
2.0V
8
6
4 1.5V
2 TA=25(°C)
RT9809-24CV
0
0 0.5 1 1.5 2 2.5 3
VDS (V)
DS9809-04 April 2004
Output Delay Time vs. Load Capacitance
1000
100
10 4.5V 5V
2.4V
3V
1
0.0001
2V TA=25(°C)
0.001
0.01
Load Capacitance COUT (uF)
0.1
Nch Driver Output Current vs. VDS
7
6 1.7V
5
4 1.5V
3
2
1 TA=25(°C)
RT9809-20CV
0
0 0.5 1 1.5 2 2.5 3
VDS (V)
Nch Driver Output Current vs. VDS
18
2.8V
15
12
9
2.0V
6
3
1.5V
TA=25(°C)
RT9809-20CV
0
0 0.5 1 1.5 2 2.5 3
VDS (V)
www.richtek.com
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet RT9809.PDF ] | |
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