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參數(shù)資料
| 型號： | RT9808-50CX |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | MICRO POWER VOLTAGE DETECTORS |
| 中文描述： | 微功耗電壓檢測器 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 200K |
| 代理商： | RT9808-50CX |
Preliminary
RT9808
DS9808-01 January 2002
www.richtek-ic.com.tw
1
Micro-Power Voltage Detectors
General Description
The RT9808 is a micro-power voltage detector
supervising the power supply voltage level for
microprocessors (
μ
P) 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 3
μ
A.
The RT9808 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.
Once VDD recovered up-crossing the threshold level,
the reset signal will be released if VDD is above
threshold and last for the whole period of reset active
time out.
RT9808 is n-channel, open-drain output.
Applications
z
Computers
z
Controllers
z
Intelligent Instruments
z
Critical
μ
P and
μ
C Power Monitoring
z
Portable/Battery-Powered Equipment
Ordering Information
RT9808-
Features
z
Internally Fixed Threshold 1.5V to 5V in 0.1V Step
z
±
2% Accuracy
z
Low Supply Current 3
μ
A
z
Quick Reset within 20
μ
S
z
Built-in Recovery Delay 200mS
z
Low Functional Supply Voltage 0.9V
z
N-Channel Open Drain Output
z
Small 3-Pin SOT-23/SOT89 and 5-Pin SOT-25
Packages
Pin Configurations
Part Number
Pin Configurations
RT9808-
CV
(Plastic SOT-23)
TOP VIEW
1. RESET
2. GND
3. VDD
RT9808-
CX
(Plastic SOT-89)
TOP VIEW
1. RESET
2. VDD
3. GND
RT9808-
CB
(Plastic SOT-25)
TOP VIEW
1. RESET
2. VDD
3. GND
4. NC
5. NC
Typical Application Circuit
Operating temperature range
C: Commercial standard
Package Type
V : SOT-23
X : SOT-89
B : SOT-25
Reset Threshold
15 : 1.5V
16 : 1.6V
:
49 : 4.9V
50 : 5.0V
1
3
2
1
2
3
5
4
3
2
1
VDD
μ
P
RESET
RT9808
GND
VDD
RESET
Pull
Up
100K
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| RT9809 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MICRO POWER VOLTAGE DETECTORS |
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| RT9809-43CV | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MICRO POWER VOLTAGE DETECTORS |
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