rt9809 ETC-unknow, rt9809 Datasheet

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rt9809

Manufacturer Part Number
rt9809
Description
Micro Power Voltage Detectors
Manufacturer
ETC-unknow
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
rt9809-30PV
Manufacturer:
RICHTEK/立錡
Quantity:
20 000
General Description
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 2.5µA.
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.
Once VDD recovered up-crossing the threshold level,
the reset signal will be released after a certain delay
time. A 5% hysteresis splits the rising and falling
threshold levels.
RT9809 is provided in SOT-23 package.
Applications
Ordering Information
RT9809-
DS9809-00 June 2001
Computers
Controllers
Intelligent Instruments
Critical µP and µC Power Monitoring
Portable/Battery-Powered Equipment
Operating temperature range
C: Commercial standard
Reset Threshold
15 : 1.5V
16 : 1.6V
49 : 4.9V
50 : 5.0V
Package Type
V : SOT-23
:
Preliminary
Micro-Power Voltage Detectors
Features
Pin Configurations
Typical Application Circuit
RT9809-
(SOT-23)
Part Number
Internally Fixed Threshold 1.5V to 5V in 0.1V
Step
± ± ± ± 2% Accuracy
Low Supply Current 2.5µ µ µ µ A
No External Components Required
Quick Reset within 20µ µ µ µ S
Built-in Recovery Delay 400mS
Low Functional Supply Voltage 0.9V
Small 3-Pin SOT-23 Package
VDD
µ P
RESET
CV
Pin Configurations
GND
RESET
1
RT9809
3
2
www.richtek-ic.com.tw
VDD
RT9809
TOP VIEW
1. GND
2. RESET
3. VDD
1

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rt9809 Summary of contents

Page 1

... General Description 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 2.5µA. The RT9809 performs supervisory function by sending out a reset signal whenever the VDD voltage falls below a preset threshold level ...

Page 2

... RT9809 Pin Description Pin Name Pin Function GND Ground Pin RESET Reset Pulse Output, Negative Pulse VDD Power Pin Function Block Diagram VSET Threshold Voltage Setting www.richtek-ic.com.tw 2 Preliminary VDD VDD CMP TIMER POR Power On Reset P RESET N DS9809-00 June 2001 ...

Page 3

... Drop = -20mV ≥ 1.02× > > 1mA SOURCE V V < > 3.5mA SINK RT9809 -0.3V to 6.0V -0.3V to VDD+0.3V 20mA 20mA 0.25W -40°C ~ 125°C -65°C ~ 125°C 250°C /W 260°C Min Typ Max Units 0 2.5 -- µA -- Note1 -- V ...

Page 4

... RT9809 Package Information C A Symbol www.richtek-ic.com.tw 4 Preliminary Dimensions In Millimeters Min Max 0.889 1.295 -- 0.152 1.397 1.803 0.356 0.508 2.591 2.997 2.692 3.099 1.803 2.007 0.102 0.254 0.356 0.610 SOT-23 Plastic Surface Mount H L Dimensions In Inches ...

Page 5

... DS9809-00 June 2001 Preliminary RT9809 www.richtek-ic.com.tw 5 ...

Page 6

... RT9809 RICHTEK TECHNOLOGY CORP. Headquarter 6F, No. 35, Hsintai Road, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5510047 Fax: (8863)5537749 www.richtek-ic.com.tw 6 Preliminary RICHTEK TECHNOLOGY CORP. Taipei Office (Marketing) 8F-1, No. 137, Lane 235, Paochiao Road, Hsintien City Taipei County, Taiwan, R.O.C. Tel: (8862)89191466 Fax: (8862)89191465 Email: marketing@richtek-ic.com.tw ...

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