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RT9817D-30GH

Description
IC VOLT DETECTOR 3.0V SOT143
Categorysemiconductor    Power management   
File Size131KB,11 Pages
ManufacturerRichtek Technology Corporation
Websitehttps://www.richtek.com/
Environmental Compliance
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RT9817D-30GH Overview

IC VOLT DETECTOR 3.0V SOT143

RT9817D-30GH Parametric

Parameter NameAttribute value
typeSimple reset/power-on reset
Monitored voltage number1
outputpush-pull, totem pole
resetLow effective
reset timeoutMinimum is 292 ms
Voltage - Threshold3V
Operating temperature-40°C ~ 85°C(TA)
Installation typesurface mount
Package/casingTO-253-4,TO-253AA
Supplier device packagingSOT-143
RT9817
Micro-Power Voltage Detectors with Manual Reset
General Description
The RT9817 is a micro-power voltage detector with
deglitched manual reset input 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 1.2V to 5V, which covers most
digital applications. It features low supply current of 3μA.
The RT9817 performs supervisory function by sending
out a reset signal whenever the V
DD
voltage falls below a
preset threshold level. This reset signal will last the whole
period before V
DD
recovering. Once V
DD
recovered
upcrossing the threshold level, the reset signal will be
released after a certain delay time. To pull reset signal
low manually, just pull the manual reset input (MR) below
the specified V
IL
level. RT9817 is provided
in SC-82 and
SOT-143 packages.
Features
Internally Fixed Threshold 1.2V to 5V in 0.1V Step
High Accuracy
±
1.5%
Low Supply Current 3μA
μ
No External Components Required
Quick Reset within 20μs
μ
Built-in Recovery Delay Include 0ms, 55ms, 220ms,
450ms Options
800ns Glitch Immunity of Manual Reset Input
Low Functional Supply Voltage 0.9V
CMOS Push-Pull Output
Small SC-82 and SOT-143 Packages
RoHS Compliant and 100% Lead (Pb)-Free
Applications
Computers
Controllers
Intelligent Instruments
Critical
μP
and
μC
Power Monitoring
Portable/Battery-Powered Equipment
Ordering Information
RT9817
-
Package Type
H : SOT-143
Y : SC-82
Pin Configurations
Note :
Richtek products
are :
Lead Plating System
P : Pb Free
(TOP VIEW)
G : Green (Halogen Free and Pb Free)
Threshold Voltage
VDD
MR
VDD
MR
12 : 1.2V
4
3
4
3
13 : 1.3V
:
2
2
49 : 4.9V
GND RESET/
GND
RESET/
50 : 5.0V
RESET
RESET
Reset Active Timeout Period
SOT-143
SC-82
A = 0ms (RESET)
B = 55ms (RESET)
C = 220ms (RESET)
Marking Information
D = 450ms (RESET)
For marking information, contact our sales representative
E = 0ms (RESET)
F = 55ms (RESET)
directly or through a RichTek distributor located in your
G = 220ms (RESET)
area, otherwise visit our website for detail.
H = 450ms (RESET)
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
DS9817-09 April 2011
www.richtek.com
1

RT9817D-30GH Related Products

RT9817D-30GH RT9817C-30GH
Description IC VOLT DETECTOR 3.0V SOT143 IC VOLT DETECTOR 3.0V SOT143
type Simple reset/power-on reset Simple reset/power-on reset
Monitored voltage number 1 1
output push-pull, totem pole push-pull, totem pole
reset Low effective Low effective
reset timeout Minimum is 292 ms Minimum 143 ms
Voltage - Threshold 3V 3V
Operating temperature -40°C ~ 85°C(TA) -40°C ~ 85°C(TA)
Installation type surface mount surface mount
Package/casing TO-253-4,TO-253AA TO-253-4,TO-253AA
Supplier device packaging SOT-143 SOT-143
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