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RT9818E-49PYR

Description
IC VOLT DETECTOR 1.2V SOT23-3
Categorysemiconductor    Analog mixed-signal IC   
File Size191KB,14 Pages
ManufacturerRichtek Technology Corporation
Websitehttps://www.richtek.com/
Download Datasheet View All

RT9818E-49PYR Overview

IC VOLT DETECTOR 1.2V SOT23-3

®
RT9818
Micro-Power Voltage Detectors
General Description
The RT9818 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 1.2V to 5V, which
covers most digital applications. It features low supply
current of 3μA. The RT9818 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. RT9818 is
provided in SC-82, SC-70-3, SOT-23-3, SOT-23-5 and
SOT-89 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
Low Functional Supply Voltage 0.9V
N-Channel Open-Drain Output
Small SC-82, SC-70-3, SOT-23-3, SOT-23-5, SOT-89
Packages
RoHS Compliant and 100% Lead (Pb)-Free
Applications
Ordering Information
RT9818
-
Package Type
U3 : SC-70-3
V : SOT-23-3
VL : SOT-23-3 (L-Type)
B : SOT-23-5
X : SOT-89
Y : SC-82
YR : SC-82 (R-Type)
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
Threshold Voltage
12 : 1.2V
13 : 1.3V
:
49 : 4.9V
50 : 5.0V
Reset Active Timeout Period
A = 0ms
(RESET)
B = 55ms
(RESET)
C = 220ms
(RESET)
D = 450ms
(RESET)
E = 0ms
(RESET)
F = 55ms
(RESET)
G = 220ms
(RESET)
H = 450ms
(RESET)
Computers
Controllers
Intelligent Instruments
Critical
μP
and
μC
Power Monitoring
Portable/Battery-Powered Equipment
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Typical Application Circuit
100k
Pull Up
VDD
P
RESET/
RESET
RT9818
GND
VDD
RESET/
RESET
Note :
½
Richtek products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
½
Suitable for use in SnPb or Pb-free soldering processes.
is a registered trademark of Richtek Technology Corporation.
Copyright
©
2016 Richtek Technology Corporation. All rights reserved.
DS9818-11 August 2016
www.richtek.com
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