RT9833
®
DS9833-00 May 2013 www.richtek.com
1
Copyright 2013 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
©
Features
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Internally Fixed Threshold 1V to 5V in 0.1V Step
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z High Accuracy
±±
±±
±1.5%
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z Low Supply Current 3
μμ
μμ
μA
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z No External Components Required
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z Quick Reset within 20
μμ
μμ
μs
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z Built-in Recovery Delay : 0ms, 55ms, 220ms, 450ms
Options
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z 800ns Glitch Immunity of Manual Reset Input
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z Low Functional Supply Voltage 0.9V
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z N-Channel Open-Drain Output
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z Small SC-82 Package
z RoHS Compliant and Halogen Free
Applications
z Computers
z Controllers
z Intelligent Instruments
z Critical μP and μC Power Monitoring
z Portable/Battery-Powered Equipment
Micro-Power Voltage Detectors with Manual Reset
General Description
The RT9833 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 1V to 5V, which covers most digital
applications. It features low supply current of 3μA. The
RT9833 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. The RT9833 is available in the SC-82 package.
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Simplified Application Circuit
RT9833
VDD
RESET
/
RESET
VDD
µp
RESET
/
RESET
GND
MR
Ordering Information
Note :
Richtek products are :
` 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.
RT9833
Package Type
Y : SC-82
Lead Plating System
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)
