®
RT9807
Micro-Power Voltage Detector with Manual Reset
General Description
Features
Monitor System Voltages from 0.9V to 5.5V
Capacitor-Adjustable Reset Timeout Period
Manual Reset Input
The RT9807 is a micro-power voltage detector with
deglitched manual reset input which supervises the power
supply voltage level for microprocessors (μP) or digital
systems. It provides internally fixed threshold levels
ranging from 1.2V to 3.3V with 0.1V per step, which covers
most digital applications. It features low supply current of
3μA.
Low Quiescent Current
High Accuracy 1.5%
Low Functional Supply Voltage 0.9V
N-Channel Open-Drain Output
Small SOT-23-5 Package
The RT9807 performs supervisory function by sending out
a reset signal whenever the VDD voltage falls below a
preset threshold level. The timeout period of this reset
signal can be adjusted via an external capacitor. Once
VDD recovers above the threshold level, the reset signal
will be released after a certain delay time. To manually
pull reset signal low, just pull the manual reset input (MR)
below the specified logic-low level.
RoHS Compliant and Halogen Free
Applications
Computers
Controllers
Intelligent Instruments
Critical uP and uC Power Monitoring
Portable/Battery-Powered Equipment
The RT9807 is available in an SOT-23-5 package.
Pin Configurations
Ordering Information
(TOP VIEW)
RT9807-
VDD
CT
Package Type
B : SOT-23-5
5
4
Lead Plating System
2
3
G : Green (Halogen Free and Pb Free)
RST GND MR
SOT-23-5
Output Voltage
12 : 1.2V
13 : 1.3V
:
32 : 3.2V
33 : 3.3V
Typical Application Circuit
R
470k
Note :
RT9807
Richtek products are :
5
1
4
VDD
Reset
RST
V
DD
C
IN
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
1uF
3
Suitable for use in SnPb or Pb-free soldering processes.
CT
MR
GND
2
C
CT
10nF
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Copyright 2015 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DS9807-02 December 2015
www.richtek.com
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