RT9816 RICHTEK [Richtek Technology Corporation], RT9816 Datasheet

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RT9816

Manufacturer Part Number
RT9816
Description
Micro-Power Voltage Detectors with Manual Reset
Manufacturer
RICHTEK [Richtek Technology Corporation]
Datasheet
Micro-Power Voltage Detectors with Manual Reset
General Description
The RT9816 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 1.0V to 5V, which covers most
digital applications. It features low supply current of 3μA.
The RT9816 performs supervisory function by sending
out a reset signal whenever the V
preset threshold level. This reset signal will last the whole
period before V
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
package.
Ordering Information
Note :
RichTek
DS9816-03 March 2007
RT9816
RoHS compliant and compatible with the current require-
Suitable for use in SnPb or Pb-free soldering processes.
100%matte tin (Sn) plating.
ments of IPC/JEDEC J-STD-020.
Pb-free and Green products
-
IL
DD
level. RT9816 is provided in
Package Type
Y : SC-82
Operating Temperature Range
C : Commercial Standard
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
Threshold Voltage
12 : 1.2V
13 : 1.3V
49 : 4.9V
50 : 5.0V
Reset Active Timeout Period
A = 0ms
B = 55ms
C = 220ms
D = 450ms
E = 0ms
F = 55ms
G = 220ms
H = 450ms
recovering. Once V
:
cial Standard)
(RESET)
(RESET)
(RESET)
(RESET)
(RESET)
(RESET)
(RESET)
(RESET)
DD
are :
voltage falls below a
DD
recovered
SC-82
Features
Applications
Marking Information
For marking information, contact our sales representative
directly or through a RichTek distributor located in your
area, otherwise visit our website for detail.
Pin Configurations
Note : There is no pin1 indicator on top mark for SC-82 type,
and pin 1 will be lower left pin when reading top mark from
left to right. Pin2 of SC-82 is wider than other pins.
Internally Fixed Threshold 1.0V to 5V in 0.1V Step
High Accuracy ± ± ± ± ± 1.5%
Low Supply Current 3μ μ μ μ μ A
No External Components Required
Quick Reset within 20μ μ μ μ μ s
Built-in Recovery Delay Include 0ms, 55ms, 220ms,
450ms Options
800ns Glitch Immunity of Manual Reset Input
Low Functional Supply Voltage 0.9V
N-Channel Open-Drain Output,
Small SC-82 Package
RoHS Compliant and 100% Lead (Pb)-Free
Computers
Controllers
Intelligent Instruments
Critical μP and μC Power Monitoring
Portable/Battery-Powered Equipment
GND
VDD
(TOP VIEW)
4
1
SC-82
RESET/
RESET
MR
2
3
RT9816
www.richtek.com
1

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RT9816 Summary of contents

Page 1

... Micro-Power Voltage Detectors with Manual Reset General Description The RT9816 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 1.0V to 5V, which covers most digital applications. It features low supply current of 3μ ...

Page 2

... GND Ground Pin RESET Active Low Open-Drain Reset Output RESET Active High Open-Drain Reset Output Manual Reset MR VDD Power Pin Function Block Diagram Voltage Setting www.richtek.com 2 100k RT9816 Pull Up VDD GND up RESET/ RESET/ RESET RESET MR VDD Timer CMP VSET Threshold POR ...

Page 3

... V − 65°C to 125°C − 40°C to 125°C − 40°C to 85°C Min Typ 0 27° 1 0.25V 0. 800 −1 143 220 292 450 -- -- -- 0.01V T H RT9816 +0.3V DD Max Units 6 V μ +1.5 % μ 297 ms 608 ms 0 www.richtek.com 3 ...

Page 4

... RT9816 Note 1. Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the device. These are for stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibility to affect device reliability ...

Page 5

... RT9816 Nch Driver Output Current vs RT9816C- 1. 0 (V) DS Output Voltage vs. Input Voltage 7 RT9816 1. Input Volgate (V) Supply Current vs. Input Voltage 4 RT9816C-30 3.5 3 2.5 2 -30°C 1 Input Voltage (V) ...

Page 6

... Temperature Power-Down Reset Delay vs. Temperature 45 RT9816A- 200mV DROP -50 - Temperature Nch Driver Sink Current vs. Input Voltage 40 RT9816C-30 0. 25° 0.5 1 1.5 2 Input Voltage(V) DS9816-03 March 2007 V = 150mV DROP V = 250mV DROP 75 100 125 (° ...

Page 7

... Nch Driver Sink Current vs. Input Voltage 50 RT9816A-45 0. Input Voltage(V) Power-Up Reset Time-Out vs. Temperature 100 RT9816A -50 - Temperature Nch Driver Output Current vs. V 160 RT9816G-31 140 120 100 DS9816-03 March 2007 -30° ...

Page 8

... Power-Down Reset Time-Out vs. Temperature 30 RT9816G- 200mV DROP -50 - Temperature www.richtek.com 100 125 (° 150mV DROP V = 250mV DROP 50 75 100 125 (°C) Output Voltage vs. Input Voltage 7 RT9816G- Input Voltage (V) DS9816-03 March 2007 5 6 ...

Page 9

... Application Information Multiple Supplies Mainly, the pull-up connected to the RT9816 will connect to the supply voltage that is being monitored at the IC’ s VCC pin. However, some systems may use the open-drain output to level-shift from the monitored supply to reset circuitry powered by some other supply. ...

Page 10

... RT9816 Outline Dimension Symbol Richtek Technology Corporation Headquarter 5F, No. 20, Taiyuen Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611 www.richtek.com Dimensions In Millimeters Min Max 0.800 1.100 0.000 0.100 1.150 1.350 0.150 ...

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