RT9816_11 Datasheet, PDF (1/10 Pages) Richtek Technology Corporation – Micro-Power Voltage Detectors with Manual Reset

RT9816
Micro-Power Voltage Detectors with Manual Reset
General Description
Features
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_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
z Internally Fixed Threshold 1.0V to 5V in 0.1V Step
z High Accuracy ±1.5%
z Low Supply Current 3μA
z No External Components Required
z Quick Reset within 20μs
z Built-in Recovery Delay Include 0ms, 55ms, 220ms,
450ms Options
z 800ns Glitch Immunity of Manual Reset Input
z Low Functional Supply Voltage 0.9V
z N-Channel Open-Drain Output
z Small SC-82 Package
z RoHS Compliant and 100% Lead (Pb)-Free
low manually, just pull the manual reset input (MR) below
the specified V_IL level. RT9816 is provided in SC-82
package.
Applications
z Computers
Ordering Information
RT9816 ^-
z Controllers
z Intelligent Instruments
z Critical μP and μC Power Monitoring
Note :
Package Type
z Portable/Battery-Powered Equipment
Y : SC-82
Lead Plating System
Marking Information
P : Pb Free
G : Green (Halogen Free and Pb Free) ^{For marking information, contact our sales representative}
Threshold Voltage
directly or through a RichTek distributor located in your
12 : 1.2V
area, otherwise visit our website for detail.
13 : 1.3V
:
49 : 4.9V
Pin Configurations
50 : 5.0V
(TOP VIEW)
Reset Active Timeout Period
A = 0ms (RESET)
VDD MR
B = 55ms (RESET)
4
3
C = 220ms (RESET)
D = 450ms (RESET)
E = 0ms (RESET)
F = 55ms (RESET)
2
GND RESET/
RESET
G = 220ms (RESET)
H = 450ms (RESET)
SC-82
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.
DS9816-05 April 2011
www.richtek.com
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