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PT7M6537CLTA5E

Description
Voltage Detector with Adjustable Delay Time
File Size465KB,8 Pages
ManufacturerPericom Semiconductor Corporation (Diodes Incorporated)
Websitehttps://www.diodes.com/
Download Datasheet View All

PT7M6537CLTA5E Overview

Voltage Detector with Adjustable Delay Time

PT7M6518-6550(CL/CH /NL)
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Voltage Detector with Adjustable Delay Time
Features
Operate from VCC of 1.2V to 5.5V
Capacitor-Adjustable Delay
Active-High/-Low Output Options
Open-Drain /Push-Pull Output Options
Detect Voltage Threshold Accurate: 2.5% in full
Temperature from -40° to +85°
C
C
Low Supply Current (2µ Typ.)
A,
Ultra-Small 4-Pin UDFN Package or SOT23-5
Package or SC70-4 package
Description
The PT7M6518-6550 is a family of small, low-power,
voltage-monitoring circuits with adjustable delay time
capability. PT7M65xx series features a highly accurate
under voltage detector with hysteresis and an
externally programmable time delay generator. This
combination of features prevents erratic system reset
operation.
PT7M65xx series provide external capacitor to adjust
for set up delay time.
All series operate from a 1.2V to 5.5V supply voltage
and are fully specified over the -40° to +85°
C
C
operating temperature range. This family is available
in ultra-small 4-pin UDFN (1.6mm x 1.6mm) and
SC70-4 and SOT23-5 packages.
Applications
Computers/Servers/Networking
Medical Equipment
Critical µ Monitoring
P
Intelligent Instruments
Set-Top Boxes/Portable Equipment
Pin Configuration
Pin Description
Name
RST
RST
GND
V
CC
Cd
Type
O
O
P
P
I/O
Description
Active Low Reset Output:
RST is asserted to LOW when V
CC
drops below voltage threshold V
TH-
value (PT7M65xxCL/NL). PT7M65xxCL output with push-pull. PT7M65xxNLoutput with open-
drain which requires external pullup resistance.
Active High Reset Output.
RST is asserted High when V
CC
drops below voltage threshold V
TH-
voltage (PT7M65xxCH). PT7M65xxCH output with push-pull.
Ground.
Supply Voltage.
Operation voltage from 1.2V to 5.5V. By pass 0.1uF ceramic capacitor to GND for
noise decoupling.
Capacitor Delay.
Adjustable. Connect an external capacitor from Cd pin to GND to set the Reset
inactive delay time (timeout period) after VCC rise over voltage threshold V
TH+
. Do not short Cd pin
to GND directly. The delay time equation as t
delay
=Cd(µ 4×
6
µ +40µ
F)× 10 s
s.
2016-01-0031
1
PT0450-1
03/14/16
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