TC1270ANLVRCTR datasheet, PDF - EEWORLD Datasheet

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TC1270ANLVRCTR: DescriptionSupervisory Circuits 4Pin uP Reset Mon 4.63V Reset Thresh; CategoryPower/power management The power supply circuit; File Size324KB，15 Pages; ManufacturerMicrochip; Websitehttps://www.microchip.com; Environmental Compliance

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TC1270ANLVRCTR Overview

Supervisory Circuits 4Pin uP Reset Mon 4.63V Reset Thresh

TC1270ANLVRCTR Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Parts packaging code	SOT-143
package instruction	LSOP, TO-253
Contacts	4
Reach Compliance Code	compliant
ECCN code	EAR99
Other features	RESET THRESHOLD VOLTAGE IS 4.63V
Adjustable threshold	NO
Analog Integrated Circuits - Other Types	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code	R-PDSO-G4
JESD-609 code	e4
length	2.9 mm
Humidity sensitivity level	1
Number of channels	1
Number of functions	1
Number of terminals	4
Maximum operating temperature	125 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	LSOP
Encapsulate equivalent code	TO-253
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, LOW PROFILE
Peak Reflow Temperature (Celsius)	260
power supply	5 V
Certification status	Not Qualified
Maximum seat height	1.22 mm
Maximum supply current (Isup)	0.015 mA
Maximum supply voltage (Vsup)	5.5 V
Minimum supply voltage (Vsup)	1 V
Nominal supply voltage (Vsup)	3 V
surface mount	YES
Temperature level	AUTOMOTIVE
Terminal surface	Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal form	GULL WING
Terminal pitch	1.92 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	40
width	1.3 mm
Base Number Matches	1

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Obsolete Device

Recommended Replacements:

TC1270A, TC1270AN, TC1271A

TC1270/TC1271

4-Pin Reset Monitors

Features:

• Precision V

Monitor for 1.8V, 2.7V, 3.0V, 3.3V

and 5.0V Nominal Supplies

• Manual Reset Input

• 140 ms Minimum RESET, Reset Output Duration

• RESET Output Valid to V

= 1.0V (TC1270)

• Low 7 µA Supply Current

• V

Transient Immunity

• Small 4-Pin SOT-143 Package

• No External Components

• Replacement for MAX811/812 and Offers a Lower

Threshold Voltage Option

General Description

The TC1270 and TC1271 are cost-effective system

supervisor circuits designed to monitor V

in digital

systems and provide a reset signal to the host

processor when necessary. A manual reset input is

provided to override the reset monitor, and is suitable

for use as a push button reset. No external components

are required.

The reset output is driven active within 20 µs (4 µs for

F version) of V

falling through the reset voltage

threshold. Reset is maintained active for a minimum of

140 ms after V

rises above the reset threshold. The

TC1271 has an active-high RESET output while the

TC1270 has an active-low RESET output. The output

of the TC1270 is valid down to V

= 1V. Both devices

are available in a 4-Pin SOT-143 package.

The TC1270/TC1271 devices are optimized to reject

fast transient glitches on the V

line. Low supply

current of 7 µA (V

= 3.3V) makes these devices

suitable for battery powered applications.

Applications:

•

Computers

Embedded Systems

Battery Powered Equipment

Critical µP Power Supply Monitoring

Typical Operating Circuit

Processor

Push

Button

RESET

Reset

Input

(Active Low)

GND

Package Type

GND 1

TC1270

TC1271

TC1270

RESET

TC1271

(RESET)

TC1270

GND

2007 Microchip Technology Inc.

DS21381D-page 1

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