TC54VC5302ECB datasheet, PDF - EEWORLD Datasheet

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TC54VC5302ECB: Description1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3, EIAJ, SC-59, SOT-23A, 3 PIN; CategoryPower/power management The power supply circuit; File Size222KB，5 Pages; ManufacturerMicrochip; Websitehttps://www.microchip.com; Environmental Compliance

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TC54VC5302ECB Overview

1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3, EIAJ, SC-59, SOT-23A, 3 PIN

TC54VC5302ECB Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	Microchip
Parts packaging code	SOT-23A
package instruction	EIAJ, SC-59, SOT-23A, 3 PIN
Contacts	3
Reach Compliance Code	compliant
ECCN code	EAR99
Other features	DETECTION THRESHOLD VOLTAGE IS 5.3V
Adjustable threshold	NO
Analog Integrated Circuits - Other Types	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code	R-PDSO-G3
JESD-609 code	e3
length	2.92 mm
Humidity sensitivity level	1
Number of channels	1
Number of functions	1
Number of terminals	3
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	TSSOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	260
Certification status	Not Qualified
Maximum seat height	1.12 mm
Maximum supply voltage (Vsup)	10 V
Minimum supply voltage (Vsup)	0.7 V
Nominal supply voltage (Vsup)	2.1 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	0.95 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	40
width	1.3 mm

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AN2

Using the Microchip TC54 Voltage Detector

INTRODUCTION

Microchip's TC54 series of voltage detectors are designed to

supersede a variety of discrete comparator circuits and bipolar

technology voltage detectors.

These voltage detectors are especially suited for application in

battery powered systems because of their extremely low 1µA

operating current. Each part is laser programmed to the desired trip

point voltage over the range of 1.1V to 6.0V in 100mV steps. For

complete design flexibility, complementary or open-drain output

versions are available. TC54 package options include surface

mount SOT-23A and SOT-89 or through-hole TO-92 types.

OPERATION

The TC54 equivalent circuit is shown in Figure 1. The internal

precision temperature-compensated reference and comparator

circuit consistently monitor V

for an under-voltage condition.

When such a condition occurs, the output is forced to the active

(LOW) state and remains there until V

is once again within

tolerance. As shown in the timing diagram of Figure 1, the output

is forced active when V

< (–V

DET

) (Where (–V

DET

) is the threshold

voltage) and returns HIGH when V

exceeds (–V

DET

) plus 5%

hysteresis (example: if (–V

DET

) = 2.0V, the output will go HIGH

when V

> 2.1V).

TC54VC only

Input Voltage

Hysteresis

Voltage

Release

Voltage

(+V

DET

)

Detect Voltage (–V

DET

)

Minimum Operating Voltage

Ground Level

–

OUT

Output Voltage

REF

Ground Level

FIGURE 1:

TC54 block diagram and timing.

TC54 AS A MICROCONTROLLER

RESET GENERATOR

Reset generators external to the microcontroller are necessary in

systems that have slowly rising power supplies. It is necessary to

hold the microcontroller in its reset state until the power supply has

reached a valid operating level. Commonly used simple Schmitt

trigger/capacitor circuits are inadequate since they do not

accurately monitor the power supply voltage tolerance. The TC54

series overcomes this problem with precise voltage detection.

Figure 2 shows a reset circuit using a TC54 replacing bipolar

integrated voltage detectors (see Table 1).

OUT

100

MCLR

PIC

Microcontroller

TC54VC

FIGURE 2:

Microcontroller reset circuit using TC54.

DS00779A-page 1

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