TL7700CPWR.A datasheet(3/31 Pages) TI2

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SENSE

GND

RESET

NC – No internal connection

RESET

SENSE

GND

TL7700

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SLVS220G – JULY 1999 – REVISED AUGUST 2016

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5 Pin Configuration and Functions

DGK Package

8-Pin VSSOP

Top View

P, PS, or PW Package

8-Pin PDIP, SO, TSSOP

Top View

Pin Functions

I/O

DESCRIPTION

NAME

PDIP,

SO,

TSSOP

VSSOP

I/O

Timing capacitor connection.

This terminal sets the RESET output pulse duration (tpo). It is connected internally to a

15-µA constant-current source. There is a limit on the switching speed of internal

elements; even if CT is set to 0, response speeds remain at approximately 5 to 10 µs.

If CT is open, the device can be used as an adjustable-threshold noninverting

comparator. If CT is low, the internal output-stage comparator is active, and the RESET

output transistor is on. An external voltage must not be applied to this terminal due to the

internal structure of the device. Therefore, drive the device using an open-collector

transistor, FET, or 3-state buffer (in the low-level or high-impedance state).

GND

—

Ground

Keep this terminal as low impedance as possible to reduce circuit noise.

3, 6, 7

2, 6, 7

—

No internal connection

RESET

Reset output

This terminal can be connected directly to a system that resets in the active-low state. A

pullup resistor usually is required because the output is an npn open-collector transistor.

An additional transistor should be connected when the active-high reset or higher output

current is required.

SENSE

Voltage sense

This terminal has a threshold level of 500 mV. The sense voltage and hysteresis can be

set at the same time when the two voltage-dividing resistors are connected. The

reference voltage is temperature compensated to inhibit temperature drift in the threshold

voltage within the operating temperature range.

VCC

—

Power supply

This terminal is used in an operating-voltage range of 1.8 V to 40 V.

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