TC52 datasheet(3/10 Pages) MICROCHIP

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 2002 Microchip Technology Inc.

DS21430B-page 3

TC52

2.0

PIN DESCRIPTIONS

The descriptions of the pins are listed in Table 2-1.

TABLE 2-1:

PIN FUNCTION TABLE

3.0

DETAILED DESCRIPTION

In normal steady-state operation and for either

channel, when VIN > VDET -, the output is high, see

Figure 3-1. (In the case of the TC52N, this is an open-

drain condition.) If and when the input falls below

VDET -, the output pulls down (Logic 0) to VSS.

Generally, VOUT can pull down to within 0.5V of VSS at

rated output current and input voltages. (Also see

Section 1.0, Electrical Characteristics).

The output, VOUT, stays valid until the input voltage falls

below the minimum operating voltage, VINMIN, of 0.7V.

Below this minimum operating voltage, the output is

undefined. During power-up or anytime VIN has fallen

below VINMIN, VOUT will remain undefined until VIN rises

above VINMIN, at which time the output becomes valid.

VOUT is maintained in its active low state while VINMIN <

VIN < VDET+. (VDET+ = VDET - + VHYST). If and when

the input rises above VDET+, the output will assume its

inactive state (open-drain for TC52N).

FIGURE 3-1:

TIMING DIAGRAM

Pin No.

(5-Pin SOT-23A)

Symbol

Description

VOUT1

Detector #1 output.

VIN

Supply voltage input, detect voltage 1.

GND

Ground terminal.

VIN2

Detect voltage 2.

VOUT2

Detector #2 output.

VINx

Detect Voltage VDET–

Minimum Operating

Voltage

VHYST

VDET+

Output Voltage

Release Voltage

or RESET Voltage

Ground Level

VOUTx

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