Rainbow-electronics MAX6380 Manual de usuario descargar pdf (Pagina 4)

MAX6375–MAX6380

3-Pin, Ultra-Low-Power SC70/SOT23

Voltage Detectors

4 _______________________________________________________________________________________

____________ Applications Information

Interfacing to Different

Logic Voltage Components

The MAX6377/MAX6380 have an active-low, open-

drain output. This output structure will sink current

when OUT is asserted. Connect a pull-up resistor from

OUT to any supply voltage up to 5.50V (Figure 1).

Select a resistor value large enough to allow a valid

logic low (see Electrical Characteristics), and small

enough to register a logic high while supplying all input

current and leakage paths connected to the OUT line.

Negative-Going V

Transients

These devices are relatively immune to short-duration,

negative-going V

transients (glitches). The Typical

Operating Characteristics show the Maximum Transient

Duration vs. Threshold Overdrive graph, for which out-

put pulses are not generated. The graph shows the

maximum pulse width that a negative-going V

tran-

sient may typically have before the devices issue out-

put signals. As the amplitude of the transient increases,

the maximum-allowable pulse width decreases.

Figure 1. Interfacing to Different Logic Voltage Components

Table 1. Factory-Trimmed Reset Thresholds

‡

Factory-trimmed reset thresholds are available in approximately 100mV increments with a 1.5% room-temperature variance.

OUT

SUSPEND

µP

OUT

3.6V

Li+

REGULATED

3.0V

DC/DC

CONVERTER

(OPEN-DRAIN)

MAX6377

RESET THRESHOLD VOLTAGE, V

(V)

= +25°C T

= -40°C TO +85°C

PART SUFFIX

MIN TYP MAX MIN MAX

22 2.167 2.200 2.233 2.145 2.250

23 2.285 2.320 2.355 2.262 2.375

24 2.364 2.400 2.436 2.340 2.460

25 2.462 2.500 2.537 2.437 2.562

26 2.591 2.630 2.669 2.564 2.696

27 2.660 2.700 2.741 2.633 2.768

28 2.758 2.800 2.842 2.730 2.870

29 2.886 2.930 2.974 2.857 3.000

30 2.955 3.000 3.045 2.925 3.075

MAX6375_R

MAX6376_R

MAX6377_R

31 3.034 3.080 3.126 3.003 3.150

1 2 3 4 5 6 7

MAX6375–MAX6380 1
Voltage Detectors 1

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Rainbow-electronics MAX6380 Manual de usuario Pagina 4

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