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MAX6380_R33-T

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

Maxim Integrated 

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

Voltage Detectors

____________ Applications Information

Interfacing to Different

Logic Voltage Components

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

drain output. This output structure sinks current when

OUT is asserted. Connect a pullup 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 VCC Transients

These devices are relatively immune to short-duration,

negative-going VCC 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 VCC 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.

VIN

DC/DC

VOUT

CONVERTER

REGULATED

3.0V

VCC

3.6V

Li+

µP

VCC

OUT

MAX6377

SUSPEND

(OPEN-DRAIN)

Figure 1. Interfacing to Different Logic Voltage Components

Table 1. Factory-Trimmed Reset Thresholds‡

PART

MAX6375_R

MAX6376_R

MAX6377_R

SUFFIX

22

23

24

25

26

27

28

29

30

31

MIN

2.167

2.285

2.364

2.462

2.591

2.660

2.758

2.886

2.955

3.034

RESET THRESHOLD VOLTAGE, VTH (V)

TA = +25°C

TYP

MAX

TA = -40°C TO +85°C

MIN

MAX

2.200

2.233

2.145

2.250

2.320

2.355

2.262

2.375

2.400

2.436

2.340

2.460

2.500

2.537

2.437

2.562

2.630

2.669

2.564

2.696

2.700

2.741

2.633

2.768

2.800

2.842

2.730

2.870

2.930

2.974

2.857

3.000

3.000

3.045

2.925

3.075

3.080

3.126

3.003

3.150

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

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