MAX6376XR29 - Maxim Integrated Products, Inc.

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General Description

The MAX6375–MAX6380 are ultra-low-power circuits

used for monitoring battery, power-supply, and regulat-

ed system voltages. Each detector contains a precision

bandgap reference, comparator, and internally trimmed

resistors that set specified trip threshold voltages.

These devices provide excellent circuit reliability and

low cost by eliminating external components and

adjustments when monitoring nominal system voltages

from 2.5V to 5V.

These circuits perform a single function: they assert an

output signal whenever the VCC supply voltage falls

below a preset threshold. The devices are differentiated

by their output logic configurations and preset thresh-

old voltages. The MAX6375/MAX6378 (push-pull) and

MAX6377/MAX6380 (open-drain) have an active-low

output (OUT is logic low when VCC is below VTH). The

MAX6376/MAX6379 have an active-high push-pull out-

put (OUT is logic high when VCC is below VTH). All

parts are guaranteed to be in the correct output logic

state for VCC down to 1V. The detector is designed to

ignore fast transients on VCC. The MAX6375/MAX6376/

MAX6377 have voltage thresholds between 2.20V and

3.08V in approximately 100mV increments. The

MAX6378/MAX6379/MAX6380 have voltage thresholds

between 3.30V and 4.63V in approximately 100mV

increments.

Ultra-low supply current of 500nA (MAX6375/MAX6376/

MAX6377) makes these parts ideal for use in portable

equipment. All six devices are available in space-saving

SC70 packages.

Applications

Precision Battery Monitoring

Load Switching/Power Sequencing

Power-Supply Monitoring in Digital/Analog Systems

Portable/Battery-Powered Equipment

Features

♦Ultra-Low 500nA Supply Current

(MAX6375/MAX6376/MAX6377)

♦Thresholds Available from 2.20V to 4.63V in

Approximately 100mV Increments

♦±2.5% Threshold Accuracy Over Temperature

♦Low Cost

♦Available in Three Versions: Push-Pull OUT,

Push-Pull OUT, and Open-Drain OUT

♦Power-Supply Transient Immunity

♦No External Components

♦3-Pin SC70 Package

MAX6375–MAX6380

3-Pin, Ultra-Low-Power SC70

Voltage Detectors

________________________________________________________________ Maxim Integrated Products 1

3VCC

OUT (OUT)

GND

( ) ARE FOR MAX6376/MAX6379 ONLY.

MAX6375

MAX6376

MAX6377

MAX6378

MAX6379

MAX6380

SC70-3

TOP VIEW

Pin Configuration

19-1721; Rev 1; 7/00

†The MAX6375/MAX6376/MAX6377 are available in factory-pre-

set thresholds from 2.20V to 3.08V, in approximately 0.1V incre-

ments. The MAX6378/MAX6379/MAX6380 are available in

factory-preset thresholds from 3.30V to 4.63V, in approximately

0.1V increments. Choose the desired threshold suffix from

Table 1 and insert it in the blank spaces following R. There are

21 standard versions, with a required order increment of 2500

pieces. Sample stock is generally held on the standard versions

only (see the Selector Guide). The required order increment is

10,000 pieces for nonstandard versions (Table 2). Contact facto-

ry for availability. All devices available in tape-and-reel only.

Ordering Information

3 SC70-3

3 SC70-3-40°C to +85°C

-40°C to +85°C

MAX6380XR_ _-T

MAX6379XR_ _-T

MAX6378XR_ _-T

3 SC70-3

PIN-PACKAGETEMP. RANGE

-40°C to +85°C

MAX6377XR_ _-T

MAX6376XR_ _-T

MAX6375XR_ _-T

PART†

Selector Guide appears at end of data sheet.

MAX6375–MAX6380

3-Pin, Ultra-Low-Power SC70

Voltage Detectors

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC = full range, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C and VCC = 3V.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

Terminal Voltage (with respect to GND)

VCC ...........................................................................-0.3V to +6V

OUT, OUT (push-pull) ................................-0.3V to (VCC + 0.3V)

OUT (open-drain) .....................................................-0.3V to +6V

Input Current (VCC).............................................................20mA

Output Current (OUT, OUT) ................................................20mA

Continuous Power Dissipation (TA= +70°C)

3-Pin SC70 (derate 2.17mW/°C above +70°C)...........174mW

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Junction Temperature......................................................+150°C

Lead Temperature (soldering, 10s) .................................+300°C

Note 1: Production tested at +25°C only. Overtemperature limits are guaranteed by design, not production tested.

42VCC = (VTH - 100mV) to (VTH + 100mV)

ISINK = 100µA, VCC ≥1.2V, OUT asserted 0.4

VOL

OUT Output Voltage

(MAX6375/MAX6377/

MAX6378/MAX6380)

ISINK = 1.6mA, VCC > 2.1V, OUT asserted 0.3

MAX6375/76/77 only, VCC = 3.0V for VTH ≤2.93V,

VCC = 3.2V for VTH > 2.93V, no load

ISOURCE = 500µA, VCC = 3.2V, MAX6375 only

VOH ISOURCE = 800µA, VCC = 4.5V, VTH ≤4.38V

OUT Output Voltage

(MAX6375/MAX6377) ISOURCE = 800µA, VCC = VTH(MAX), VTH ≥4.5V

TA= -40°C to +85°C

TA= 0°C to +70°C

CONDITIONS

ppm/°C40∆VTH/°CVoltage Threshold Tempco

VVCC Operating Range

UNITSMIN TYP MAXSYMBOLPARAMETER

VCC = (VTH + 100mV) to (VTH - 100mV) µs

Propagation Delay

MAX6375/MAX6376/MAX6377 6.3

MAX6378/MAX6379/MAX6380 9.5 mV

Voltage Threshold

Hysteresis

0.1 µA

Open-Drain OUT Output

Leakage Current

0.8 ✕VCC

1.0 5.5

1.2 5.5

TA= -40°C to +85°C

TA= +25°C

Table 1

VTH -2.5% VTH VTH +2.5%

VTH V

VTH -1.5% VTH VTH +1.5%

Voltage Threshold

VCC = 5.5V, no load

ICC

Supply Current 0.5 1.0 µA

1.0 1.75

ISOURCE = 500µA, VCC ≥2.1V, OUT asserted 0.8 ✕VCC

0.8 ✕VCC

ISINK = 1.2mA, VCC ≥3.2V, OUT not asserted,

MAX6376 only 0.3

ISOURCE = 50µA, VCC ≥1.2V, OUT asserted

VOH

ISINK = 3.2mA, VCC ≥4.5V, OUT not asserted,

VTH ≤4.38V 0.4

ISINK = 3.2mA, VCC = VTH(MAX), VTH ≥4.5V 0.4

VOL

OUT Output Voltage

(MAX6376/MAX6379)

MAX6375–MAX6380

3-Pin, Ultra-Low-Power SC70

Voltage Detectors

______________________________________________________________________________________ 3

__________________________________________Typical Operating Characteristics

(VCC = 5, TA= +25°C, unless otherwise noted.)

0.3

0.2

0.1

0.4

0.5

0.6

0.7

0.8

0.9

1.0

-40 0-20 20 40 60 80

SUPPLY CURRENT vs. TEMPERATURE

MAX6375-01

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

VCC = 3.3V

VCC = 5V

VCC = 1.2V

100

150

200

-40 0-20 20406080

PROPAGATION DELAY (FALLING)

vs. TEMPERATURE

MAX6375-02

TEMPERATURE (°C)

PROPAGATION DELAY (µs)

VOD = 200mV

VOD = 10mV

VOD = 100mV

VOD = 20mV

120

100

140

-40 0 20-20 40 60 80

PROPAGATION DELAY (RISING)

vs. TEMPERATURE

MAX6375-03

TEMPERATURE (°C)

PROPAGATION DELAY (µs)

VOD = 10mV

VOD = 20mV

VOD = 100mV

VOD = 200mV

500

1 100 1000

MAXIMUM TRANSIENT DURATION

vs. THRESHOLD OVERDRIVE

100

300

400

200

MAX6375-04

THRESHOLD OVERDRIVE

VTH - VCC (mV)

MAXIMUM TRANSIENT DURATION (µs)

OUT/OUT IS ASSERTED

ABOVE LINE

Pin Description

MAX6375/MAX6378

MAX6377/MAX6380

MAX6376

MAX6379

VCC

OUT

GND

NAME

Supply Voltage33

Active-High Output. OUT remains high while VCC is below the threshold.2—

Active-Low Output. OUT remains low while VCC is below the threshold. OUT is

open-drain on the MAX6377/MAX6380 and push-pull on the MAX6375/MAX6378.

—2

Ground11

FUNCTION

MAX6375–MAX6380

3-Pin, Ultra-Low-Power SC70

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 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.

Figure 1. Interfacing to Different Logic Voltage Components

Table 1. Factory-Trimmed Voltage Thresholds‡

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

OUT SUSPEND

µP

VIN

VCC

VOUT

3.6V

Li+

REGULATED

3.0V

VCC

DC/DC

CONVERTER

(OPEN-DRAIN)

MAX6377

THRESHOLD VOLTAGE, VTH (V)

TA = +25°CT

A = -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

MAX6375XR

MAX6376XR

MAX6377XR

31 3.034 3.080 3.126 3.003 3.150

3-Pin, Ultra-Low-Power SC70

Voltage Detectors

_______________________________________________________________________________________ 5

Table 1. Factory-Trimmed Voltage Thresholds‡(continued)

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

Table 2. Device Marking Codes and Minimum Order Increments

THRESHOLD VOLTAGE, VTH (V)

TA = +25°CT

A = -40°C TO +85°C

PART SUFFIX

MIN TYP MAX MIN MAX

33 3.250 3.300 3.350 3.217 3.383

34 3.349 3.400 3.451 3.315 3.485

35 3.447 3.500 3.552 3.412 3.587

36 3.546 3.600 3.654 3.510 3.690

37 3.644 3.700 3.755 3.607 3.792

38 3.743 3.800 3.857 3.705 3.895

39 3.841 3.900 3.958 3.802 3.997

40 3.940 4.000 4.060 3.900 4.100

41 4.038 4.100 4.161 3.997 4.202

42 4.137 4.200 4.263 4.095 4.305

43 4.235 4.300 4.364 4.192 4.407

44 4.314 4.380 4.446 4.270 4.489

45 4.432 4.500 4.567 4.387 4.612

MAX6378XR

MAX6379XR

MAX6380XR

46 4.560 4.630 4.699 4.514 4.746

PART TOP MARK

(SC70)

ORDER

INCREMENT (k)

MAX6375XR22-T ADH 2.5

MAX6375XR23-T ADI 2.5

MAX6375XR24-T — 10

MAX6375XR25-T — 10

MAX6375XR26-T ACZ 2.5

MAX6375XR27-T — 10

MAX6375XR28-T — 10

MAX6375XR29-T ADJ 2.5

MAX6375XR30-T — 10

MAX6375XR31-T ADK 2.5

MAX6376XR22-T ADL 2.5

MAX6376XR23-T ADM 2.5

MAX6376XR24-T — 10

MAX6376XR25-T — 10

MAX6376XR26-T ADN 2.5

MAX6376XR27-T — 10

PART TOP MARK

(SC70)

ORDER

INCREMENT (k)

MAX6376XR28-T — 10

MAX6376XR29-T ADA 2.5

MAX6376XR30-T — 10

MAX6376XR31-T ADO 2.5

MAX6377XR22-T ADP 2.5

MAX6377XR23-T ADB 2.5

MAX6377XR24-T — 10

MAX6377XR25-T — 10

MAX6377XR26-T ADQ 2.5

MAX6377XR27-T — 10

MAX6377XR28-T — 10

MAX6377XR29-T ADC 2.5

MAX6377XR30-T — 10

MAX6377XR31-T ADR 2.5

MAX6378XR33-T —10

MAX6378XR34-T — 10

MAX6375–MAX6380

3-Pin, Ultra-Low-Power SC70

Voltage Detectors

6 _______________________________________________________________________________________

___________________Chip Information

TRANSISTOR COUNT: 419

Table 2. Device Marking Codes and Minimum Order Increments (continued)

Selector Guide

(Standard Versions*)

*Sample stock is generally held on all standard versions.

Contact factory for availability of nonstandard versions.

PART TOP MARK

(SC70)

ORDER

INCREMENT (k)

MAX6378XR35-T — 10

MAX6378XR36-T — 10

MAX6378XR37-T — 10

MAX6378XR38-T — 10

MAX6378XR39-T — 10

MAX6378XR40-T — 10

MAX6378XR41-T — 10

MAX6378XR42-T — 10

MAX6378XR43-T — 10

MAX6378XR44-T ADS 2.5

MAX6378XR45-T — 10

MAX6378XR46-T ADD 2.5

MAX6379XR33-T —10

MAX6379XR34-T — 10

MAX6379XR35-T — 10

MAX6379XR36-T — 10

MAX6379XR37-T — 10

MAX6379XR38-T — 10

MAX6379XR39-T — 10

MAX6379XR40-T — 10

PART TOP MARK

(SC70)

ORDER

INCREMENT (k)

MAX6379XR41-T — 10

MAX6379XR42-T — 10

MAX6379XR43-T — 10

MAX6379XR44-T ADE 2.5

MAX6379XR45-T — 10

MAX6379XR46-T ADT 2.5

MAX6380XR33-T —10

MAX6380XR34-T — 10

MAX6380XR35-T — 10

MAX6380XR36-T — 10

MAX6380XR37-T — 10

MAX6380XR38-T — 10

MAX6380XR39-T — 10

MAX6380XR40-T — 10

MAX6380XR41-T — 10

MAX6380XR42-T — 10

MAX6380XR43-T — 10

MAX6380XR44-T ADU 2.5

MAX6380XR45-T — 10

MAX6380XR46-T ADF 2.5

PART NOMINAL VTH (V)

MAX63__XR46-T 4.63

MAX63__XR44-T 4.38

MAX63__XR31-T 3.08

MAX63__XR29-T 2.93

MAX63__XR26-T 2.63

MAX63__XR23-T 2.32

MAX63__XR22-T 2.20

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are

implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

7_____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

________________________________________________________Package Information

SC70, 3L.EPS