MAX6895AAL MAXIM [Maxim Integrated Products], MAX6895AAL Datasheet

MAX6895AAL

Manufacturer Part Number

MAX6895AAL

Description

Ultra-Small, Adjustable Sequencing/Supervisory Circuits

Manufacturer

MAXIM [Maxim Integrated Products]

Datasheet

1.MAX6895AAL.pdf (15 pages)

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The MAX6895–MAX6899 is a family of small, low-power,

voltage-monitoring circuits with sequencing capability.

These miniature devices offer tremendous flexibility with

an adjustable threshold capable of monitoring down to

0.5V and an external capacitor-adjustable time delay.

These devices are ideal for use in power-supply

sequencing, reset sequencing, and power-switching

applications. Multiple devices can be cascaded for

complex sequencing applications.

A high-impedance input with a 0.5V threshold allows an

external resistive divider to set the monitored threshold.

The output asserts (OUT = high or OUT = low) when

the input voltage rises above the 0.5V threshold and the

enable input is asserted (ENABLE = high or ENABLE =

low). When the voltage at the input falls below 0.5V or

when the enable input is deasserted (ENABLE = low or

ENABLE = high), the output deasserts (OUT = low or

OUT = high). All devices provide a capacitor-program-

mable delay time from when the input rises above 0.5V

to when the output is asserted. The MAX689_A versions

provide the same capacitor-adjustable delay from when

enable is asserted to when the output asserts. The

MAX689_P devices have a 1µs propagation delay from

when enable is asserted to when the output asserts.

The MAX6895A/P offers an active-high enable input

and an active-high push-pull output. The MAX6896A/P

offers an active-low enable input and an active-low

push-pull output. The MAX6897A/P offers an active-

high enable input and an active-high open-drain output.

Finally, the MAX6898A/P offers an active-low enable

input and an active-low open-drain output. The

MAX6899A/P offers an active-low enable with an active-

high push-pull output.

All devices operate from a 1.5V to 5.5V supply voltage

and are fully specified over the -40°C to +125°C operat-

ing temperature range. These devices are available in

ultra-small 6-pin µDFN (1.0mm x 1.5mm) and thin

SOT23 (1.60mm x 2.90mm) packages.

19-3673; Rev 8; 7/11

Typical Operating Circuit and Selector Guide appear at end

of data sheet.

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Automotive

Medical Equipment

Intelligent Instruments

Portable Equipment

________________________________________________________________ Maxim Integrated Products

General Description

Computers/Servers

Critical µP Monitoring

Set-Top Boxes

Telecom

Applications

Sequencing/Supervisory Circuits

Ultra-Small, Adjustable

♦ 1.8% Accurate Adjustable Threshold Over

♦ Operate from V

♦ Capacitor-Adjustable Delay

♦ Active-High/-Low Enable Input Options

♦ Active-High/-Low Output Options

♦ Open-Drain (28V Tolerant)/Push-Pull Output

♦ Low Supply Current (10µA, typ)

♦ Fully Specified from -40°C to +125°C

♦ Ultra-Small 6-Pin µDFN Package or Thin SOT23

Ordering Information continued at end of data sheet.

Note: All devices are specified over the -40°C to +125°C oper-

ating temperature range.

+ Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

MAX6895AALT+

MAX6895AAZT+

MAX6895PALT+T

MAX6895PAZT+

MAX6896AALT+

MAX6896AAZT+

MAX6896AAZT/V+T

MAX6896PALT+T

MAX6896PAZT+

MAX6896PAZT/V+T

Pin Configurations continued at end of data sheet.

Temperature

Options

Package

TOP VIEW

( ) FOR MAX6899 ONLY.

PART

(ENABLE)

ENABLE

PIN-PACKAGE

6 µDFN

6 Thin SOT23

6 µDFN

6 Thin SOT23

6 µDFN

6 Thin SOT23

6 µDFN

6 Thin SOT23

of 1.5V to 5.5V

Ordering Information

Pin Configurations

MAX6895

MAX6897

MAX6899

CDELAY

µDFN

GND

OUT

Features

TOP MARK

+AADO

+AADK

+AADL

+AADP

+AATA

+AW

+AX

+AY

+AZ

Related parts for MAX6895AAL

MAX6895AAL Summary of contents

Page 1

... Active-High/-Low Output Options ♦ Open-Drain (28V Tolerant)/Push-Pull Output Options ♦ Low Supply Current (10µA, typ) ♦ Fully Specified from -40°C to +125°C ♦ Ultra-Small 6-Pin µDFN Package or Thin SOT23 Package PART MAX6895AALT+ MAX6895AAZT+ MAX6895PALT+T MAX6895PAZT+ MAX6896AALT+ MAX6896AAZT+ MAX6896AAZT/V+T MAX6896PALT+T ...

Page 2

Ultra-Small, Adjustable Sequencing/Supervisory Circuits ABSOLUTE MAXIMUM RATINGS , ENABLE, ENABLE, IN....................................-0. OUT, OUT (push-pull) ................................-0. OUT, OUT (open-drain)..........................................-0.3V to +30V CDELAY......................................................-0. Output Current (all pins) ...................................................±20mA Continuous Power Dissipation (T = +70°C) ...

Page 3

ELECTRICAL CHARACTERISTICS (continued 1.5V to 5.5V -40°C to +125°C, unless otherwise specified. Typical values are otherwise noted.) (Note 2) PARAMETER SYMBOL OUT/OUT Output Low Voltage (Open-Drain or Push-Pull) Output High Voltage (Push-Pull) ...

Page 4

Ultra-Small, Adjustable Sequencing/Supervisory Circuits (V = 3.3V and T = +25°C, unless otherwise noted SUPPLY CURRENT vs. SUPPLY VOLTAGE 0.5 1.0 ...

Page 5

PIN MAX6895/ MAX6896/ MAX6897 MAX6898 THIN THIN µDFN µDFN µDFN SOT23 SOT23 1 1 — — — — — — — — — — ...

Page 6

Ultra-Small, Adjustable Sequencing/Supervisory Circuits ENABLE (MAX6895) ENABLE (MAX6899) IN LOGIC 0.5V 250nA 1.0V CDELAY Figure 1. MAX6895/MAX6899 Functional Diagram Detailed Description The MAX6895–MAX6899 is a family of ultra-small, low- power, sequencing/supervisory circuits. These devices provide adjustable voltage monitoring for inputs ...

Page 7

Monitor Input (IN) Connect the center point of a resistive divider monitor external voltages (see R1 and R2 of the Typical Operating Circuit ). IN has a rising threshold of V 0.5V and a falling threshold of ...

Page 8

Ultra-Small, Adjustable Sequencing/Supervisory Circuits UVLO IN ENABLE OUT t PROPA Figure 3. MAX6896A/MAX6898A Timing Diagram UVLO IN ENABLE OUT t PROPP Figure 4. MAX6895P/MAX6897P Timing Diagram 8 _______________________________________________________________________________________ t < t PROPA t DELAY ...

Page 9

UVLO IN ENABLE OUT t PROPP Figure 5. MAX6896P/MAX6898P Timing Diagram UVLO IN ENABLE OUT t PROPA Figure 6. MAX6899A Timing Diagram _______________________________________________________________________________________ Ultra-Small, Adjustable Sequencing/Supervisory Circuits t DELAY ...

Page 10

Ultra-Small, Adjustable Sequencing/Supervisory Circuits UVLO IN ENABLE OUT t PROPP Figure 7. MAX6899P Timing Diagram Enable Input (ENABLE or ENABLE ) The MAX6895/MAX6897 offer an active-high enable input (ENABLE), while the MAX6896/MAX6898/MAX6899 offer an active-low enable input ...

Page 11

Pullup Resistor Values (MAX6897/MAX6898) The exact value of the pullup resistors for the open- drain outputs is not critical, but some consideration should be made to ensure the proper logic levels when the device is sinking current. For example, if ...

Page 12

Ultra-Small, Adjustable Sequencing/Supervisory Circuits 5V BUS DC-DC EN SYSTEM ENABLE ENABLE MAX6895 OUT GND C CDELAY Figure 10. Multiple-Output Sequencing 12 ______________________________________________________________________________________ 2.5V 3.3V DC-DC EN ENABLE V ENABLE MAX6895 MAX6895 OUT GND GND ...

Page 13

... PART ENABLE INPUT MAX6895AALT+T Active-High MAX6895AAZT+T Active-High MAX6895PALT+T Active-High MAX6895PAZT+T Active-High MAX6896AALT+T Active-Low MAX6896AAZT+T Active-Low MAX6896PALT+T Active-Low MAX6896PAZT+T Active-Low MAX6897AALT+T Active-High MAX6897AAZT+T Active-High MAX6897PALT+T Active-High MAX6897PAZT+T Active-High MAX6898AALT+T Active-Low MAX6898AAZT+T Active-Low MAX6898PALT+T Active-Low MAX6898PAZT+T Active-Low MAX6899AALT+T Active-Low MAX6899AAZT+T Active-Low MAX6899PALT+T Active-Low ...

Page 14

Ultra-Small, Adjustable Sequencing/Supervisory Circuits TOP VIEW V CDELAY MAX6896 MAX6898 1 2 ENABLE GND µDFN Chip Information PROCESS: BiCMOS 14 ______________________________________________________________________________________ Pin Configurations (continued) TOP VIEW OUT TOP VIEW + ENABLE 1 6 CDELAY ...

Page 15

REVISION REVISION NUMBER DATE 10/07 — 5 Corrected Absolute Maximum Ratings and made style corrections to Electrical 11/09 6 Characteristics and TOC8 and TOC9 7/10 Revised Figures 3, 4, and 6. 7 Added automotive packages for MAX6896A and MAX6896P. Added ...

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