ADM690A datasheet(3/8 Pages) AD

3 / 8 page

ADM690A/ADM692A/ADM802L/M/ADM805L/M

–3–

REV. 0

ABSOLUTE MAXIMUM RATINGS*

(TA = +25

°C unless otherwise noted)

VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V

VBATT

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V

All Other Inputs . . . . . . . . . . . . . . . . . . –0.3 V to VCC + 0.3 V

Input Current

VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200 mA

VBATT

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA

GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA

Digital Output Current . . . . . . . . . . . . . . . . . . . . . . . . 20 mA

Power Dissipation, N-8 DIP . . . . . . . . . . . . . . . . . . . 400 mW

JA Thermal Impedance

. . . . . . . . . . . . . . . . . . . . 120

°C/W

Power Dissipation, SO-8 SOIC . . . . . . . . . . . . . . . . . 500 mW

JA Thermal Impedance

. . . . . . . . . . . . . . . . . . . . 110

°C/W

Operating Temperature Range

Industrial (A Version) . . . . . . . . . . . . . . . . –40

°C to +85°C

Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . +300

°C

Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . +215

°C

Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . +220

°C

Storage Temperature Range . . . . . . . . . . . . –65

°C to +150°C

ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >4 kV

*Stresses above those listed under “Absolute Maximum Ratings” may cause

permanent damage to the device. This is a stress rating only and functional

operation of the device at these or any other conditions above those listed in the

operational sections of this specification is not implied. Exposure to absolute

maximum ratings for extended periods of time may affect device reliability.

ORDERING GUIDE

Temperature

Package

Model

Range

Option

ADM690AAN

–40

°C to +85°C

N-8

ADM690AARN

–40

°C to +85°C

SO-8

ADM690AARM

–40

°C to +85°C

RM-8

ADM692AAN

–40

°C to +85°C

N-8

ADM692AARN

–40

°C to +85°C

SO-8

ADM802LAN

–40

°C to +85°C

N-8

ADM802LARN

–40

°C to +85°C

SO-8

ADM802MAN

–40

°C to +85°C

N-8

ADM802MARN

–40

°C to +85°C

SO-8

ADM805LAN

–40

°C to +85°C

N-8

ADM805LARN

–40

°C to +85°C

SO-8

ADM805MAN

–40

°C to +85°C

N-8

ADM805MARN

–40

°C to +85°C

SO-8

PIN CONFIGURATIONS

PIN FUNCTION DESCRIPTION

Mnemonic

Function

VCC

Power Supply Input: +5 V Nominal.

VBATT

Backup Battery Input. As VCC falls below the reset threshold and below VBATT by 20 mV, VBATT will be switched

to VOUT. On power-up as VCC rises to 20 mV above VBATT, VOUT will be switched back to VCC.

VOUT

Output Voltage. When VCC is above the reset threshold, VOUT is connected to VCC through an on chip switch.

When VCC is below the reset threshold, the higher of VCC or VBATT is connected to VOUT.

GND

0 V. Ground reference for all signals.

PFI

Power Fail Comparator Input. If PFI is less than 1.25 V, the power fail output PFO goes low. If unused, PFI

should be connected to VCC or GND.

PFO

Power Fail Comparator Output. If PFI is less than 1.25 V, the power fail output PFO goes low.

RESET

Logic Output. RESET goes low if

1. VCC falls below the Reset Threshold

2. The watchdog timer is not serviced within its timeout period (1.6 seconds)

The reset threshold is typically 4.65 V for the ADM690A/ADM802L/ADM805L and 4.4 V for the ADM692A/

ADM802M/ADM805M. RESET remains low for 200 ms after VCC returns above the threshold. RESET also

goes low for 200 ms if the watchdog timer is enabled but not serviced within its timeout period.

RESET

Active high RESET output (ADM805L/M only). This is the inverse of RESET. The asserted (high) level is VCC

or VBATT whichever is higher.

WDI

Watchdog Input. WDI is a three level input. If WDI remains either high or low for longer than 1.6 s, (RESET)

(RESET) is activated. The timer resets with each transition on the WDI line. The watchdog timer may be

disabled if WDI is left floating or is connected to a high impedance three stated logic output.

TOP VIEW

(Not to Scale)

ADM690A

ADM692A

ADM802L

ADM802M

ADM805L

ADM805M

PFO

WDI

RESET (RESET)

VBATT

VOUT

VCC

GND

PFI

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