MAX791CSLASHD datasheet(2/20 Pages) MAXIM

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Microprocessor Supervisory Circuit

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Input Voltage (with respect to GND)

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

VBATT..................................................................-0.3V to + 6V

All Other Inputs.....................................-0.3V to (VOUT + 0.3V)

Input Current

VCC Peak ..........................................................................1.0A

VCC Continuous ............................................................250mA

VBATT Peak ..................................................................250mA

VBATT Continuous ..........................................................25mA

GND, BATT ON .............................................................100mA

All Other Outputs ............................................................25mA

Continuous Power Dissipation (TA = +70°C)

Plastic DIP (derate 10.53mW/°C above +70°C) ..........842mW

Narrow SO (derate 8.70mW/°C above +70°C) ............696mW

CERDIP (derate 10.00mW/°C above +70°C) ...............800mW

Operating Temperature Ranges

MAX791C_ _ ......................................................O°C to +70°C

MAX791E_ _ ....................................................-40°C to +85°C

MAX791MJE ..................................................-55°C to +125°C

Storage Temperature Range .............................-65°C to +160°C

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

ELECTRICAL CHARACTERISTICS

(VCC = 4.75V to 5.5V, VBATT = 2.8V, TA = TMIN to TMAX, unless otherwise noted.)

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.

ABSOLUTE MAXIMUM RATINGS

PARAMETER

CONDITIONS

Supply Current in Battery-Backup

Mode (Excludes IOUT) (Note 2)

MIN

TYP

MAX

UNITS

VBATT = 4.5V, IOUT = 20mA

VBATT - 0.3

Operating Voltage Range

VCC, VBATT (Note 1)

5.5

VCC - 0.3

VCC - 0.2

VCC - 0.05 VCC - 0.02

VBATT-to-VOUT On-Resistance

VBATT = 2.0V

µA

Ω

Battery-Switchover Threshold

Power down

VBATT - 0.03

VOUT in Normal

Operating Mode

VCC = 3V, VBATT = 2.8V, IOUT = 100mA

VCC - 0.2

VCC - 0.12

VCC = 4.5V

0.8

1.6

0.8

1.2

VCC = 4.5V

VCC - 0.40

VBATT = 2.8V, IOUT = 10mA

VBATT - 0.25

0.04

Supply Current in Normal

Operating Mode (Excludes IOUT)

VCC > VBATT - 1V

150

µA

VCC-to-VOUT On-Resistance

VCC = 3V

1.2

2.0

Ω

VBATT = 4.5V

815

VBATT = 2.8V

Power up

VBATT + 0.03

VOUT in Battery-Backup Mode

VBATT = 2.0V, IOUT = 5mA

VBATT - 0.15

Battery-Switchover Hysteresis

Low-Battery Detector Threshold

IOUT = 250mA

IOUT = 25mA

MAX791C/E

MAX791M

MAX791C/E

MAX791M

VCC < VBATT - 1.2V,

VBATT = 2.8V

TA = +25°C

TA = TMIN to TMAX

VBATT Standby Current

(Note 3)

TA = TMIN to TMAX

TA = +25°C

-1.0

0.02

µA

VBATT + 0.2V

≤ VCC

-0.1

0.02

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