MAX817MCSA 查看數據表（PDF） - Maxim Integrated

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MAX817MCSA

+5V Microprocessor Supervisory Circuits

Maxim Integrated 

+5V Microprocessor Supervisory Circuits

ABSOLUTE MAXIMUM RATINGS

Input Voltage

VCC, BATT ..........................................................-0.3V to +6.0V

All Other Pins (Note 1).............................-0.3V to (VCC + 0.3V)

Input Current

VCC Peak ..............................................................................1A

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

BATT Peak .....................................................................250mA

BATT Continuous .............................................................50mA

GND .................................................................................25mA

Output Current

OUT................................................................................250mA

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

OUT Short-Circuit Duration.................................................10sec

Continuous Power Dissipation (TA = +70°C)

Plastic DIP (derate 9.09mW/°C above +70°C) .............727mW

SO (derate 5.88mW/°C above +70°C) ..........................471mW

µMAX (derate 4.10mW/°C above +70°C) .....................330mW

Operating Temperature Ranges

MAX81_ _C_A ......................................................0°C to +70°C

MAX81_ _E_A ...................................................-40°C to +85°C

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

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

Note 1: The input voltage limits on PFI and WDI may be exceeded (up to 12V VIN) if the current into these pins is limited to less

than 10mA.

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.

ELECTRICAL CHARACTERISTICS

(VCC = +4.75V to +5.5V for MAX81_L, VCC = +4.5V to +5.5V for MAX81_M, VBATT = 2.8V, TA = TMIN to TMAX, unless otherwise

noted. Typical values are at TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

Operating Voltage Range, VCC,

VBATT (Note 2)

0

5.5

V

Supply Current (excluding IOUT)

ISUPPLY

As applicable; CE IN = 0V,

WDI and MR unconnected

MAX81_ _C

MAX81_ _E

11

45

µA

11

60

Supply Current in Battery-

Backup Mode (excluding IOUT)

VCC = 0V

TA = +25°C

TA = TMIN to

TMAX

0.05

1.0

µA

5.0

TA = +25°C -0.10

0.02

BATT Standby Current (Note 3)

5.5V > VCC > (VBATT + 0.2V)

TA = TMIN to

TMAX

-1.00

µA

0.02

BATT Leakage Current,

Freshness Seal Enabled

VCC = 0V, VOUT = 0V

1

µA

VOUT Output

VCC to OUT On-Resistance

BATT to OUT On-Resistance

VOUT in Battery-Backup Mode

IOUT = 5mA

IOUT = 50mA

IOUT = 250µA, VCC < (VBATT - 0.2V)

VCC - VCC -

0.05 0.025

V

VCC - VCC -

0.5 0.25

5

10

Ω

100

Ω

VBATT - VBATT -

0.1 0.02

V

Battery Switch Threshold

(VCC - VBATT)

Battery Switchover Hysteresis

VCC < VRST

Power-up

20

mV

Power-down

-20

40

mV

2 _______________________________________________________________________________________

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