Isolated Transformer Driver

for PCMCIA Applications

2

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

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.

Note 1: Operating supply current is the current used by the MAX845 only. Load current is not included.

Note 2: Shutdown supply current includes output switch leakage currents.

Peak Output Switch Current (D1, D2) ......................................1A

Output Switch Voltage (D1, D2) .............................................12V

Average Output Switch Current (D1, D2) .........................200mA

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

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

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

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

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

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

D1, D2; 100mA

Low

FS = 0V

High

Low

High

CONDITIONS

V

2.5

2.2

µA

10

FS Input Current

50

V

0.8

FS Input Threshold

2.4

550

860

1100

450

675

900

Ω

1.5

4.0

Switch On-Resistance

pA

10

Shutdown Input Leakage Current

V

0.8

Shutdown Input Threshold

2.4

µA

0.4

Shutdown Supply Current (Note 2)

500

kHz

575

Switch Frequency

mA

1.1

5.0

Operating Supply Current (Note 1)

UNITS

MIN

TYP

MAX

PARAMETER

Minimum Start-Up Voltage