3

Dead Time Control Section

Characteristic

Symbol

Test Condition

Min.

Typ.

Max.

Unit

Input Bias Current (Pin4)

-

-2

-10

Max. Duty cycle, Each Output

Vcc = 15V, Pin4 = 0V,

Output Control Pin = Vref

43

-

45

%

Zero Duty

-

3

3.3

Input Threshold

Voltage

Max Duty

-

0

-

-

V

Error Amplifier Section

Characteristic

Symbol

Test Condition

Min.

Typ.

Max.

Unit

Input Offset Voltage

-

2

10

mV

Input Offset Current

-

25

250

nA

Input Bias Current

-

0.2

1

Input Common Mode

voltage Range

7V

40V

-0.3

-

V

Large Signal Open Loop

Voltage Range

0.5V

3.5V

60

74

-

dB

Unity Gain Band width

-

-

650

-

PWM Comparator Section (Pin3)

Characteristic

Symbol

Test Condition

Min.

Typ.

Max.

Unit

Inhibit Threshold Voltage

Zero duty cycle

-

4

4.5

V

Output Source Current

Io

+

2

-

-

mA

Output Sink Current

Io

-

-0.2

-0.6

-

mA

Output Section

Characteristic

Symbol

Test Condition

Min.

Typ.

Max.

Unit

Common-Emitter

-

1.1

1.3

Output Satur-

ation Voltage

Emitter-Follower

-

1.5

2.5

V

Collector off-state Current

-

2

100

Emitter off-state Current

-

-

-100

Output Control(Pin 13)

Output Control Voltage

Required for single-Ended or

Parallel Output Operation

-

-

-

0.4

V

Output Control Voltage Req-

uired for Push-pull operation

-

2.4

-

-

V

Total Device

Standby power Supply

Current

-

-

6

10

mA

: These limits apply when the voltage measured at Pin 3 is with in the range specified.

STC494