TS494

4-7

2003/12 rev. A

Electrical Characteristics (continues)

PWM COMPARATOR SECTION

Parameter

Test Conditions*

Min

Typ

Max

Unit

Input threshold voltage (pin 3)

Zero duty cycle

--

4.0

4.5

V

Input sink current (pin 3)

V (pin 3)=0.7V

0.3

0.7

--

mA

TOTAL DEVICE

Vcc=15V

--

6.0

10

Standby supply current

pin 6 at Vref, all

other inputs and

outputs open

Vcc=40V

--

9.0

15

Average supply current

Vi (pin4)= 2V, See Figure 1

--

7.5

--

mA

SWITCHING CHARACTERISTICS

Output voltage rise time

--

100

200

Output voltage fall time

Common-emitter configuration,

See Figure 3

--

25

100

Output voltage rise time

--

100

200

Output voltage fall time

Emitter-follower configuration,

See Figure 4

--

40

100

ns

UNDERVOLTAGE LOCKOUT SECTION

Turn-on Threshold

Vcc increasing Iref = 1.0mA

5.5

6.43

7.0

V

Remark:

All typical value except for temperature coefficient are at Ta= 25

For conditions shown as Min or Max, use the appropriate value specified under recommended operating

conditions.

All typical values except for parameter changes with temperature are at Ta= 25

Duration of the short-circuit should not exceed one second

Standard deviation is a measure of the statistical distribution about the mean as derived from the formula

2

1

1

2

1

)

(

⎥

⎥

⎦

⎤

⎢

⎢

⎣

⎡

−

−

=

∑

=

N

n

n

N

x

x

σ

Temperature coefficient of timing capacitor and timing resistor not taken into account