TL598

PULSEWIDTHMODULATION CONTROL CIRCUITS

SLVS053D − FEBRUARY 1988 − REVISED NOVEMBER 2003

5

POST OFFICE BOX 655303

(unless otherwise noted) (continued)

dead-time control section (see Figure 1) (see Note 4)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

Input bias current (DTC)

VI = 0 to 5.25 V

−2

−10

µA

Maximum duty cycle, each output

DTC = 0 V

0.45

Input threshold voltage (DTC)

Zero duty cycle

3

3.3

V

Input threshold voltage (DTC)

Maximum duty cycle

0

V

† All typical values, except for parameter changes with temperature, are at TA = 25°C.

NOTE 4. Pulse-testing techniques must be used that maintain the junction temperature as close to the ambient temperature as possible.

pwm comparator section (see Note 4)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

Input threshold voltage (FEEDBACK)

DTC = 0 V

3.75

4.5

V

Input sink current (FEEDBACK)

V(FEEDBACK) = 0.5 V

0.3

0.7

mA

† All typical values, except for parameter changes with temperature, are at TA = 25°C.

NOTE Pulse-testing techniques must be used that maintain the junction temperature as close to the ambient temperature as possible.

total device (see Figure 1) (see Note 4)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

Standby supply current

RT = Vref,

All other inputs and outputs open

VCC = 15 V

15

21

mA

Standby supply current

RT = Vref,

All other inputs and outputs open

VCC = 40 V

20

26

mA

Average supply current

DTC = 2 V

15

mA

† All typical values, except for parameter changes with temperature, are at TA = 25°C.

NOTE 4. Pulse-testing techniques must be used that maintain the junction temperature as close to the ambient temperature as possible.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Output-voltage rise time

CL = 1500 pF,

VC = 15 V,

VCC = 15 V,

See Figure 2

60

150

ns

Output-voltage fall time

CL = 1500 pF,

VC = 15 V,

VCC = 15 V,

See Figure 2

35

75

ns

NOTE 4. Pulse-testing techniques must be used that maintain the junction temperature as close to the ambient temperature as possible.