TL598CD datasheet(2/17 Pages) TI

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TL598

PULSEWIDTHMODULATION CONTROL CIRCUITS

SLVS053D − FEBRUARY 1988 − REVISED NOVEMBER 2003

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

FUNCTION TABLE

INPUT/OUTPUT

CTRL

OUTPUT FUNCTION

VI = GND

Single-ended or parallel output

VI = REF

Normal push-pull operation

functional block diagram

GND

SIGNAL

REF

VCC

Reference

Regulator

Undervoltage

Lockout Control

GND

POWER

OUT2

OUT1

Pulse-Steering

Flip-Flop

FEEDBACK

−

1IN+

DTC

PWM

Comparator

Error Amplifier

−

Error Amplifier

≈0.1 V

DTC

Comparator

Oscillator

OUTPUT CTRL

(see Function Table)

1IN−

2IN+

2IN−

0.7 mA

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†

Supply voltage, VCC (see Note 1)

41 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Amplifier input voltage, VI

VCC + 0.3 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Collector voltage

41 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output current (each output), sink or source, IO

250 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Package thermal impedance,

θJA (see Notes 2 and 3): D package

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

N package

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating virtual junction temperature, TJ

150

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, Tstg

−65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† 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 under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES:

1. All voltage values, except differential voltages, are with respect to the signal ground terminal.

2. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable

ambient temperature is PD = (TJ(max) − TA)/θJA. Operating at the absolute maximum TJ of 150°C can impact reliability.

3. The package thermal impedance is calculated in accordance with JESD 51-7.

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