© Semiconductor Components Industries, LLC, 2005

November, 2005 − Rev. 5

1

Publication Order Number:

TL594/D

TL594

Precision Switchmode

Pulse Width Modulation

Control Circuit

The TL594 is a fixed frequency, pulse width modulation control

circuit designed primarily for Switchmode power supply control.

Features

MAXIMUM RATINGS

Rating

Symbol

Value

Unit

Power Supply Voltage

42

V

Collector Output Voltage

42

V

Collector Output Current

(Each Transistor) (Note 1)

500

mA

Amplifier Input Voltage Range

−0.3 to +42

V

1000

mW

Thermal Resistance

Junction−to−Ambient (PDIP)

Junction−to−Air (TSSOP)

Junction−to−Ambient (SOIC)

80

140

135

°C/W

Operating Junction Temperature

125

°C

Storage Temperature Range

−55 to +125

°C

Operating Ambient Temperature Range

TL594CD, CN, CDTB

−40 to 85

°C

Derating Ambient Temperature

45

°C

Maximum ratings are those values beyond which device damage can occur.

Maximum ratings applied to the device are individual stress limit values (not

normal operating conditions) and are not valid simultaneously. If these limits are

exceeded, device functional operation is not implied, damage may occur and

reliability may be affected.

1. Maximum thermal limits must be observed.

*For additional information on our Pb−Free strategy and soldering details, please

download the ON Semiconductor Soldering and Mounting Techniques

Reference Manual, SOLDERRM/D.

SO−16

D SUFFIX

CASE 751B

TSSOP−16

DTB SUFFIX

CASE 948F

1

PDIP−16

N SUFFIX

CASE 648

1

1

MARKING

DIAGRAMS

1

16

TL594CDG

AWLYWW

A

= Assembly Location

WL, L

= Wafer Lot

YY, Y

= Year

WW, W = Work Week

G or

G = Pb−Free Package

TL59

4DTB

ALYW

G

G

See detailed ordering and shipping information in the package

dimensions section on page 10 of this data sheet.

ORDERING INFORMATION

PIN CONNECTIONS

Ground

C1

1

Inv

Input

C2

Q2

E2

E1

1

≈ 0.1 V

Oscillator

5.0 V

REF

(Top View)

Noninv

Input

Inv

Input

Output

Control

Noninv

Input

Compen/PWN

Comp Input

Deadtime

Control

Error

Amp

+

−

2

3

4

5

6

7

89

10

11

12

13

14

15

16

2

Error

Amp

+

−

Q1

http://onsemi.com

16

1

TL594CN

AWLYYWWG

1

16

(Note: Microdot may be in either location)