TL494CD datasheet(1/12 Pages) ONSEMI

номер детали	TL494CD

подробное описание детали	SWITCHMODE PULSE WIDTH MODULATION CONTROL CIRCUIT

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производитель	ONSEMI [ON Semiconductor]

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April, 2004 − Rev. 5

1

Publication Order Number:

TL494/D

TL494, NCV494

SWITCHMODE™ Pulse Width

Modulation Control Circuit

The TL494 is a fixed frequency, pulse width modulation control

circuit designed primarily for SWITCHMODE power supply control.

• Complete Pulse Width Modulation Control Circuitry

• On−Chip Oscillator with Master or Slave Operation

• On−Chip Error Amplifiers

• On−Chip 5.0 V Reference

• Adjustable Deadtime Control

• Uncommitted Output Transistors Rated to 500 mA Source or Sink

• Output Control for Push−Pull or Single−Ended Operation

• Undervoltage Lockout

• NCV Prefix for Automotive and Other Applications Requiring Site

and Control Changes

MAXIMUM RATINGS (Full operating ambient temperature range applies,

unless otherwise noted.)

Rating

Symbol

Value

Unit

Power Supply Voltage

VCC

42

V

Collector Output Voltage

VC1,

VC2

42

V

Collector Output Current

(Each transistor) (Note 1)

IC1, IC2

500

mA

Amplifier Input Voltage Range

VIR

−0.3 to +42

V

Power Dissipation @ TA ≤ 45°C

PD

1000

mW

Thermal Resistance, Junction−to−Ambient

RqJA

80

°C/W

Operating Junction Temperature

TJ

125

°C

Storage Temperature Range

Tstg

−55 to +125

°C

Operating Ambient Temperature Range

TL494B

TL494C

TL494I

NCV494B

TA

−40 to +125

0 to +70

− 40 to +85

−40 to +125

°C

Derating Ambient Temperature

TA

45

°C

1. Maximum thermal limits must be observed.

PIN CONNECTIONS

CT

RT

Ground

C1

1

Inv

Input

C2

Q2

E2

E1

1

≈ 0.1 V

Oscillator

VCC

5.0 V

REF

(Top View)

Noninv

Input

Inv

Input

Vref

Output

Contro

l

VCC

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

Device

Package

Shipping†

ORDERING INFORMATION

TL494CD

SO−16

48 Units/Rail

SO−16

D SUFFIX

CASE 751B

16

1

16

TL494xD

AWLYWW

MARKING

DIAGRAMS

x

= B, C or I

A

= Assembly Location

WL, L

= Wafer Lot

YY, Y

= Year

WW, W = Work Week

1

16

PDIP−16

N SUFFIX

CASE 648

TL494xN

AWLYYWW

16

1

TL494CDR2

2500 Tape & Reel

SO−16

TL494CN

25 Units/Rail

PDIP−16

TL494IN

25 Units/Rail

PDIP−16

SO−16

TL494BD

48 Units/Rail

TL494BDR2

2500 Tape & Reel

SO−16

http://onsemi.com

*

*This marking diagram also applies to NCV494.

NCV494BDR2*

2500 Tape & Reel

SO−16

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specification

Brochure, BRD8011/D.

*NCV494: Tlow = −40°C, Thigh = +125°C.

Guaranteed by design. NCV prefix is for

automotive and other applications requiring site

and change control.

Аналогичный номер детали - TL494CD

производитель	номер детали	датащи	подробное описание детали
Motorola, Inc	TL494CD	197Kb / 12P	SWITCHMODE PULSE WIDTH MODULATION CONTROL CIRCUIT
Texas Instruments	TL494CD	210Kb / 8P	PULSE-WIDTH-MODULATION CONTROL CIRCUITS
Texas Instruments	TL494CD	449Kb / 17P	PULSE-WIDTH-MODULATION CONTROL CIRCUITS
Fairchild Semiconductor	TL494CD	56Kb / 8P	SMPS Controller
ON Semiconductor	TL494CD	144Kb / 14P	SWITCHMODE TM Pulse Width Modulation Control Circuit June, 2005 ??Rev. 6

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Аналогичное описание - TL494CD

производитель	номер детали	датащи	подробное описание детали
Motorola, Inc	TL494	197Kb / 12P	SWITCHMODE PULSE WIDTH MODULATION CONTROL CIRCUIT
Motorola, Inc	TL594	198Kb / 12P	PRECISION SWITCHMODE PULSE WIDTH MODULATION CONTROL CIRCUIT
List of Unclassifed Man...	PJ494	688Kb / 11P	Switchmode Pulse Width Modulation Control Circuit
Ceramate Technical	CP494	155Kb / 11P	SWITCHMODE Pulse Width Modulation Control Circuit
ON Semiconductor	TL594	145Kb / 12P	Precision Switchmode Pulse Width Modulation Control Circuit November, 2005 ??Rev. 5
ON Semiconductor	TL494	144Kb / 14P	SWITCHMODE TM Pulse Width Modulation Control Circuit June, 2005 ??Rev. 6
First Components Intern...	TL494	634Kb / 11P	Switchmode Pulse Width Modulation Control Circuits
Estek Electronics Co. L...	ET-KA7500	478Kb / 4P	SWITCHMODE Pulse Width Modulation Control Circuit
ON Semiconductor	TL594	151Kb / 12P	Precision Switchmode Pulse Width Modulation Control Circuit November, 2005 ??Rev. 5
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