TL494ING ON Semiconductor, TL494ING Datasheet

TL494ING

Manufacturer Part Number

TL494ING

Description

IC PWM VM 16DIP

Manufacturer

ON Semiconductor

Series

SWITCHMODE™r

Datasheet

1.TL494CDR2G.pdf (14 pages)

Specifications of TL494ING

Pwm Type

Voltage Mode

Number Of Outputs

Frequency - Max

200kHz

Duty Cycle

50%

Voltage - Supply

7 V ~ 40 V

Buck

Boost

Flyback

Inverting

Doubler

Divider

Cuk

Isolated

Operating Temperature

-40°C ~ 85°C

Package / Case

16-DIP (0.300", 7.62mm)

Frequency-max

200kHz

Topology

Push-Pull

Output Current

500 mA

Switching Frequency

200 KHz

Duty Cycle (max)

48 %

Operating Supply Voltage

15 V

Maximum Operating Temperature

+ 85 C

Minimum Operating Temperature

- 40 C

Fall Time

40 ns

Mounting Style

Through Hole

Rise Time

100 ns

Synchronous Pin

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

TL494INGOS

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

TL494ING

Manufacturer:

ON Semiconductor

Quantity:

355

Current page: 1 of 14
Download datasheet (145Kb)

TL494, NCV494

SWITCHMODE™ Pulse Width

Modulation Control Circuit

circuit designed primarily for SWITCHMODE power supply control.

Features

•

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

June, 2005 − Rev. 6

MAXIMUM RATINGS

unless otherwise noted.)

download the ON Semiconductor Soldering and Mounting Techniques

Reference Manual, SOLDERRM/D.

Power Supply Voltage

Collector Output Voltage

Collector Output Current

Amplifier Input Voltage Range

Power Dissipation @ T

Thermal Resistance, Junction−to−Ambient

Operating Junction Temperature

Storage Temperature Range

Operating Ambient Temperature Range

Derating Ambient Temperature

The TL494 is a fixed frequency, pulse width modulation control

and Control Changes

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

Pb−Free Packages are Available*

(Each transistor) (Note 1)

TL494B

TL494C

TL494I

NCV494B

Rating

(Full operating ambient temperature range applies,

≤ 45°C

Symbol

qJA

, I

stg

−55 to +125

−40 to +125

−0.3 to +42

−40 to +85

0 to +70

Value

1000

500

125

°C/W

Unit

°C

See detailed ordering and shipping information in the package

dimensions section on page 4 of this data sheet.

Compen/PWN

Comp Input

*This marking diagram also applies to NCV494.

Deadtime

Control

Ground

Noninv

Input

ORDERING INFORMATION

Inv

YY, Y

WW, W

http://onsemi.com

PIN CONNECTIONS

≈ 0.1 V

CASE 751B

−

Error

Amp

CASE 648

D SUFFIX

N SUFFIX

SOIC−16

PDIP−16

Oscillator

(Top View)

= B, C or I

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb−Free Package

Publication Order Number:

2 Error

5.0 V

Amp

REF

−

DIAGRAMS

MARKING

AWLYYWWG

TL494xDG

AWLYWW

TL494xN

Noninv

Input

Inv

Input

Output

Contro

ref

TL494/D

Related parts for TL494ING

TL494ING Summary of contents

Page 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. © Semiconductor Components Industries, LLC, 2005 June, 2005 − Rev. 6 ...

Page 2

RECOMMENDED OPERATING CONDITIONS Characteristics Power Supply Voltage Collector Output Voltage Collector Output Current (Each transistor) Amplified Input Voltage Current Into Feedback Terminal Reference Output Current Timing Resistor Timing Capacitor Oscillator Frequency ELECTRICAL CHARACTERISTICS For typical values T = 25°C, for ...

Page 3

ELECTRICAL CHARACTERISTICS (V For typical values T = 25°C, for min/max values T A Characteristics ERROR AMPLIFIER SECTION Input Offset Voltage ( (Pin 3) Input Offset Current ( (Pin 3) Input Bias ...

Page 4

... TL494CD TL494CDG TL494CDR2 TL494CDR2G TL494CN TL494CNG TL494IN TL494ING NCV494BDR2* NCV494BDR2G* †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. *NCV494 −40° +125°C. Guaranteed by design. NCV prefix is for automotive and other applications requiring site and change ...

Page 5

Oscillator 0.12V 4 0.7V Deadtime Control 0.7mA + 1 − Error Amp Feedback PWM 1 Comparator Input Capacitor C T Feedback/PWM Comp. Deadtime Control Flip−Flop Clock Input Flip−Flop Q Flip−Flop Q Output ...

Page 6

Description The TL494 is a fixed−frequency pulse width modulation control circuit, incorporating the primary building blocks required for the control of a switching power supply. (See Figure 1.) An internal−linear sawtooth oscillator is frequency− programmable by two external components, R ...

Page 7

A VOL 1.0 10 100 1 FREQUENCY (Hz) Figure 4. Open Loop Voltage Gain and Phase versus Frequency ...

Page 8

Error Amplifier Under Test + V in − − ref Other Error Amplifier Figure 10. Error−Amplifier Characteristics 15V Each C L Output Q 15pF Transistor E 90% 90 10% 10% t ...

Page 9

Output Voltage of System Error Amp V − ref 2 Positive Output Voltage ref Figure 14. Error−Amplifier Sensing Techniques Output Control V ref Output ...

Page 10

V ref ref Figure 18. Slaving Two or More Control Circuits +V = 8.0V to 20V − 1M 33k ...

Page 11

TL494 50V C R D.T. O.C. Gnd 0.001 47k Figure 21. Pulse Width Modulated Step−Down Converter Test Line Regulation Load Regulation ...

Page 12

G K −T− SEATING PLANE 0.25 (0.010 TL494, NCV494 PACKAGE DIMENSIONS SOIC−16 D SUFFIX CASE 751B−05 ISSUE J −B− 0.25 (0.010 ...

Page 13

−T− 0.25 (0.010 TL494, NCV494 PACKAGE DIMENSIONS PDIP−16 N SUFFIX CASE 648−08 ISSUE T NOTES: 1. DIMENSIONING AND TOLERANCING PER 2. CONTROLLING DIMENSION: ...

Page 14

... Fax: 480−829−7709 or 800−344−3867 Toll Free USA/Canada Email: orderlit@onsemi.com TL494, NCV494 N. American Technical Support: 800−282−9855 Toll Free USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Phone: 81−3−5773−3850 http://onsemi.com 14 ON Semiconductor Website: http://onsemi ...

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