TL494-D| Datasheet

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TL494, NCV494 SWITCHMODETM Pulse Width Modulation Control Circuit
The TL494 is a fixed frequency, pulse width modulation control circuit designed primarily for SWITCHMODE power supply control.
Features

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 Pb-Free Packages are Available*

http://onsemi.com MARKING DIAGRAMS
16 SOIC-16 D SUFFIX CASE 751B 1 TL494xDG AWLYWW

16 PDIP-16 * N SUFFIX CASE 648 1

TL494xN AWLYYWWG

MAXIMUM RATINGS (Full operating ambient temperature range applies,
unless otherwise noted.) Rating Power Supply Voltage Collector Output Voltage Collector Output Current (Each transistor) (Note 1) Amplifier Input Voltage Range Power Dissipation @ TA 45 C Thermal Resistance, Junction-to-Ambient Operating Junction Temperature Storage Temperature Range Operating Ambient Temperature Range TL494B TL494C TL494I NCV494B Derating Ambient Temperature Symbol VCC VC1, VC2 IC1, IC2 VIR PD RqJA TJ Tstg TA -40 to +125 0 to +70 -40 to +85 -40 to +125 TA 45 C Value 42 42 500 -0.3 to +42 1000 80 125 -55 to +125 Unit V V mA *This marking diagram also applies to NCV494. V mW C/W C C C x A WL YY, Y WW, W G = B, C or I = Assembly Location = Wafer Lot = Year = Work Week = Pb-Free Package

PIN CONNECTIONS
Noninv Input 1 Inv Input 2 Compen/PWN Comp Input 3 Deadtime Control 4 CT 5
Oscillator + Error 1 Amp - + 2 Error Amp - VCC 0.1 V 5.0 V REF

Noninv 16 Input Inv 15 Input 14 Vref Output 13 Contro l 12 VCC 11 C2

RT 6
Q2

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.

Ground 7 C1 8
Q1

10 E2 9 E1

(Top View)

ORDERING INFORMATION
See detailed ordering and shipping information in the package dimensions section on page 4 of this data sheet.

*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

1

June, 2005 - Rev. 6

Publication Order Number: TL494/D

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TL494-D DATASHEET