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TL494

Motorola Inc
Part Number TL494
Manufacturer Motorola Inc
Description PULSE WIDTH MODULATION CONTROLLER
Published Apr 16, 2005
Detailed Description Order this document by TL494/D TL494 SWITCHMODE™ Pulse Width Modulation Control Circuit The TL494 is a fixed frequency,...
Datasheet PDF File TL494 PDF File

TL494
TL494

Overview
Order this document by TL494/D TL494 SWITCHMODE™ Pulse Width Modulation Control Circuit The TL494 is a fixed frequency, pulse width modulation control circuit designed primarily for SWITCHMODE power supply control.
• • • • • • • • SWITCHMODE PULSE WIDTH MODULATION CONTROL CIRCUIT SEMICONDUCTOR TECHNICAL DATA 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 D SUFFIX PLASTIC PACKAGE CASE 751B (SO–16) N SUFFIX PLASTIC PACKAGE CASE 648 PIN CONNECTIONS Noninv Input 1 Inv Input 2 Noninv 16 Input Inv 15 Input 14 Vref Output 13 Control 12 VCC Oscillator 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 TL494C TL494I Derating Ambient Temperature NOTE: + Error 1 Amp – + 2 Error Amp – VCC 5.
0 V REF Symbol VCC VC1, VC2 IC1, IC2 VIR PD RθJA TJ Tstg TA TL494C 42 42 500 TL494I Unit V V mA V mW °C/W °C °C °C Compen/PWN Comp Input 3 Deadtime Control 4 CT 5 RT 6 ≈ 0.
1 V 11 C2 Q2 Ground 7 10 E2 Q1 –0.
3 to +42 1000 80 125 –55 to +125 0 to +70 – 25 to +85 C1 8 9 E1 (Top View) ORDERING INFORMATION Device Operating Temperature Range TA = 0° to +70°C TA = – 25° to +85°C Package SO–16 Plastic Plastic Rev 1 TA 45 °C TL494CD TL494CN TL494IN 1.
Maximum thermal limits must be observed.
© Motorola, Inc.
1996 MOTOROLA ANALOG IC DEVICE DATA 1 TL494 RECOMMENDED OPERATING CONDITIONS Characteristics Power Supply Voltage Collector Output Voltage Collector Output Current (Eac...


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