Maker : ON Semiconductor
Part No. : TL494CD

  Datasheet PDF : TL494CD.pdf
  Cross Reference : TL494CD Cross Reference
  Buy Component : TL494CD Find Stock and Price

Shortcut : TL494CD  TL494CD  TL494CD  TL494CD  TL494CJ  TL494CN  TL494CN  TL494CN  TL494CN 

Product Information

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. 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 www.DataSheet4U.com 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 TL494, NCV494 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 Symbol VCC VC1, VC2 IC1, IC2 Vin lfb lref RT CT fosc Min 7.0 − − −0.3 − − 1.8 0.0047 1.0 Typ 15 30 − − − − 30 0.001 40 Max 40 40 200 VCC − 2.0 0.3 10 500 10 200 Unit V V mA V mA mA kW mF kHz ELECTRICAL CHARACTERISTICS (VCC = 15 V, CT = 0.01 mF, RT = 12 kW, unless otherwise noted.) For typical values TA = 25°C, for min/max values TA is the operating ambient temperature range that applies, unless otherwise noted. Characteristics REFERENCE SECTION Reference Voltage (IO = 1.0 mA) Line Regulation (VCC = 7.0 V to 40 V) Load Regulation (IO = 1.0 mA to 10 mA) Short Circuit Output Current (Vref = 0 V) OUTPUT SECTION Collector Off−State Current (VCC = 40 V, VCE = 40 V) Emitter Off−State Current VCC = 40 V, VC = 40 V, VE = 0 V) Collector−Emitter Saturation Voltage (Note 2) Common−Emitter (VE = 0 V, IC = 200 mA) Emitter−Follower (VC = 15 V, IE = −200 mA) Output Control Pin Current Low State (VOC v 0.4 V) High State (VOC = Vref) Ou...

Link URL