TL494BD
  • Share:

onsemi TL494BD

Manufacturer No:
TL494BD
Manufacturer:
onsemi
Package:
Tube
Description:
IC REG CTRLR BCK/PSH-PULL 16SOIC
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The TL494BD, produced by onsemi, is a fixed-frequency pulse-width-modulation (PWM) control circuit designed primarily for switch mode power supply control. This integrated circuit incorporates all the necessary functions for constructing a PWM control circuit on a single chip, making it highly versatile for various power supply applications. The TL494BD features an on-chip oscillator, error amplifiers, a 5.0 V reference voltage, and adjustable dead-time control, among other key functionalities.

Key Specifications

Characteristics Symbol Min Typ Max Unit
Power Supply Voltage VCC 7.0 15 40 V
Collector Output Voltage VC1, VC2 - - 42 V
Collector Output Current (Each transistor) IC1, IC2 - - 500 mA mA
Operating Junction Temperature TJ - - 125 °C
Storage Temperature Range Tstg -55 - 125 °C
Operating Ambient Temperature Range TA -40 - 125 °C
Reference Voltage (IO = 1.0 mA) Vref 4.75 5.0 5.25 V
Oscillator Frequency (CT = 0.01 μF, RT = 12 kΩ) fosc 1.0 40 200 kHz

Key Features

  • Complete PWM Power-Control Circuitry: Includes all necessary functions for constructing a PWM control circuit on a single chip.
  • On-Chip Oscillator with Master or Slave Operation: Allows for flexible operation in various power supply configurations.
  • On-Chip Error Amplifiers: Provides high accuracy and stability in feedback control.
  • On-Chip 5.0 V Reference: Capable of sourcing up to 10 mA of load current with a 5% tolerance.
  • Adjustable Deadtime Control: Enables control over the total range of dead time.
  • Uncommitted Output Transistors: Rated to 500 mA source or sink current, suitable for push-pull or single-ended operation.
  • Undervoltage Lockout: Protects the device from operating below the minimum voltage threshold.
  • Pb-Free Packages Available: Compliant with environmental regulations.

Applications

  • Desktop PCs: Used in power supply units for desktop computers.
  • Microwave Ovens: Controls the power supply in microwave oven applications.
  • Power Supplies: AC/DC, isolated, with or without Power Factor Correction (PFC).
  • Server PSUs: Utilized in server power supply units.
  • Solar Micro-Inverters: Employed in solar power inverter systems.
  • Washing Machines: Used in both low-end and high-end washing machine power supplies.
  • E-Bikes: Controls power supplies in electric bicycles.
  • Telecom/Server AC/DC Supplies: Dual controller for analog power supplies.
  • Smoke Detectors: Used in smoke detector power supply circuits.
  • Solar Power Inverters: Employed in solar power inverter systems.

Q & A

  1. What is the primary function of the TL494BD?

    The TL494BD is a fixed-frequency pulse-width-modulation (PWM) control circuit designed primarily for switch mode power supply control.

  2. What is the operating voltage range of the TL494BD?

    The power supply voltage (VCC) range is from 7.0 V to 40 V.

  3. What is the maximum collector output current of the TL494BD?

    The maximum collector output current (IC1, IC2) is 500 mA.

  4. What is the reference voltage provided by the TL494BD?

    The TL494BD provides a stable 5.0 V reference voltage with a 5% tolerance.

  5. Can the TL494BD operate in push-pull or single-ended mode?

    Yes, the TL494BD can operate in either push-pull or single-ended mode.

  6. What is the purpose of the undervoltage lockout feature in the TL494BD?

    The undervoltage lockout feature protects the device from operating below the minimum voltage threshold.

  7. What are some common applications of the TL494BD?

    Common applications include desktop PCs, microwave ovens, power supplies, server PSUs, solar micro-inverters, and more.

  8. What is the maximum operating junction temperature of the TL494BD?

    The maximum operating junction temperature (TJ) is 125°C.

  9. Is the TL494BD available in Pb-free packages?

    Yes, the TL494BD is available in Pb-free packages.

  10. How can the oscillator frequency of the TL494BD be adjusted?

    The oscillator frequency can be adjusted using the timing resistor (RT) and timing capacitor (CT).

Product Attributes

Output Type:Transistor Driver
Function:Step-Down, Step-Up/Step-Down
Output Configuration:Positive
Topology:Buck, Push-Pull
Number of Outputs:2
Output Phases:1
Voltage - Supply (Vcc/Vdd):7V ~ 40V
Frequency - Switching:200kHz
Duty Cycle (Max):48%
Synchronous Rectifier:Yes
Clock Sync:No
Serial Interfaces:- 
Control Features:Dead Time Control, Frequency Control
Operating Temperature:-40°C ~ 125°C (TJ)
Mounting Type:Surface Mount
Package / Case:16-SOIC (0.154", 3.90mm Width)
Supplier Device Package:16-SOIC
0 Remaining View Similar

In Stock

-
247

Please send RFQ , we will respond immediately.

Same Series
TL494CDR2G
TL494CDR2G
IC REG CTRLR BCK/PSH-PULL 16SOIC
TL494BDR2G
TL494BDR2G
IC REG CTRLR BCK/PSH-PULL 16SOIC
NCV494BDR2G
NCV494BDR2G
IC REG CTRLR BCK/PSH-PULL 16SOIC
NCV494BDR2
NCV494BDR2
IC REG CTRLR BCK/PSH-PULL 16SOIC
TL494CDR2
TL494CDR2
IC REG CTRLR BCK/PSH-PULL 16SOIC
TL494CNG
TL494CNG
IC REG CTRLR BCK/PUSH-PULL 16DIP
TL494ING
TL494ING
IC REG CTRLR BCK/PUSH-PULL 16DIP
TL494BD
TL494BD
IC REG CTRLR BCK/PSH-PULL 16SOIC
TL494BDG
TL494BDG
IC REG CTRLR BCK/PSH-PULL 16SOIC
TL494BDR2
TL494BDR2
IC REG CTRLR BCK/PSH-PULL 16SOIC
TL494CDG
TL494CDG
IC REG CTRLR BCK/PSH-PULL 16SOIC

Similar Products

Part Number TL494BD TL494CD TL494ID TL494BDG
Manufacturer onsemi Texas Instruments Texas Instruments onsemi
Product Status Obsolete Active Active Obsolete
Output Type Transistor Driver Transistor Driver Transistor Driver Transistor Driver
Function Step-Down, Step-Up/Step-Down Step-Up, Step-Down, Step-Up/Step-Down Step-Up, Step-Down, Step-Up/Step-Down Step-Down, Step-Up/Step-Down
Output Configuration Positive Positive Positive Positive
Topology Buck, Push-Pull Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull Buck, Push-Pull
Number of Outputs 2 2 2 2
Output Phases 1 1 1 1
Voltage - Supply (Vcc/Vdd) 7V ~ 40V 7V ~ 40V 7V ~ 40V 7V ~ 40V
Frequency - Switching 200kHz 1kHz ~ 300kHz 1kHz ~ 300kHz 200kHz
Duty Cycle (Max) 48% 45% 45% 48%
Synchronous Rectifier Yes No No Yes
Clock Sync No No No No
Serial Interfaces - - - -
Control Features Dead Time Control, Frequency Control Dead Time Control, Frequency Control Dead Time Control, Frequency Control Dead Time Control, Frequency Control
Operating Temperature -40°C ~ 125°C (TJ) 0°C ~ 70°C (TA) -40°C ~ 85°C (TA) -40°C ~ 125°C (TJ)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 16-SOIC (0.154", 3.90mm Width) 16-SOIC (0.154", 3.90mm Width) 16-SOIC (0.154", 3.90mm Width) 16-SOIC (0.154", 3.90mm Width)
Supplier Device Package 16-SOIC 16-SOIC 16-SOIC 16-SOIC

Related Product By Categories

LTC3862EFE-1#PBF
LTC3862EFE-1#PBF
Analog Devices Inc.
IC REG CTRLR BOOST/SEPIC 24TSSOP
ADP2323ACPZ-R7
ADP2323ACPZ-R7
Analog Devices Inc.
IC REG CTRLR BUCK 32LFCSP
LT3758AEMSE#TRPBF
LT3758AEMSE#TRPBF
Analog Devices Inc.
IC REG CTRLR MULT TOP 10MSOP
UC2843BNG
UC2843BNG
onsemi
IC REG CTRLR FLYBACK 8DIP
TPS40211DGQR
TPS40211DGQR
Texas Instruments
IC REG CTRLR MULT TOP 10MSOP
UC2843AQD8R
UC2843AQD8R
Texas Instruments
IC REG CTRLR MULT TOPOLOGY 8SOIC
LM27402SQX/NOPB
LM27402SQX/NOPB
Texas Instruments
IC REG CTRLR BUCK 16WQFN
UC3525BN
UC3525BN
Texas Instruments
IC REG CTRLR MULT TOPOLOGY 16DIP
LM5009MMX/NOPB
LM5009MMX/NOPB
National Semiconductor
LM5009 9.5-95V WIDE VIN, 150MA C
UC3843BD1R2
UC3843BD1R2
onsemi
IC REG CTRLR FLYBACK 8SOIC
UC2844NG4
UC2844NG4
Texas Instruments
IC PWM BOOST FLYBCK ISO CM 8DIP
UCC38C42DRG4
UCC38C42DRG4
Texas Instruments
IC OFFLINE CTRLR PWM UVLO 8SOIC

Related Product By Brand

MMSZ5221BT1G
MMSZ5221BT1G
onsemi
DIODE ZENER 2.4V 500MW SOD123
MMBT3904LT1G
MMBT3904LT1G
onsemi
TRANS NPN 40V 0.2A SOT23-3
MJD44H11G
MJD44H11G
onsemi
TRANS NPN 80V 8A DPAK
MPSA42G
MPSA42G
onsemi
TRANS NPN 300V 0.5A TO92
M74VHC1GT04DFT1G
M74VHC1GT04DFT1G
onsemi
IC INVERTER 1CH 1-INP SC88A
MC74VHC1G32DTT1G
MC74VHC1G32DTT1G
onsemi
IC GATE OR 1CH 2-INP 5TSOP
NCP432BISNT1G
NCP432BISNT1G
onsemi
IC VREF SHUNT ADJ 0.5% SOT23-3
NCV4274ADS50R4G
NCV4274ADS50R4G
onsemi
IC REG LINEAR 5V 400MA D2PAK
NCP103AMX180TCG
NCP103AMX180TCG
onsemi
IC REG LINEAR 1.8V 150MA 4UDFN
NCV1117ST18T3G
NCV1117ST18T3G
onsemi
IC REG LINEAR 1.8V 1A SOT223
NCV4276CDS50R4G
NCV4276CDS50R4G
onsemi
IC REG LINEAR 5V 400MA D2PAK-5
NCV86601BDT50RKG
NCV86601BDT50RKG
onsemi
IC REG LINEAR 5V 150MA DPAK-5