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UCC3813-3

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PWM de 1 MHz con modo de corriente BiCMOS de baja potencia y bajo consumo, UVLO de 4.1 V/3.6 V, cicl

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UCC3813-3

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Detalles del producto

Topology Boost, Flyback Control mode Current Features Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Fixed frequency, Leading edge blanking, Multi-topology, Soft start Duty cycle (max) (%) 100
Topology Boost, Flyback Control mode Current Features Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Fixed frequency, Leading edge blanking, Multi-topology, Soft start Duty cycle (max) (%) 100
TSSOP (PW) 8 19.2 mm² (3 mm × 6.4 mm) SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • 100µA typical starting supply current
  • 500µA typical operating supply current
  • Operation to 1MHz
  • Internal soft start
  • Internal fault soft start
  • Internal leading-edge blanking of the current-sense signal
  • 1A totem-pole output
  • 70ns typical response from current-sense to gate-drive output
  • 1.5% tolerance voltage reference
  • Same pinout as the UCC3802 device, UC3842 device, and UC3842A device families
  • 100µA typical starting supply current
  • 500µA typical operating supply current
  • Operation to 1MHz
  • Internal soft start
  • Internal fault soft start
  • Internal leading-edge blanking of the current-sense signal
  • 1A totem-pole output
  • 70ns typical response from current-sense to gate-drive output
  • 1.5% tolerance voltage reference
  • Same pinout as the UCC3802 device, UC3842 device, and UC3842A device families

The UCC3813-x device family of high-speed, low-power integrated circuits contains all of the control and drive components required for off-line and DC-to-DC fixed-frequency current-mode switching power supplies with minimal parts count.

These devices have the same pin configuration as the UC384x device family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.

The UCC3813-x device family offers a variety of package options, temperature-range options, choice of maximum duty cycle, and choice of critical voltage levels. Devices with lower reference voltage such as the UCC3813-3 and UCC3813-5 fit best into battery operated systems, while the higher reference and the higher UVLO hysteresis of the UCC3813-2 device and UCC3813-4 device make these ideal choices for use in off-line power supplies.

The UCC2813-x device series is specified for operation from –40°C to 85°C and the UCC3813-x device series is specified for operation from 0°C to 70°C.

The UCC3813-x device family of high-speed, low-power integrated circuits contains all of the control and drive components required for off-line and DC-to-DC fixed-frequency current-mode switching power supplies with minimal parts count.

These devices have the same pin configuration as the UC384x device family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.

The UCC3813-x device family offers a variety of package options, temperature-range options, choice of maximum duty cycle, and choice of critical voltage levels. Devices with lower reference voltage such as the UCC3813-3 and UCC3813-5 fit best into battery operated systems, while the higher reference and the higher UVLO hysteresis of the UCC3813-2 device and UCC3813-4 device make these ideal choices for use in off-line power supplies.

The UCC2813-x device series is specified for operation from –40°C to 85°C and the UCC3813-x device series is specified for operation from 0°C to 70°C.
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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos UCCx813-x Low-Power Economy BiCMOS Current-Mode PWM datasheet (Rev. G) PDF | HTML 25/04/2025
Nota sobre la aplicación Conditioning a Switch-mode Power Supply Current Signal Using TI Op Amps (Rev. A) PDF | HTML 11/06/2021
Nota sobre la aplicación Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B) 12/03/2019
Guía de selección Power Management Guide 2018 (Rev. R) 25/06/2018
Guía del usuario UCC3813 Dual Output Boost Converter 9/10/2003
Nota sobre la aplicación UCC38C42 Family of High-Speed BiCMOS Current-Mode PWM Controllers 7/02/2002
Nota sobre la aplicación Differences Between the UCC3813 and the UCC3800 PWM Families 2/06/2000
Nota sobre la aplicación U-133A UCC3800/1/2/3/4/5 BiCMOS Current Mode Control IC's 5/09/1999
Nota sobre la aplicación DN-62 Switching Power Supply Topology Voltage Mode vs. Current Mode 5/09/1999
Nota sobre la aplicación DN-42A Design Considerations for Transitioning from UC3842 to the New UCC3802 5/09/1999
Nota sobre la aplicación U-111, Practical Considerations in Current Mode Power Supplies 5/09/1999

Diseño y desarrollo

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