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LM22679TJ-ADJ

5A SIMPLE SWITCHER buck, 4.5-42V, 500kHz, adjustable, TO-263-7

9085

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Pieza del fabricante：

LM22679TJ-ADJ

Paquete：

TO-263-7 (D2PAK-7)

Marca：
Categorías de productos：
Compromiso de calidad
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Descripción

Productos

The LM22679TJ-ADJ from TI is a 5A SIMPLE SWITCHER step-down regulator with 4.5-42V input, 500kHz switching, and adjustable output from 1.285V to 37V in TO-263-7 for industrial and automotive power.

Especificaciones

Corriente de salida 5A
Input Voltage 4.5-42V
Output Voltage 1.285V-37V adjustable
Switching Freq 500kHz
Efficiency Up to 95%
Shutdown Iq 25uA
Temp -40~125C

Características

  • 5A output current
  • 4.5-42V wide input range
  • Adjustable output 1.285-37V
  • 500kHz switching frequency
  • Up to 95% efficiency
  • 25uA shutdown current
  • Internal compensation

Aplicaciones

  • Industrial power supplies
  • Automotive systems
  • Distributed power architectures
  • Dispositivos a pilas
  • FPGA/processor power

The LM22679TJ-ADJ from TI is a 5A SIMPLE SWITCHER step-down regulator with 4.5-42V input, 500kHz switching, and adjustable output from 1.285V to 37V in TO-263-7 for industrial and automotive power.

The LM22679TJ-ADJ is a 5A step-down (buck) voltage regulator using current-mode control with an integrated 90mOhm N-channel MOSFET. The control loop operates as follows: the error amplifier compares the FB pin voltage (derived from the output through a resistor divider) against the internal 1.285V reference, and generates an error signal. This error signal controls the peak inductor current through the PWM comparator. Each switching cycle, the high-side MOSFET turns on, ramping inductor current up until the peak threshold is reached, then turns off and the inductor current flows through the body diode. The switching frequency is internally set to 500kHz. The BOOT pin provides gate drive voltage for the high-side MOSFET via an external bootstrap capacitor. Soft-start is implemented through the CSS pin to limit inrush current. Current limiting is cycle-by-cycle at approximately 6.5A typical.

Pin Nombre Tipo Función
1 VIN Entrada de alimentación Input supply (4.5-42V)
2 ON/OFF Entrada Enable control (active high)
3 CSS Analógico Soft-start capacitor connection
4 FB Entrada Feedback voltage (1.285V reference)
5 GND Potencia Ground and thermal pad
6 BOOT Analógico Bootstrap capacitor for high-side driver
7 SW Potencia de salida Switching node (inductor connection)
EP Almohadilla expuesta Potencia Thermal pad, connect to GND plane
  • Industrial power supplies
  • Automotive systems
  • Distributed power architectures
  • Dispositivos a pilas
  • FPGA/processor power
    • Fabricante Número de pieza Paquete Notas
    Texas Instruments LM22679MR-ADJ SO PowerPAD-8 Same part, different package
    Texas Instruments LM22675TJ-ADJ TO-263-7 3A version, same family
    Monolithic Power MP8759GD-Z TO-263-7 5A, 5-36V, pin-compatible
    Dispositivos analógicos LT8610ABEMSE MSE-16 42V 2.5A, lower Iq alternative
    Texas Instruments LM46002 VSSOP-8 2A, 60V, WEBENCH supported
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    Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
     

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