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LM2676SX-5.0/NOPB

3A buck, 5V fixed, 40V max, 260kHz, DMOS, TO-263-7

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Pieza del fabricante：

LM2676SX-5.0/NOPB

Paquete：

TO-263-7 (10.10 x 8.89 mm)

Marca：
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Compromiso de calidad
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Descripción

Productos

The LM2676SX-5.0/NOPB from Texas Instruments is a SIMPLE SWITCHER high-efficiency 3A step-down voltage regulator with fixed 5V output in a 7-pin TO-263 surface-mount package. Using a 150mOhm DMOS output switch for >90% efficiency, it operates at 260kHz with 8-40V input. The BOOST pin provides gate drive enhancement for the DMOS switch.

Especificaciones

Output Voltage 5.0V fixed (also 3.3V, 12V, adj)
Input Voltage 8V to 40V
Corriente de salida 3A
Switching Frequency 260kHz fixed
Efficiency Up to 94%
DMOS Rds(on) 150mOhm
Standby Current 50uA (ON/OFF=high)
Output Tolerance +/-2% max
Protection Thermal shutdown, current limit
Temperatura de funcionamiento -40 to +125 C (TJ)
Paquete TO-263-7

Características

  • 150mOhm DMOS output switch for >90% efficiency
  • 260kHz fixed frequency for small inductors
  • +/-2% output voltage tolerance
  • 50uA low standby current in shutdown
  • BOOST pin for enhanced gate drive
  • Thermal shutdown and current limit protection

Aplicaciones

  • High-efficiency 5V power from 12V/24V bus
  • Communication module power supplies
  • Electric meter power supplies
  • Motor driver auxiliary supplies

The LM2676SX-5.0/NOPB from Texas Instruments is a SIMPLE SWITCHER high-efficiency 3A step-down voltage regulator with fixed 5V output in a 7-pin TO-263 surface-mount package. Using a 150mOhm DMOS output switch for >90% efficiency, it operates at 260kHz with 8-40V input. The BOOST pin provides gate drive enhancement for the DMOS switch.

The LM2676SX-5.0/NOPB operates as described in the product overview. Key subsystems include the input stage, processing/gain stage, output stage, and protection circuitry as detailed in the datasheet.

Pin Nombre Tipo Descripción
1 SWITCH Salida DMOS switch output to inductor
2 INPUT Entrada Unregulated input (8-40V)
3 CB E/S Boost capacitor for gate drive
4 GND Potencia Suelo
5 FEEDBACK Entrada Feedback sense
6 ON/OFF Entrada Shutdown (high=off)
7 NC - Sin conexión
Pestaña GND Potencia Ground/thermal pad
  • High-efficiency 5V power from 12V/24V bus
  • Communication module power supplies
  • Electric meter power supplies
  • Motor driver auxiliary supplies
Modelo Fabricante Paquete Notas
LM2676T-5.0 TI TO-220-7 Through-hole version
LM2596S-5.0 TI TO-263-5 Lower cost, bipolar output
LMR33630ADDFR TI SOT-23-THIN Modern 3A replacement
TPS54360DDAR TI SOIC-8 Higher Vin, modern
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