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LM2675MX-5.0

1A 5.0V step-down regulator, 6.5-40Vin, 260kHz, 96% eff, SOIC-8, SIMPLE SWITCHER

9603

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Pieza del fabricante：

LM2675MX-5.0

Paquete：

SOIC-8 (4.9 x 6.0 x 1.75 mm)

Marca：
Categorías de productos：
Compromiso de calidad
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Descripción

Productos

The LM2675MX-5.0 from Texas Instruments is a 1A step-down voltage regulator in a SOIC-8 package providing a fixed 5.0V output from an input up to 40V. Based on a DMM (Die Mounted MOSFET) topology, it operates at 260 kHz switching frequency, requires minimal external components (inductor, diode, capacitors), and achieves up to 96% efficiency.

Especificaciones

Output Voltage 5.0V (fixed)
Input Voltage Range 6.5V to 40V
Maximum Output Current 1A
Switching Frequency 260 kHz (fixed)
Efficiency Up to 96%
Corriente de reposo 2.5 mA typ (operating)
Standby Current 50 µA (shutdown mode)
Line Regulation 0.02%/V typ
Load Regulation 0.1% typ
Temperatura de funcionamiento -40°C to +125°C
Paquete SOIC-8 (4.9 x 6.0 mm)

Características

  • Fixed 5.0V output with 1A current capability
  • Wide 6.5V to 40V input voltage range
  • 260 kHz fixed switching frequency
  • Only 4 external components required
  • Internal 1A DMOS power switch
  • Thermal shutdown and current limit protection
  • SOIC-8 surface-mount package

Aplicaciones

  • 12V/24V to 5V step-down converters
  • Industrial distributed power systems
  • Automotive accessory power
  • Battery-powered equipment
  • Embedded 5V logic supply

The Texas Instruments LM2675MX-5.0 is a member of the SIMPLE SWITCHER family, providing a complete 1A step-down voltage regulator solution in a SOIC-8 package. It converts input voltages from 6.5V to 40V to a precise 5.0V output using a fixed 260 kHz switching frequency and an integrated DMOS power switch. The design requires only four external components: input capacitor, output capacitor, bootstrap capacitor, and inductor, significantly simplifying the BOM and PCB layout compared to controllers requiring external MOSFETs and compensation networks. The device achieves up to 96% efficiency through the low RDS(ON) of the integrated DMOS switch and optimized current-mode control. Internal protection includes cycle-by-cycle current limiting and thermal shutdown with automatic recovery.

The LM2675MX-5.0 uses a current-mode PWM buck converter topology with an integrated N-channel DMOS power switch. During the switch on-time, the DMOS transistor connects the input voltage (VIN) to the inductor through the SW pin, causing inductor current to ramp up linearly. During the off-time, the DMOS switch turns off and the inductor current freewheels through an external Schottky catch diode to ground, causing the inductor current to ramp down. The current-mode control loop senses the switch current through an internal sense resistor and compares it to an error amplifier output that represents the difference between the output voltage and the 5.0V internal reference. The 260 kHz fixed switching frequency sets the inductor and capacitor values, and the current-mode architecture provides inherent input voltage feedforward for good line transient response. The bootstrap capacitor (CBOOT) between the CBOOT and SW pins provides gate drive voltage above VIN for the high-side DMOS switch. Current limiting is achieved by clamping the peak switch current on a cycle-by-cycle basis, while thermal shutdown disables switching when the junction temperature exceeds approximately 180°C.

Pin Nombre Descripción
1 CB Bootstrap Capacitor (connect to SW via 0.01µF cap)
2 GND Suelo
3 ON/OFF Shutdown Control (high=on, low=off, float=on)
4 FB Feedback Input (connect to output for fixed 5.0V)
5 VIN Input Supply Voltage (6.5-40V)
6 VIN Input Supply Voltage (6.5-40V)
7 SW Switch Output (connect to inductor and diode)
8 SW Switch Output (connect to inductor and diode)
  • 12V to 5V Conversion: Standard automotive 12V battery to 5V logic supply with 1A load capability for head units, ECUs, and accessory modules
  • 24V Industrial: 24V industrial bus to 5V sensor and MCU supply with up to 40V input surviving transient overvoltage events
  • Battery Equipment: 4-cell Li-Ion (9-16.8V) to 5V regulation for portable test equipment and handheld instruments
  • Embedded 5V Rail: Minimum external component count (4 components) for space-constrained PCB designs needing a reliable 5V supply
  • Distributed Power: 24V or 48V to 5V point-of-load conversion in telecom and data communication racks with 96% peak efficiency
Modelo Marca Vout Iout (A) Vin (V)
LM2675MX-3.3 TI 3.3V 1 6.5-40
LM2676MX-5.0 TI 5.0V 3 6.5-40
LM2596SX-5.0 TI 5.0V 3 4.5-40
TS2596CM-5 TOREX 5.0V 3 4.5-40
AP1501A-K5G-13 BCD 5.0V 3 4.5-40
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Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

Envíos y pagos

Materialparts is a professional global supplier of electronic components with over 20 years of industry experience. We provide one-stop supply of passive components, integrated circuits, as well as parts for industrial control, automotive electronics, consumer electronics and medical devices. Below are the unified shipping and payment policies applicable to all orders, samples and bulk purchases worldwide.

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Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Servicio y embalaje

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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We specialize in a full range of passive and active electronic components, including SMD resistors, power resistors, connectors, aviation connectors, LED beads, flexible circuit boards, printed circuit boards, and integrated circuits. Our professional team provides BOM list consolidation, component matching, and alternative model recommendation services. We support sample orders, small-batch trial production, and mass production orders with flexible MOQs to meet diverse procurement needs.

2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

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Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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