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TPS54335ADDAR

4.5-28V Input, 3A Synchronous Buck Converter, Eco-mode, 1.5MHz, HSOIC-8

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Pieza del fabricante：

TPS54335ADDAR

Paquete：

HSOIC-8 DDA with PowerPAD (4.9 x 6.0 x 1.5 mm)

Marca：
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Compromiso de calidad
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Descripción

Productos

The TPS54335ADDAR from Texas Instruments is a 4.5 V to 28 V input, 3 A output synchronous step-down (buck) DC-DC converter with integrated 128 mOhm and 84 mOhm MOSFETs. It features Eco-mode for light-load efficiency, adjustable switching frequency from 50 kHz to 1.5 MHz, and a fixed 2 ms soft-start. The device is housed in an 8-pin HSOIC (DDA) package with PowerPAD for enhanced thermal performance.

Especificaciones

Topology Synchronous Buck
Input Voltage 4.5 V to 28 V
Output Voltage 0.8 V to 24 V (Adjustable)
Corriente de salida 3 A
Switching Frequency 50 kHz to 1.5 MHz (Adjustable)
Reference Voltage 0.8 V (±0.8%)
High-Side FET RDS(on) 128 mOhm
Low-Side FET RDS(on) 84 mOhm
Shutdown Current 2 µA
Operating IQ 310 µA (typical, not switching)
Paquete HSOIC-8 DDA (4.9 x 6.0 mm)
Temperatura de funcionamiento -40°C to 150°C

Características

  • Integrated 128 mOhm and 84 mOhm MOSFETs for high efficiency
  • Adjustable switching frequency: 50 kHz to 1.5 MHz
  • Internal 2 ms soft-start
  • Eco-mode pulse skipping for light-load efficiency
  • 0.8 V reference with ±0.8% accuracy over temperature
  • Current-mode control for simplified compensation
  • Monotonic startup into pre-biased outputs
  • Hiccup mode overcurrent protection
  • Thermal shutdown (TSD) and overvoltage protection
  • Integrated boot recharge diode

Aplicaciones

  • Consumer electronics (set-top boxes, digital TV, routers)
  • Battery charging systems
  • Industrial and automotive audio power supplies
  • 5 V, 12 V, 24 V distributed power bus systems
  • Low-power FPGA and processor core supplies

The TPS54335ADDAR is a 28 V, 3 A synchronous step-down buck converter from Texas Instruments featuring integrated N-channel MOSFETs (128 mOhm high-side, 84 mOhm low-side). The device uses peak current-mode control for simplified frequency compensation and fast transient response. An adjustable switching frequency (50 kHz to 1.5 MHz) enables optimization for efficiency or solution size. Eco-mode pulse skipping maintains high efficiency at light loads by reducing switching losses. The integrated boot recharge diode minimizes external component count. Comprehensive protection features include cycle-by-cycle current limiting, hiccup mode overcurrent protection, thermal shutdown, and overvoltage transition protection.

The TPS54335ADDAR uses a constant-frequency peak current-mode control architecture. The internal oscillator sets the switching frequency based on an external RT resistor. During each switching cycle, the high-side MOSFET turns on and current ramps through the inductor. When the peak current reaches the level set by the error amplifier output, the high-side MOSFET turns off and the low-side MOSFET turns on, allowing inductor current to freewheel. An internal transconductance error amplifier compares the divided output voltage to the 0.8 V reference and generates the COMP control signal. The BOOT pin provides gate drive voltage for the high-side MOSFET via an external bootstrap capacitor. Eco-mode disables the low-side MOSFET switching when the inductor current approaches zero at light loads, reducing switching losses and improving efficiency.

Pin Nombre Tipo Función
1 BOOT Potencia Bootstrap capacitor for high-side driver
2 VIN Potencia Input voltage supply
3 ES Entrada Enable (active high, internal pullup)
4 SS Entrada Soft-start / frequency sync
5 VSENSE Entrada Output voltage feedback
6 COMP Salida Error amplifier output / compensation
7 GND Suelo Signal and power ground
8 PH Salida Phase node (switching output)
Tampón GND Suelo PowerPAD thermal and electrical ground
  • Set-top box and digital TV power supplies (5V, 3.3V rails)
  • Consumer electronics with 12V or 24V input buses
  • Battery charger and portable device power management
  • Industrial control systems with distributed power architecture
  • Networking equipment (CPE, Wi-Fi routers, cable modems)
Fabricante Número de pieza Paquete Notas
Texas Instruments TPS54336ADDAR HSOIC-8 Fixed 340 kHz, adjustable soft-start
Texas Instruments TPS54332DDAR HSOIC-8 4.5-28V, 3A, lower frequency range
Monolithic Power MP1584EN-LF-Z SOIC-8 4.5-28V, 3A, 1.5MHz
Richtek RT8279GSP SOP-8 4.5-36V, 3A buck
onsemi NCV51411DR2G SOIC-8 4.5-40V, 1.5A automotive buck
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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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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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Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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