ADP2441ACPZ-R7

ADP2441Es de frecuencia constante y utiliza el control de modo actualSynchronous step-down DC-DC regulator, puede conducir cargas de hasta 1 A y tiene excelentes características de regulación de línea y carga. Funciona en un amplio rango de voltaje de entrada (4.5 V a 36 V) y es ideal para ajustar la potencia de muchos tipos de fuentes de entrada. También tiene un tiempo de encendido mínimo muy bajo (50 ns), lo que lo hace adecuado para aplicaciones que requieren una relación de reducción muy alta.

The output voltage is available from 0.6 V to 0.9 V × V_INAdjust between. The device integrates low resistance N-channel MOSFETs for both high-side and low-side devices for high efficiency.

The switching frequency can be adjusted from 300 kHz to 1 MHz with external resistors. The ADP2441 also has a precision power good (PGOOD) open-drain output signal.

At lower loads, the regulator improves efficiency by skipping pulses and reducing switching losses by operating in pulse-skipping mode. In addition, under medium to high load conditions, the regulator operates in fixed-frequency pulse-width modulation (PWM) mode to reduce electromagnetic interference (EMI).

The ADP2441 uses hiccup mode to protect the IC from short-circuits or output overcurrent conditions. An externally programmable soft-start limits inrush current at startup with a wide range of load capacitors. Other important features include tracking, input undervoltage lockout (UVLO), thermal shutdown (TSD), and precision enable (EN), as well as logic-level shutdown inputs.

The ADP2441 is available in a 3 mm × 3 mm, 12-lead LFCSP package and is specified over the −40°C to +125°C junction temperature range.

apply

• Aplicaciones de carga de terminales
• Distributed power systems
• Fuente de alimentación de control industrial
• Los rieles estándar se convierten a 24 V/12 V/5 V/3,3 V

• Advantages and features

  • Amplio rango de voltaje de entrada: 4.5 V a 36 V
  • Tiempo mínimo de encendido: 50 ns
  • Corriente de carga máxima: 1 A
  • Alta eficiencia: hasta el 94%
  • Salida ajustable: hasta 0,6 V
  • Output voltage accuracy: ±1%

  • Frecuencia de conmutación ajustable: 300 kHz a 1 MHz
  • Pulse-skipping mode at low load saves power
  • Precisión habilita pines de entrada
  • Open-drain power supply good indication
  • External soft-start with tracking
  • Overcurrent limit protection
  • For more features, please refer to the data sheet

  
  

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