Diodes Incorporated

AP3441

AP3441/L EVB User Guide

Topologie: Buck
Eingangsspannung (min.): 2.70 V
Eingangsspannung (max.): 5.50 V
Schaltfrequenz (min.): 800.00 kHz
Schaltfrequenz (max.): 1200.00 kHz
Ausgang 1: 3.30 V / 3.000 A

Erstveröffentlichung am 16.08.2019, Version 1.0 vom

Beschreibung

The AP3441/L is a 3A step-down DC-DC converter. At heavy load, the constant frequency PWM control performs excellent stability and transient response. No external compensation components are required. The AP3441/L supports a range of input voltages from 2.7V to 5.5V, allowing the use of a single Li+/Li- polymer cell, multiple Alkaline/NiMH cell, and other standard power sources. The output voltage is adjustable from 0.6V to the input voltage. The AP3441/L employs internal power switch and synchronous rectifier to minimize external part count and realize high efficiency. During shutdown, the input is disconnected from the output and the shutdown current is less than 1μA. Other key features include over-temperature and short circuit protection, and under-voltage lockout to prevent deep battery discharge. The AP3441/L delivers 3A maximum output current while consuming only 55μA of no-load quiescent current. Ultra-low RDS(ON) integrated MOSFETs and 100% duty cycle operation make the AP3441/L an ideal choice for high output voltage, high current applications which require a low dropout threshold. Pulse skip mode allows to maintain high efficiency at light-load conditions.

Merkmale

  • Output Current: Up to 3A
  • Output Voltage: 0.6V to VIN
  • Input Voltage: 2.7V to 5.5V
  • 55μA (Typ) No Load Quiescent Current
  • Shutdown Current: <1μA
  • 100% Duty Cycle Operation
  • 1MHz Switching Frequency
  • Internal Soft Start
  • No External Compensation Required
  • Current Limit Protection
  • Short Circuit Protection
  • AP3441/L: Latch Off Protection
  • AP3441: Hiccup Mode Protection
  • Over Voltage Protection
  • AP3441/L: Latch Off Protection
  • AP3441: Non Latch Off Protection
  • Thermal Shutdown

Artikel

  Artikel Nr. SPEC Produktserie L
(µH)
IR
(A)
ISAT
(A)
RDC typ.
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
Montageart Muster
74438357015 PDF WE-MAPI SMT-Speicherdrossel 1.5 6.2 8.5 17.1 20 48 SMT
74438357022 PDF WE-MAPI SMT-Speicherdrossel 2.2 5.2 7 22 26 35 SMT
74438357010 PDF WE-MAPI SMT-Speicherdrossel 1 7.4 9.6 11.6 13.5 59 SMT