Diodes Incorporated AP3441/L & AP3445/L Step-down DC-DC Converters

Diodes Incorporated AP3441/L and AP3445/L Step-down DC-DC Converters offer excellent stability, fast transient response, and excellent line and load regulation with high efficiency. The Diodes Incorporated devices deliver 2A (AP3441/L) and 3A (AP3445/L) maximum output current. These synchronous DC-DC buck converters consume only 55μA of no-load quiescent current. Ultra-low R_DS(ON) integrated MOSFETs, and 100% duty cycle operation make these devices ideal for high output voltage and high current applications requiring a low dropout threshold. Pulse skip mode maintains high efficiency at light-load conditions.

The AP3441/L is offered in a W-DFN2020-8 package. The AP3445/L is available in the SOT236 package. All package options are lead-free, halogen-free, and antimony-free and are entirely RoHS compliant.

Features

2.7V to 5.5V input voltage
0.6V to V_INoutput voltage
Output Current
- AP3441, AP3441L, 2A
- AP3445, AP3445L, 3A
0.6V reference voltage with ±1.5% precision
55µA (Typ) no load quiescent current
<1µA shutdown current
100% duty cycle operation
1MHz switching frequency
No external compensation required
Thermal shutdown

Short circuit protection
- AP3441, AP3445 hiccup mode protection
- AP3441L, AP3445L latch off protection
Over-voltage protection
- AP3441, AP3445 non-latch off protection
- AP3441L, AP3445L latch off protection
Totally lead-free and fully RoHS compliant
Halogen and antimony free "green" device
Package
- AP3441/L, W-DFN2020-8
- AP3445/L, SOT236