Product Category :
Power management > Power supply control IC >Step-down DC-DC converter
|Monolithic Step-Down DC-DC Converter with High-Accuracy Power Good|
|Automotive ECU, Advanced Driver Assistance System (ADAS)|
Asahi Kasei Microdevices Corporation, (AKM), has launched the AP3440 series, 4.5A drive high-efficiency DC-DC converter for automotive ECU applications requiring high-speed processing.
The AP3440 integrates a high-precision power good function. It is suitable for a power supply of CPU core and DDR that are used in a high reliability required system such as ADAS.
The AP3440 series is available in 1.112V, 1.227V, 1.822V output voltage to meet various system requirements.
The output voltage is constantly monitored by ±2% high precision power good function. When the output voltage is in an abnormal state, the AP3440 sends the error flag signal to microcomputers promptly. It supports a fail-safe environment with appropriate data saving processing.
The AP3440 integrates a MOSFET that can supply maximum output current of 4.5A in a 5mm × 5mm 28-pin QFN package with a heat dissipation pad on the back surface. 2.1MHz operation helps miniaturizing peripheral components. Therefore, a printed circuit board can be downsized.
Electrical characteristics are guaranteed in Tj = -40 to 150°C, assuming operation environments that require high reliability.
AP3440ABN seriesMonolithic Step-Down DC-DC Converter with High-Accuracy Power Good
|Input Voltage||[V]||4.1 to 5.5|
|Output Voltage||[V]||1.112 ＋2.07%,－1.80%||1.227 ＋1.96%,－1.79%||1.822 ＋1.81%,－1.87%|
|Output Voltage |
Monitoring Threshold (H)
|[V]||1.164 ＋1.63%,－2.00%||1.280 ±1.64%||1.905 ＋1.63%,－1.68%|
|Output Voltage |
Monitoring Threshold (L)
|[V]||1.063 ＋1.69%,－1.60%||1.172 ±1.62%||1.763 ±1.64%|
|Maximum Output Current||[A]||4.5|
|Oscillation Frequency||[MHz]||2.1 ± 7.14%|
|Operation Temperature||[°C]||-40 to 105|
|Package||28-pin QFN (5 x 5 x 0.75mm, 0.5mm pitch)|
|Status||Available Now||Available Now||Available Now|