AP3440ABN182
AP3440ABN182 is High-Accurate Step-Down DC-DC Converter manufactured by Asahi Kasei Microdevices.
Description
The AP3440 is a synchronous rectification PWM control step-down DC-DC converter of the current mode with excellent transient load response characteristics. The remended operational temperature ranges from 40 to 125ºC. It is capable for automotive use that demands high reliability. The AP3440 supports input voltage from 4.1V to 5.5V and its output voltage is 1.822V. It integrates power MOSFET corresponding to a 4.5A output current at the maximum. The AP3440 is equipped with Output Over-Current Protection, Output Over-Voltage Protection, Under Voltage Lock Out, Thermal Protection, and Power-good function. The AP3440 is housed in a 28-pin QFN0505 package.
2. Features
Input Voltage Range
: 4.1V ~ 5.5V
Output Voltage
: 1.822V (+1.81%, 1.87%)
Output Current Peak
: 4.5A
Oscillation Frequency
: 2100 k Hz
External Synchronization (supporting Master/Slave mode), Frequency Range : 1800k Hz ~ 2250k Hz
Integrated Power MOSFET
Soft Start Function
High-Accurate Power-Good Function
Discharging Function of Output Capacitor
Protection Functions: Over Current, Over Voltage, Under Voltage Lock Out and Thermal Protections
Remended Operational Temperature Range: Ta= 40 ~ 125ºC
Package: 28-pin QFN0505 (Exposed Pad and Pins are Plated)
016008997-E-00
Figure 1. Application -1-
2016/10
[AP3440]
3. Table of Contents
1. General Description
1 2. Features
1 3. Table of Contents 2 4. Block Diagram 3 5. Ordering Guide...
