AP3440：Buck Converter
| Part Number | Data Sheet | SPICE Model | Type | Efficiency (%) | RDS(ON) (mΩ) | Frequency Typ (kHz) | MinimumInput Voltage (V) | MaximumInput Voltage (V) | Output Current (A) | Output Voltage (V) | Standby Quiescent Current Typ (µA) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| AP3440 | AP3440.pdf | - | Buck | 94 | - | 300 | 2.95 | 5.5 | 4 | ADJ | 2 |
Description
The AP3440 is a current mode, PWM synchronous buck (step-down) DC-DC converter, capable of driving a 4A load with high efficiency, excellent line and load regulation.
The device integrates two N-channel power MOSFETs with low on-resistance. Current mode control provides fast transient response and cycle-by-cycle current limit.
The switching frequency of AP3440 can be programmable from 200kHz to 2MHz, which allows small-sized components, such as capacitors and inductors. A standard series of inductors from several different manufacturers are available. This feature greatly simplifies the design of switch-mode power supplies.
Under voltage lockout is internally set at 2.6V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage startup ramp is controlled by the soft-start pin. An open drain power good signal indicates the output is within 93% to 107% of its nominal voltage.
The AP3440 is available in U-QFN3030-16 package.
Application
- Low-voltage, High-density Power Systems
- Point of Load Regulation for High Performance DSPs, FPGAs, ASICs and Microprocessors
- Broadband, Networking and Optical Communications Infrastructure
Ordering Information
- AP3440FNTR-G1
U-QFN3030-16
- AP3440.pdf AP3440
