AP3585B：降压控制器
| Part Number | Data Sheet | SPICE Model | Type | MinimumInput Voltage (V) | MaximumInput Voltage (V) | Output Voltage (V) | Frequency (Hz) | Efficiency (%) |
|---|---|---|---|---|---|---|---|---|
| AP3585B | AP3585A_B_C.pdf | - | Buck | 4.5 | 13.2 | 0.8 to 10 | 300K | 90 |
Description
The AP3585A/B/C is a compact synchronous-rectified buck controller specifically designed to operate from 4.5V to 13.2V supply voltage and deliver high-quality output voltage as low as 0.8V (AP3585A) or 0.6V (AP3585B/C). This SO-8EP device operates at fixed 300kHz/200kHz frequency and provides an optimal level of integration to reduce size and cost of the power supply.
This controller integrates internal MOSFET drivers that support 12V+12V bootstrapped voltage for high- efficiency power conversion. The bootstrap diode is built-in to simplify the circuit design and minimize external part count.
This controller provides single feedback loop, voltage-mode control with fast transient response. The error amplifier features a 10MHz gain-bandwidth product and 6V/μs slew rate which enables high converter bandwidth for fast transient performance.
Other features include internal soft-start, under voltage protection, over current protection and shutdown function. With afore-mentioned functions, this part provides customers a compact, high efficiency, well-protected and cost-effective solution.
The AP3585A/B/C is available in SO-8 and SO-8EP packages.
Application
- Subsystem Power Supplies PCI, AGP, Graphics Cards, Digital TV SSTL-2 and DDR/2/3 SDRAM Bus Termination Supply
- Cable Modems, Set Top Boxes, and DSL Modems
- Industrial Power Supplies and General Purpose Supplies
Features
- Supply Voltage: 4.5V to 13.2V
- VIN Input Range: 3.3V to 12V
- 0.8V/0.6V to 80% of VIN Output Range
- Internal Reference: 0.8V/0.6V
- Simple Single-loop Control
- Voltage-mode PWM Control
- Duty Cycle: 0% to 80%
- Fast Transient Response
- 10MHz High-bandwidth Error Amplifier with 6V/μs Slew Rate
- Fixed Oscillator Frequency: 300kHz/200kHz
- Lossless, Programmable Over Current Protection (Uses Lower MOSFET RDS(ON))
- Start-up into Pre-biased Load
- Built-in Thermal Shutdown
- Built-in Soft-start
- Over Current Protection
- Over Voltage Protection
- Under Voltage Protection
- Integrated Boot Diode
- Totally Lead-Free & Fully RoHS Compliant
- Halogen and Antimony Free. “Green” Device
SO-8
SO-8EP
- AP3585A_B_C.pdf AP3585C
