AP3586B：降压控制器
| Part Number | Data Sheet | SPICE Model | Type | MinimumInput Voltage (V) | MaximumInput Voltage (V) | Output Voltage (V) | Frequency (Hz) | Efficiency (%) |
|---|---|---|---|---|---|---|---|---|
| AP3586B | AP3586A_B.pdf | - | Buck | 4.5 | 13.2 | 0.8 to ADJ | 300 Fixed | 90 |
Description
The AP3586A/B/C is a compact synchronous -rectified buck controller specifically designed to operate from 5V or 12V supply voltage and deliver high-quality output voltage as low as 0.6V (AP3586A) or 0.8V (AP3586B/C). This device operates at fixed 300kHz (AP3586A/B) or 200kHz (AP3586C) 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 highefficiency 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 solutions. The AP3586A/B/C is available in SOIC-8 and PSOP-8 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: 5V/12V
- VIN Input Range: 3.3V to 12V
- 0.6V/0.8V to 82% of VIN Output Range
- Internal Reference: 0.6V/0.8V
- Simple Single-loop Control
- Voltage-mode PWM Control
- Duty Cycle: 0% to 82%
- 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
SO-8
- AP3586A_B.pdf AP3586B
