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Diodes Incorporated AP64501 | Demoboard AP64501SP-EVM
40V, 5A, Low IQ, Synchronous DC/DC Buck Converter with Programmable Soft-Start Time
Overview
| Topology | Buck Converter |
| Input voltage | 3.8-40 V |
| Output 1 | 5 V / 5 A |
| IC revision | 1.1 |
Description
The AP64501 is 5A, synchronous buck converter with a wide input voltage range of 3.8V to 40V. The device fully integrates a 45mΩ high-side power MOSFET and a 20mΩ low-side power MOSFET to provide high-efficiency step-down DC/DC conversion.The AP64501 device is easily used by minimizing the external component count due to its adoption of peak current mode control.The AP64501 design is optimized for Electromagnetic Interference (EMI) reduction. The converter features Frequency Spread Spectrum (FSS) with aswitching frequency jitter of ±6%, which reduces EMI by not allowing emitted energy to stay in any one frequency for a significant period of time. It also has a proprietary gate driver scheme to resist switching node ringing without sacrificing MOSFET turn-on and turn-off times, which reduces high-frequency radiated EMI noise caused by MOSFET switching.The device is available in a SO-8EP package.
Features
- Wide Input Range: 3.8V to 40V
- 5A Continuous Output Current
- 0.8V ±1% Reference Voltage
- 25μA Ultralow Quiescent Current (Pulse Frequency Modulation)
- 570kHz Switching Frequency
- Programmable Soft-Start Time
- Proprietary Gate Driver Design for Best EMI Reduction
- Frequency Spread Spectrum (FSS) to Reduce EMI
- Low-Dropout (LDO) Mode
- Precision Enable Threshold to adjust UVLO
- Protection Circuitry
- Under voltage Lockout (UVLO)
- Output Overvoltage Protection (OVP)
- Cycle-by-Cycle Peak Current Limit
- Thermal Shutdown
- Totally Lead-Free & Fully RoHS Compliant
- Halogen and Antimony Free. “Green” Device
Typical applications
- General Purpose Point of Load
- Network Systems, Optical Communication and Networking Systems
- White Goods and Small Home Appliances, Home Audio, Consumer Electronics
- 5V, 12V, and 24V Distributed Power Bus Supplies
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | DF(%) | RISO | Ceramic Type | L(mm) | W(mm) | H(mm) | Fl(mm) | Packaging | L(µH) | IR(A) | ISAT(A) | RDC max.(mΩ) | fres(MHz) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 25 V(DC), 10 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 25 V(DC) | Capacitance10 nF | Capacitance±10% | Rated Voltage25 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor3.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 100 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance100 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor3 % | Insulation Resistance5 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | |||||
 | WE-PDF SMT Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PDF SMT Power Inductor | – | – | – | Size1045 | Operating Temperature -40 °C up to +150 °C | – | – | – | Length10.2 mm | Width10.2 mm | Height4.2 mm | – | – | Inductance3.6 µH | Rated Current8.2 A | Saturation Current8.5 A | DC Resistance12.2 mΩ | Self Resonant Frequency55 MHz | MountSMT |