# AP63203WU-7 (Component) ## Description 3.8V to 32V Input, 2A Low Quiescent Current Synchronous Buck Converter with Enhanced EMI Suppression The AP63200/AP63201/AP63203/AP63205 is a 2A, synchronous buck converter with a wide input voltage range of 3.8V to 32V and fully integrates a 125mΩ high-side power MOSFET and a 68mΩ low-side power MOSFET to provide high-efficiency step-down DC/DC conversion. The AP63200/AP63201/AP63203/AP63205 device is easily used by minimizing the external component count due to its adoption of peak current mode control along with its integrated compensation network. The AP63200/AP63201/AP63203/AP63205 has optimized designs for Electromagnetic Interference (EMI) reduction. The converter features Frequency Spread Spectrum (FSS) with a switching 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 further erases highfrequency radiated EMI noise caused by MOSFET switching. The device is available in a low-profile, TSOT26 package • VIN 3.8V to 32V • 2A Continuous Output Current • 0.8V ±1% Reference Voltage • 22µA Ultralow Quiescent Current • Switching Frequency o 500kHz: AP63200 and AP63201 o 1.1MHz: AP63203 and AP63205 • Pulse Width Modulation (PWM) Regardless of Output Load o AP63201 • Supports Pulse Frequency Modulation (PFM) o AP63200, AP63203, and AP63205 o Up to 80% Efficiency at 1mA Light Load o Up to 88% Efficiency at 5mA Light Load • Fixed Output Voltage o 3.3V: AP63203 o 5.0V: AP63205 • Proprietary Gate Driver Design for Best EMI Reduction • Frequency Spread Spectrum (FSS) to Reduce EMI • Precision Enable Threshold to Adjust UVLO • Protection Circuitry o Overvoltage Protection o Cycle-by-Cycle Peak Current Limit o Thermal Shutdown #CommonPartsLibrary #IntegratedCircuit #PowerManagement #Switching-regulator ## Component Details - **Owner:** lcsc - **Created:** 10/26/2024 - **Last Updated:** 5/28/2026 - **Visibility:** Public - **Part Type:** AC-DC Controllers & Regulators - **JLCPCB Part Class:** Extended Part - **Operating Voltage:** 4.5V to 60V - **Manufacturer Part Number:** AP63203WU-7 - **Package or Case Code:** TSOT-26_L2.9-W1.6-P0.95-LS2.8-BL - **Max Output Voltage:** 3.3V - **Operating Temperature:** -40 ~ +85℃ - **Max Input Voltage:** 3.8~32V - **Frequency:** 1100kHz - **Output Current:** 2A - **Datasheet URL:** https://www.diodes.com/assets/Datasheets/AP63200-AP63201-AP63203-AP63205.pdf - **IC Type:** Synchronous Buck Converter - **Symbol Style:** parametric-v1 - **Manufacturer Name:** DIODES(美台) - **LCSC Part Number:** C780769 - **Used in:** 557 projects ## Distributor Pricing (qty 1) *Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.* | Distributor | Unit Price (qty 1) | Stock | |------------|--------------------|-------| | [Arrow](https://www.arrow.com/en/products/ap63203wu-7/diodes-incorporated.html?utm_currency=USD&region=europe) | $0.2151 | 197K | | [Digi-Key](https://www.digikey.com/en/products/detail/diodes-incorporated/AP63203WU-7/9858426) | N/A | N/A | | [HQonline](https://www.hqonline.com/product-detail/dc-dc-power-supply-chips-diodes-ap63203wu-7-2500393013) | $0.44691 | 5.8K | | [LCSC](https://www.lcsc.com/product-detail/C780769.html) | $0.5593 | 31K | | [Mouser](https://www.mouser.com/en/ProductDetail/Diodes-Incorporated/AP63203WU-7?qs=u16ybLDytRZ1JqxbuLkMJw%3D%3D) | $0.82 | 4.7K | | [TME](https://www.tme.com/us/en-us/katalog/?queryPhrase=AP63203WU-7) | $1.11 | 3K | | [Verical](https://www.verical.com/pd/diodes-inc-dc-dc-converter-AP63203WU-7-11465203) | N/A | N/A | - **Part Type:** Integrated Circuits - **Sub-Type:** Logic - **Manufacturer:** Diodes - **MPN:** AP63203WU-7 - **Package / Case Code:** TSOT - **Pin Count:** 6 - **Operating Voltage:** 4.5V to 60V - **Frequency:** 1100kHz ## Pins | Pin | Name | Type | |-----|------|------| | 3 | VIN | | | 1 | FB | | | 2 | EN | | | 4 | GND | | | 6 | BST | | | 5 | SW | | --- *Generated from [https://www.flux.ai/lcsc/ap63203wu-7~j9cl](https://www.flux.ai/lcsc/ap63203wu-7~j9cl)*