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MP2269 | Wide Input 3.3V - 30V, 1A, 12µA IQ , Synchronous, Step-Down Converter with External Soft Start and Power Good in Small 2x3mm QFN Package | MPS
3.5A DC DC Step-Down Buck Converter Module 3V/3.3V/3.7V/5V/6V/7.5V/9V/12V Business & Industrial Power Regulators & Converters
DC 5V to 3.3V DC-DC Step-Down Power Supply Buck Module AMS1117 LDO 800MA | eBay
Monolithic Buck-Boost Converter Provides 1A at 3.3V without Schottky Diodes | Analog Devices
AP3429A 3.3V Buck Converter Breakout - 3.3V Output 1.2A Max : ID 4711 : $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits
DC Buck Step Down Converter 1.5V 1.8V 3.3V 2A Dual Voltage Output Power Supply | eBay
Mini560 Step-Down Stabilized Voltage Power Supply Module DC-DC Output – ImportedElectronics.com
TPS63001 data sheet, product information and support | TI.com
Auto Buck Boost DC DC 0.9 6V to 3.3V Step UP Step Down Converter Board Power Supply Module DD0603SA_3V3|power supply gateway|power suppliepower comb - AliExpress
Freeshipping DC/DC Converter dc 1.8V 3V 3.7V 5V to 3.3V dc Boost & Buck Step up down Regulated Charge Pump
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switching regulator - 3.3V Buck-boost converter outputting voltage too high - Electrical Engineering Stack Exchange
Pololu 3.3V, 500mA Step-Down Voltage Regulator D24V5F3