AP61040 DIODES | Alldatasheet
Document overview
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Technical content
www.diodes.com Announcement New Product diodes.com The AP61040 and AP61041 are low- current, synchronous buck converters providing high efficiency, excellent transient responses, and high output accuracy. Their ultra-low IQ make them ideal for portable consumer applications such as fitness wearables, health monitors, and other handheld devices. The AP61040 and AP61041 are optimized to operate with a 2.2µH inductor and 10µF input and output capacitors. The buck converters provide a 400mA output current across an input voltage range of 2.15V to 5.5V. The constant on-time (COT) control scheme handles wide input/output voltage ratios and provides a low external component count with an outstanding performance in line and load transient responses. It also has seamless transitions between buck and 100% duty cycle modes. The AP61040 provides three programmable output voltages between 0.6V to 3.3V, selectable by one selection pin. The AP61041 provides two VSEL pins for programmable feedback voltages from 0.6V to 3.3V. The devices also feature UVLO, OCP, and OTP to protect the circuit. The AP61040 and AP61041 are available in the tiny, 1.17mm x 0.77mm, 6-ball X1-WLB1208-6 package. The Diodes logo is a registered trademark of Diodes Incorporated in the United States and other countries. All other trademarks are the property of their respective owners. © 2026 Copyright Diodes Incorporated. All Rights Reserved. Tiny, Ultra-Low IQ, 400mA COT, Synchronous Buck Converters Increase Operating Battery Life in Portable Devices AP61040 AP61041
Applications
▪ Wearables ▪ Fitness trackers ▪ Action cameras ▪ Smart glasses ▪ Smart watches ▪ Bluetooth low-energy devices The DIODES Advantage The AP61040 and AP61041 provide high-efficiency DC-DC solutions to extend the battery life of portable consumer applications. ▪ Low 930nA Quiescent Current, IQ Maximizes light-load efficiency ▪ Selectable Output Voltages ▪ AP61040 has a VSEL1 pin for programmable VOUT (0.6V to 3.3V) with ±1% ▪ AP61041 has two VSEL1 and VSEL2 pins for programmable VOUT (0.6V to 1.8V) with ±1 ▪ Protection Functions Provides overcurrent, short-circuit, overtemperature, and undervoltage lockout protections ▪ High 1.1MHz Operating Frequency Reduces the size and value of passive components January 2026
www.diodes.com Announcement New Product diodes.comdiodes.com 5.5V DC-DC Buck Converter Portfolio
Ordering Information
Typical Application Schematics Orderable Part Number Compliance (Only Automotive Supports PPAP) Package Package Code Moisture Sensitivity Packing Quantity Carrier AP61040CP6-7 Standard X1-WLB1208-6 CP6 MSL-1 3,000 7" Tape & Reel AP61041CP6-7 Standard X1-WLB1208-6 CP6 MSL-1 3,000 7" Tape & Reel Part Number VIN Range Vout Range Output Current RDS(ON) HS / LS Mode Power Good Switching Frequency IQ Junction Temp. Package V V A mΩ MHz µA C Efficiency vs. Output Current January 2026 AP61040 AP61041