AP61041

Description

The AP61041 is a low-current, synchronous buck converter providing high efficiency, excellent transient response, and high DC output accuracy. The ultra-low IQ of the AP61041 makes it ideal for applications such as fitness wearables, health monitoring, Bluetooth, and other handheld devices. The AP61041 is optimized to operate with a 2.2µH inductor and 10µF input and output capacitors. The device provides a 400mA output current with an input voltage range of 2.15V to 5.5V.

The constant on-time control scheme handles wide input/output voltage ratios and provides a low external component count with outstanding performance in line and load transient responses. It also has seamless transitions between buck and 100% duty cycle modes.

The AP61041 provides two VSEL pins for programmable feedback voltages from 0.6V to 1.8V. The device also features undervoltage lockout (UVLO), overcurrent protection (OCP), and overtemperature protection (OTP) to protect the circuit.

This device is available in a small 1.17mm x 0.77mm, 6-ball, WLCSP package.

Feature(s)

• VIN 2.15V to 5.5V
• Preselected Output Voltages for Reduced Component Count
• 400mA Continuous Output Current, Efficiency Up to 95%
• 1.7µA (2.5µA Max) IQ to Maximize Light-Load Efficiency
• 1.1MHz Switching Frequency
• Pulse-Frequency Modulation
• Fully Protected from Undervoltage Lockout, Overcurrent, Short Circuit, and Overtemperature Conditions
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
• For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/

Application(s)

• Wearables
• Fitness trackers
• Smart watches
• Health monitors
• Bluetooth low-energy devices
• Ultra-low power applications
• Energy harvesting