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reference designAP61040 | Demoboard AP61040 EVM

Diodes Incorporated AP61040 | Demoboard AP61040 EVM

HIGH EFFICIENCY SYNCHRONOUS BUCK WITH ULTRALOW IQ

Overview

TopologyBuck Converter
Input voltage2.15-5.5 V
IC revision1

Description

The AP61040 is a low current synchronous buck converter providing high efficiency, excellent transient response and high DC output accuracy. The ultralow Iq of the AP61040 that make it ideal for applications such as fitness wearables, health monitoring, Bluetooth, and other handheld devices. The AP61040 regulator is optimized to operate with 2.2μH and 10μF output capacitor. The buck provides at least 400mA output current and input voltage range of 2.15V to 5.5V. The current control scheme handles wide input/output voltage ratios and provides low external component count with outstanding performance in line/load transient response and seamless transition between buck and 100% duty cycle modes. The AP61040 provides 3 programmable output voltages between 0.6V to 3.3V selectable by one selection pin. The AP61040 also features UVLO, OTP, and OCP to protect the circuit. This IC is available in a small 1.17mmx0.77mm, 6 balls WLCPS package.

Features

VIN 2.15V to 5.5VOutput Voltage Range: 0.6V to 5.5VThree Selectable Voltages between 0.6V, 2.5V, and 3.3V400mA Continuous Output Current, Efficiency up to 95%930nA Quiescent Current to Maximize Light-Load Efficiency1.1MHz Switching FrequencyProgrammable Operation Mode through ENPulse-Frequency ModulationPulse-Width Modulation Regardless of Output LoadFully Protected for Overcurrent, Short Circuit, Overtemperature, and Undervoltage LockoutTotally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)Halogen and Antimony Free. “Green” Device (Note 3)

Typical applications

  • Wearables, fitness trackers, health monitors, BLE devices, ULP applications

More information

Parts approved by Diodes Incorporated

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,30%(A)
RDC typ.(mΩ)
fres(MHz)
VOP(V)
Mount
SamplesAvailability & Sample
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74438366022
SPECWE-MAPI SMT Power Inductor, 2.2 µH, 7.4 A
Simu­lation
Availability
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Downloads10 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
Inductance2.2 µH
Performance Rated Current7.4 A
Saturation Current @ 30%12 A
DC Resistance23.7 mΩ
Self Resonant Frequency31.5 MHz
Operating Voltage80 V
MountSMT 
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