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AP3401

1.5MHZ, 1A STEP-DOWN DC-DC BUCK CONVERTER

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Description

The AP3401 is a 1A step-down DC-DC converter. At heavy load, the constant-frequency PWM control performs excellent stability and transient response. No external compensation components are required.

The AP3401 supports a range of input voltages from 2.5V to 5.5V, allowing the use of a single Li+/Li-polymer cell, multiple Alkaline/NiMH cell, and other standard power sources. The output voltage is adjustable from 0.6V to the input voltage. The AP3401 employs internal power switch and synchronous rectifier to minimize external part count and realize high efficiency. During shutdown, the input is disconnected from the output and the shutdown current is less than 1μA. Other key features include over-temperature and short circuit protection, and under-voltage lockout to prevent deep battery discharge.

The AP3401 delivers 1A maximum output current while consuming only 40μA of no-load quiescent current. Ultra-low RDS(ON) integrated MOSFETs and 100% duty cycle operation make the AP3401 an ideal choice for high output voltage, high current applications which require a low dropout threshold.

The AP3401 is available in TSOT26, U-DFN2020-6 packages.

Feature(s)

  • Output Current: Up to 1A
  • Output Voltage: 0.6V to VIN
  • Input Voltage: 2.5V to 5.5V
  • 0.6V Reference Voltage With ±2% Precision
  • 40μA (Typ) No Load Quiescent Current
  • Shutdown Current: <1μA
  • 100% Duty Cycle Operation
  • 1.5MHz Switching Frequency
  • Internal Soft Start
  • No External Compensation Required
  • Current Limit Protection
  • Thermal Shutdown
  • TSOT26, U-DFN2020-6 Packages

Application(s)

  • Notebook PCs
  • TVs
  • Set-top-boxes
  • Networking Equipment

Product Specifications

Product Parameters

Type Buck
Efficiency (%) 95 %
HS RDS(ON) (mΩ) 250 mΩ
LS RDS(ON) (mΩ) 170 mΩ
Frequency Typ (Hz) 1500 kHz
MinimumInput Voltage (V) 2.5 V
MaximumInput Voltage (V) 5.5 V
Output Current (A) 1 A
Output Voltage (V) 0.6 to VIN V
Quiescent Current Typ (mA) 0.04 mA
Shutdown Current Typ (µA) 0.1 µA

Related Content

Packages

Technical Documents

Evaluation Board User Guides

Recommended Soldering Techniques

TN1.pdf

Orderable Part Number Status Package Environmental Compliance Packing Buy from Distributor /
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Qty. Carrier
AP3401DNTR-G1 Active U-DFN2020-6 TPGP 3000 T&R

AP3401DNTR-G1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Arrow Electronics Central EU 3000 10/4/2022 Europe Buy Now
Digi-Key Electronics 275939 10/4/2022 Europe, Asia, North America Buy Now
Mouser Electronics Inc. 53068 10/4/2022 South America, North America, Asia, Europe, Middle East Buy Now
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AP3401KTTR-G1 Active TSOT26 GREEN 3000 T&R

AP3401KTTR-G1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Avnet EU 18000 10/4/2022 Germany Buy Now
Digi-Key Electronics 161 10/4/2022 Europe, Asia, North America Buy Now
Farnell, An Avnet Company 1720 10/4/2022 England Buy Now
Mouser Electronics Inc. 10 10/4/2022 South America, North America, Asia, Europe, Middle East Buy Now
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Environmental Compliance Legend:
LFF: Pb-Free Finish and RoHS 5/6
TLFP: Totally Pb-Free Product and RoHS 6/6
LFGP: Pb-free Finish and Green Product, RoHS 5/6 and Halogen Free
TPGP: Totally Pb-Free and Green Product, RoHS 6/6 and Halogen Free
GREEN: Halogen-free and RoHS compliant
RoHS: RoHS compliant but NOT halogen-free

Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2512 2021-04-16 2021-07-16 Qualified Additional Assembly & Test (A/T) Site
PCN-2480 2020-10-21 2021-01-21 Additional Qualified (AT) Assembly Test Site SIMAT