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The PAM2401 is a high efficiency, current mode, fixed frequency, step-up DC/DC converter with true output disconnect and inrush current limiting. The device includes one 0.10Ω N-channel MOSFET switch and one 0.15Ω P-channel synchronous rectifier. This product has the ability to simply program the output voltage from 2.5V to 5.0V.The switching frequency is 1.0MHz, programmable current limit set by an external resistor from 1.0A to 3.0A with internal soft-start. When loading became light, the converter will automatically enter into PSM to improve the efficiency.

Quiescent current is only 150μA during Pulse Skip Mode operation, maximizing battery life in portable applications. Other features include: <1μA shutdown, anti-ringing control, Hiccup mode at short protection, over voltage protection and over temperature protection.

The PAM2401 is available in MSOP-8 and U-DFN3030-12 packages.


  • Up to 95% Efficiency
  • True Output Disconnect
  • Inrush Current Limiting When Power On
  • Output Current up to 1000mA at VIN = 3V and VOUT = 5.0V
  • Fixed Frequency Operation Up to 1MHz
  • 0.9V to 4.75V Input Range
  • 2.5V to 5.0V Adjustable Output Voltage
  • Guaranteed 1.0V Start-Up
  • Programmable Current Limit
  • Internal Soft-Start
  • Internal Compensation
  • Pulse Sipping Mode at Light Load Operation
  • Hiccup Mode Short Protection
  • Over Voltage Protection
  • Over Temperature Protection
  • <1μA Shutdown Current
  • Power Good Indicator
  • MSOP-8 and U-DFN3030-12 packages
  • Totally Lead-Free & Fully RoHS Compliant 
  • Halogen and Antimony Free. “Green” Device


  • Handheld Computers
  • Cordless Phones
  • GPS Receivers
  • Battery Backup Supplies

Product Specifications

Product Parameters

MinimumInput Voltage (V) 0.9 V
MaximumInput Voltage (V) 4.75 V
Minimum Output Voltage (V) 2.5 V
Maximum Output Voltage (V) 5 V
HS RDS(ON) (mΩ) 150 mΩ
LS RDS(ON) (mΩ) 100 mΩ
Quiescent Current Typ (mA) 0.15 mA
Shutdown Current Typ (µA) 0.1 µA
Type Boost
Output Current (mA) 3 A
Frequency Typ (Hz) 1M Hz
Efficiency (%) 95 %

Related Content


Technical Documents

Evaluation Boards and User Guides

Recommended Soldering Techniques


Orderable Part Number Status Package Environmental Compliance Packing Buy from Distributor /
Contact Sales
Request Samples
Qty. Carrier
PAM2401SCADJ Active MSOP-8 TPGP 2500 T&R


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Arrow Electronics 1911 1/20/2022 United States Buy Now
Mouser Electronics Inc. 941 1/20/2022 South America, North America, Asia, Europe, Middle East Buy Now
Digi-Key Electronics 4447 1/19/2022 Europe, Asia, North America Buy Now
Farnell, An Avnet Company 1377 1/19/2022 England Buy Now
RS Components - Spain 4840 1/19/2022 Spain Contact Sales
RS Components - UK 4840 1/19/2022 England Buy Now
Request Sample
PAM2401YPADJ Active U-DFN3030-12 TPGP 3000 T&R Contact Sales Request Sample

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

PCN # Issue Date Implementation Date Subject
PCN-2512 2021-04-16 2021-07-16 Qualified Additional Assembly & Test (A/T) Site