Diodes Incorporated

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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 %

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Technical Documents

Evaluation Boards and User Guides

Recommended Soldering Techniques


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