Diodes Incorporated

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PAM2303 (Not Recommended for new design)

NRND = Not Recommended for New Design

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The PAM2303 is a 3A step-down DC-DC converter. It operates in two different modes: PSM and PWM modes. At light load, it automactically enters into the PSM mode to improve efficiency. At heavy load, the constant frequency PWM control performs excellent stability and transient response. No external compensation components are required. The PAM2303 supports a range of input voltages from 2.7V to 5.5V. The output voltage is adjustable from 0.6V to the input voltage. The PAM2303 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 PAM2303 delivers 3A maximum output current while consuming only 42μA of no-load quiescent current. Ultra-Low RDS(ON) integrated MOSFETs and 100% duty cycle operation make the PAM2303 an ideal choice for high-output voltage, high-current applications which require a low dropout threshold. The PAM2303 is available in SOP-8(EP), DFN3X3-10 and QFN3X3- 16 package.


  • 5V or 3.3V Point of Load Conversion
  • Telecom/Networking Equipment
  • Set Top Boxes
  • Storage Equipment
  • Video Cards
  • DDR Power Supply
  • Product Specifications

    Product Parameters

    Efficiency (%) 95
    Frequency Typ (Hz) 1500
    HS RDS(ON) (mΩ) 85
    LS RDS(ON) (mΩ) 60
    MaximumInput Voltage (V) 5.5
    MinimumInput Voltage (V) 2.7
    Output Current (mA) 3
    Output Voltage (V) ADJ(0.6 to VIN)
    Quiescent Current Typ (mA) 0.042
    Shutdown Current Typ (µA) 1
    Type Buck

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