Diodes Incorporated
U DFN3030 10

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PAM2308 (Obsolete)


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The PAM2308 is a dual step-down current-mode, DC-DC converter. At heavy load, the constant frequency PWM control performs excellent stability and transient response. To ensure the longest battery life in portable applications, the PAM2308 provides a powersaving Pulse- Skipping Modulation (PSM) mode to reduce quiescent current under light load operation. The PAM2308 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, USB, and other standard power sources. The dual output voltages are available for 3.3V, 2.8V, 2.5V, 1.8V, 1.5V, 1.2V or adjustable. All versions employ 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 0.1μA. Other key features include under-voltage lockout to prevent deep battery discharge.


  • Cellular Phone
  • Portable Electronics
  • Personal Information Appliances
  • Wireless and DSL Modems
  • MP3 Players
  • Product Specifications

    Product Parameters

    Compliance(Only Automotive supports PPAP) Standard
    Efficiency (%) 96
    Frequency Typ (Hz) 1500
    Frequency Typ (kHz) 1500
    HS RDS(ON) (mΩ) 300
    HS RDS(ON) (mΩ) 300
    LS RDS(ON) (mΩ) 350
    LS RDS(ON) (mΩ) 350
    MaximumInput Voltage (V) 5.5
    Maximum Input Voltage (V) 5.5
    Maximum Output Voltage (V) VIN
    MinimumInput Voltage (V) 2.5
    Minimum Input Voltage (V) 2.5
    Minimum Output Voltage (V) 0.6
    Output Current (mA) 1
    Output Current (A) 1
    Output Voltage (V) ADJ(0.6 to VIN)
    Quiescent Current Typ (mA) 0.04
    Quiescent Current Typ (µA) 40
    Shutdown Current Typ (µA) 0.1
    Shutdown Current Typ (µA) 0.1
    Type Buck

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    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