Diodes Incorporated

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3W High Power White LED Driver

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The PAM2803 is a set-up DC-DC converter that delivers a regulated output current. The device switches at a 1.0MHz constant frequency, allowing for the use of small value external inductor and ceramic capacitors. The PAM2803 is targeted to be used for driving loads up to 1A from a two-cell alkaline battery. The LED current can be programmed by the external current sense resistor, RS, connected between the feedback pin (FB) and ground. A low 95mV feedback voltage reduces the power loss in the Rs for better efficiency. With its internal 2A, 100mΩ NMOS switch, the device can provide high efficiency even at heavy load. During the shutdown mode, the feedback resistor RS and the load are completely disconnected and the current consumption is reduced to less than 1μA. The PAM2803 is available in the 6-lead TSOT26 package.


  • White LED Torch (Flashlight)
  • White LED Camera Flash
  • DSC(Digital Still Camera)Flash
  • Cellular Camera Phone Flash
  • PDA Camera Flash
  • Camcorder Torch(Flashlight) Lamp

Product Specifications

Product Parameters

AEC Qualified No
Compliance (Only Automotive supports PPAP) Standard
Topologies (Buck) No
Topologies (Buck-Boost) No
Topologies (Boost) Yes
Topologies (Charge Pump) No
Minimum Input Voltage (V) 0.9
Maximum Input Voltage (V) 5.5
Maximum Output Voltage (V) 5
Maximum LED Current (A) 1
Switching Frequency Maximum (kHz) 1
Dimming (PWM) Yes
Dimming (Analog) No
Efficiency (%) 90
Operating Temperature Range (°C) -40 to 85
Quiescent Current Typ (mA) 1
AEC-Q100 Grade No

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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