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The PAM2863 is a continuous mode inductive step-down converter, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The device operates from an input supply between 4.5V and 40V and provides an externally adjustable output current of up to 2A. Depending upon supply voltage and external components, this can provide up to 30 watts of output power. The PAM2863 includes the output switch and a high-side output current sensing circuit, which uses an external resistor to set the nominal average output current. Output current can be adjusted below the set value, by applying an external control signal to the VSET pin. The VSET pin will accept either a DC voltage or a PWM waveform. The soft-start time can be increased using an external capacitor from the VSET pin to ground. Applying a voltage of 0.2V or lower to the VSET pin turns the output off and switches the device into a low current standby state.


  • Simple Low Parts Count
  • Internal 40V NDMOS Switch
  • 2A Output Current
  • Single Pin On/Off and Brightness Control Using DC Voltage or PWM
  • Soft-Start
  • High Efficiency (up to 97%)
  • Wide Input Voltage Range: 4.5V to 40V
  • Output Shutdown
  • Open LED Protection
  • Short LED Protection
  • Up to 1MHz Switching Frequency
  • Typical 5% Output Current Accuracy
  • Pb-Free SOP-8(EP) Packages


  • High End LED Flashlight
  • LED Light Bar

Product Specifications

Product Parameters

AEC Qualified No
Compliance (Only Automotive supports PPAP) Standard
Topologies (Buck) Yes
Topologies (Buck-Boost) No
Topologies (Boost) No
Topologies (Charge Pump) No
Minimum Input Voltage (V) 4.5
Maximum Output Voltage (V) 40
Maximum LED Current (A) 2
LED Current Accuracy (%) 5
Switching Frequency Maximum (kHz) 1000
Dimming (PWM) Yes
Dimming (Analog) Yes
Efficiency (%) 97
Operating Temperature Range (°C) -40 to 85
Sense Voltage (mV) 100
AEC-Q100 Grade No

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Evaluation Boards and User Guides

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Orderable Part Number Buy from Distributor / Contact Sales Request Samples


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Arrow Electronics 893 10/3/2022 United States Buy Now
Arrow Electronics Central EU 5000 10/3/2022 Europe Buy Now
Farnell, An Avnet Company 11792 10/3/2022 England Buy Now
Mouser Electronics Inc. 32746 10/3/2022 South America, North America, Asia, Europe, Middle East Buy Now
Digi-Key Electronics 36516 10/2/2022 Europe, Asia, North America Buy Now
Future Electronics - Europe 22500 10/2/2022 England Contact Sales
RS Components - France 90 10/2/2022 France Buy Now
RS Components - Germany 65 10/2/2022 Germany Buy Now
RS Components - Spain 205 10/2/2022 Spain Contact Sales
RS Components - Spain 1780 10/2/2022 Spain Contact Sales
RS Components - UK 205 10/2/2022 England Buy Now
RS Components - UK 1780 10/2/2022 England Buy Now
RS Components S.p.A - Italy 85 10/2/2022 Italy Buy Now
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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