Does this use pwn by itself or do you need to supply a pwn signal?

You need to supply a pwm signal, regulated current through adjustable resistor or PWM signal control

Does it need to be mounted on a heatsink? If so, how?

No need to install on the radiator The LED Constant Current Adjustable Module adopts the temperature regulation instead of temperature protection function, the temperature regulation can make the LED being turned on continuously in case of high ambient temperature or high voltage drop. When the LD06AJSA/B junction temperature reaches about 135 ° C, the internal temperature regulation block reduces the LED current so that the junction temperature will not rise any more. This feature allows the users to maximize the use of the power handling capability of the chip, do not worry about the chip overheating and damage to the chip or external components.

Can this board drive a 2.7v led at 350ma from a 5v input?

No. Minimum input is minimum output

What would be the advantage or disadvantage of using this board vs a single resistor when driving a single 3.6v while led from a 5v wall PS.

For a single LED, there's no advantage. With a regulated DC supply driving a single LED all you'd need is the appropriate value current limiter resistor for your LED.

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Adjustable Current LED Driver, DC 3.3V 3.7V 5V LED Driver 30-1500mA Constant Current Adjustable Module for LED Li-ion

Product ID: 243088800

Details

Brand
Pokerty
Current Rating
1.5 Amps
Mounting Type
PCB Mount
Power Source
Battery
Specification Met
CE FCC UL

⚡1.5A max current output

🔧Adjustable current 30-1500mA

🌡️Built-in temperature regulation

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€ 13.14

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Sold byAmazon NetherlandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💡 Power your LEDs like a pro — precision, protection, and performance in one sleek driver!

OVERCURRENT PROTECTION - Built-in safety block prevents LED current from exceeding 1.9A, protecting your setup.
ENERGY EFFICIENT SHUTDOWN - Chip enable function limits power draw to under 1µA when off, saving battery life.
PRECISION CURRENT CONTROL - Fine-tune LED brightness with a smooth potentiometer for perfect ambiance.
ROBUST THERMAL MANAGEMENT - Smart temperature regulation ensures continuous LED operation without overheating risks.
WIDE VOLTAGE COMPATIBILITY - Operates seamlessly from 2.8V to 6V, supporting multiple LED voltages including 3.3V, 3.7V, and 5V.

The Pokerty Adjustable Current LED Driver is a compact, PCB-mountable module designed for constant current regulation from 30mA up to 1.5A. Supporting input voltages between 2.8V and 6V, it efficiently drives 1 to 16 LEDs with integrated temperature regulation and overcurrent protection. Ideal for professional-grade LED projects, it balances high performance with energy-saving shutdown features, ensuring reliable and safe LED operation.

Specifications

ASIN	B07S9C5QF1
Best Sellers Rank	#250,242 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #366 in Lighting Low Voltage Transformers
Brand Name	Pokerty
Current Rating	1.5 Amps
Customer Reviews	4.3 4.3 out of 5 stars (43)
Item Weight	0.56 Grams
Manufacturer	Pokerty
Minimum Frequency	50 Hz
Model	Pokertyypgqkut91v
Mounting Type	PCB Mount
Part Number	Pokertyypgqkut91v
Power Source	Battery Powered
Specification Met	CE, FCC, UL
UPC	787015800688

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