Name: SPJ-11-256
Brand: Forever Bright Engine
SKU: fb-ps11
Availability: InStock

This product is a high-precision, high-reliability LED driver power supply designed for LED light sources with specifications of 3–9V. It adopts advanced constant-current and constant-voltage control technology to ensure stable current and voltage supply to the LED light source, providing uniform brightness output and long-life operation. The product includes multiple protection features such as over-temperature and open-circuit protection, offering comprehensive safety for LED lighting systems.

New Sleek Design

PS11-256
PS11-450

Input
parameter:	AC 8V ~ 18V
Input Frequency Range	50Hz ~ 60Hz
Input Current	Max. 500 mA (at AC 8V input)
Power Factor	≥ 0.9 (at rated input voltage and rated load)
output
Output Voltage Range	DC 3V ~ 12V
Output Current	Constant 466 mA (±5%)
Output Power	Max. 4.2 W (at output voltage 12V; 466 mA × 9V light source = 4.2 W) When input is 12 VAC (light source 6V) × 333 mA = 2 W When input is 12 VAC (light source 3V) × 466 mA = 1.39 W
Voltage Regulation	≤ ±2% (within input voltage and load variation range)
Current Regulation	≤ ±5% (within input voltage and load variation range)
Ripple & Noise	≤ 100 mVp-p (at rated output voltage and current, 20 MHz bandwidth)
Protection features
Over-Temperature Protection	When the internal chip temperature exceeds 120°C, the driver automatically reduces the output current or shuts down output to prevent damage.
Open-Circuit Protection	When the output is open-circuited, the driver enters a protection state and stops output current to avoid excessive voltage that may damage other components.
Short-Circuit Protection	When the output is short-circuited, the driver automatically limits the output current or shuts down output to prevent excessive current that could damage the chip or LED light source.
Environmental Requirements
Operating Temperature Range	- 20°C ~ +60°
Storage Temperature Range	-40°C ~ +85°C
Relative Humidity	10% ~ 90% (non-condensing)
Operating Altitude	Up to 2000 meters

Resources:
SPJ-11-256 Specification Sheet (download)
SPJ-11-450 Specification Sheet (download)

Voltage Drop Formula

SPJ-11-256

Input

parameter:

AC 8V ~ 18V

Input Frequency Range

50Hz ~ 60Hz

Input Current

Max. 500 mA (at AC 8V input)

Power Factor

≥ 0.9 (at rated input voltage and rated load)

output

Output Voltage Range

DC 3V ~ 12V

Output Current

Constant 466 mA (±5%)

Output Power

Max. 4.2 W (at output voltage 12V; 466 mA × 9V light source = 4.2 W)

When input is 12 VAC (light source 6V) × 333 mA = 2 W

When input is 12 VAC (light source 3V) × 466 mA = 1.39 W

Voltage Regulation

≤ ±2% (within input voltage and load variation range)

Current Regulation

≤ ±5% (within input voltage and load variation range)

Ripple & Noise

≤ 100 mVp-p (at rated output voltage and current, 20 MHz bandwidth)

Protection features

Over-TemperatureProtection

When the internal chip temperature exceeds 120°C, the driver automatically reduces the output current or shuts down output to prevent damage.

Open-Circuit Protection

When the output is open-circuited, the driver enters a protection state and stops output current to avoid excessive voltage that may damage other components.

Short-Circuit Protection

When the output is short-circuited, the driver automatically limits the output current or shuts down output to prevent excessive current that could damage the chip or LED light source.

Environmental Requirements

Operating Temperature Range

- 20°C ~ +60°

Storage Temperature Range

-40°C ~ +85°C

Relative Humidity

10% ~ 90% (non-condensing)

Operating Altitude

Up to 2000 meters

Max. 500 mA
(at AC 8V input)

Over-Temperature
Protection