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Thank you for your help enclose Memorize current sink led driver Parameters stay Boil

STP16CPC05MTR_Typical Application Reference Design | General LED Driver |  Arrow.com
STP16CPC05MTR_Typical Application Reference Design | General LED Driver | Arrow.com

BJT Constant Current Driver - YouTube
BJT Constant Current Driver - YouTube

Driving Low-Current LEDs
Driving Low-Current LEDs

RT8301 - 8-CH Constant Current LED Driver for Display Backlight | Richtek  Technology
RT8301 - 8-CH Constant Current LED Driver for Display Backlight | Richtek Technology

RT8302A - 60V, 4-CH, Programmable Current Sink LED Driver for 1D/2D/3D  Dimming Applications | Richtek Technology
RT8302A - 60V, 4-CH, Programmable Current Sink LED Driver for 1D/2D/3D Dimming Applications | Richtek Technology

operational amplifier - Precision Current Sink for LED Modulation -  Electrical Engineering Stack Exchange
operational amplifier - Precision Current Sink for LED Modulation - Electrical Engineering Stack Exchange

LED Driver 10 Click
LED Driver 10 Click

AL5802_Typical Application Reference Design | General LED Driver | Arrow.com
AL5802_Typical Application Reference Design | General LED Driver | Arrow.com

Low-Voltage Current Sink Controls High-Voltage LED String | Analog Devices
Low-Voltage Current Sink Controls High-Voltage LED String | Analog Devices

Driving LEDs with Constant Current Port Expander Outputs | Analog Devices
Driving LEDs with Constant Current Port Expander Outputs | Analog Devices

2.7-6.0V 350mA Constant Sink Current Low Dropout Voltage LED Driver LDO  Zener | eBay
2.7-6.0V 350mA Constant Sink Current Low Dropout Voltage LED Driver LDO Zener | eBay

I/O Interfacing with current source and sink pins · One Transistor
I/O Interfacing with current source and sink pins · One Transistor

10x mimi DC 3-6.0V 260/350mA Constant Sink Current Low Dropout Voltage LED  Driver
10x mimi DC 3-6.0V 260/350mA Constant Sink Current Low Dropout Voltage LED Driver

LP5024 data sheet, product information and support | TI.com
LP5024 data sheet, product information and support | TI.com

SC620 | Current Sink LED Driver for 8 BL + I2C Interface | Semtech
SC620 | Current Sink LED Driver for 8 BL + I2C Interface | Semtech

microcontroller - BJT Constant current LED driver - Electrical Engineering  Stack Exchange
microcontroller - BJT Constant current LED driver - Electrical Engineering Stack Exchange

LED multi string linear constant current sink 02 - CircuitLab
LED multi string linear constant current sink 02 - CircuitLab

led - Low loss current sink - Electrical Engineering Stack Exchange
led - Low loss current sink - Electrical Engineering Stack Exchange

Current regulators: (a) amplifier-boosted current sink with external... |  Download Scientific Diagram
Current regulators: (a) amplifier-boosted current sink with external... | Download Scientific Diagram

10x mimi DC 3-6.0V 260/350mA Constant Sink Current Low Dropout Voltage LED  Driver Module
10x mimi DC 3-6.0V 260/350mA Constant Sink Current Low Dropout Voltage LED Driver Module

I have a PNP BJT and an LED driver (current sink, theoretically 20 mA and  max 3.3 V). The LED driver is connected through an LED to the base of the  BJT.
I have a PNP BJT and an LED driver (current sink, theoretically 20 mA and max 3.3 V). The LED driver is connected through an LED to the base of the BJT.

Current regulators: (a) amplifier-boosted current sink with external... |  Download Scientific Diagram
Current regulators: (a) amplifier-boosted current sink with external... | Download Scientific Diagram

I/O Interfacing with current source and sink pins · One Transistor
I/O Interfacing with current source and sink pins · One Transistor