DongWoon Primary Agent DC to DC linear constant current drive IC DW8506A

The DW8506A from DONGWOON ANATECH is a low‑power linear LED constant current driver IC with a fixed 60mA output – no external resistor required. Utilizing advanced WLCSP (wafer‑level chip scale package), it reduces PCB footprint by over 70% compared to traditional SOT‑23 or SOT‑89 packages, with a thickness of only 0.45mm. It is ideal for space‑critical applications such as portable LED lighting, micro backlight modules, and wearable devices. The built‑in thermal fold‑back protection automatically reduces output current at high temperatures, preventing overheating damage. With its small size, low cost, and high reliability, the DW8506A is an excellent choice for low‑power LED driving.

DW8506A Ordering Information & Package Specifications

DW8506A Key Features & Advantages

• ● Wide input voltage range: 6.5V to 40V, compatible with 12V/24V industrial and automotive power systems

• ● Fixed 60mA constant current output – no external set resistor, further simplifies BOM

• ● Ultra‑low dropout voltage: 0.6V max @60mA, high efficiency, low heat dissipation

• ● Built‑in thermal fold‑back protection (140°C threshold), auto current reduction for long‑term reliability

• ● WLCSP wafer‑level package: only 0.94×0.85×0.45mm, ideal for high‑density assembly and space‑constrained designs

• ● No EMI interference, easily passes EMC tests

• ● Few pins (4 active pins) and ultra‑simple external circuitry, perfect for low‑power LED modules

DW8506A Key Electrical Specifications | Datasheet Parameters

DW8506A Pin Configuration & Package Dimensions | Pinout Diagram

Package Dimensions: WLCSP, 0.94mm × 0.85mm × 0.45mm, wafer‑level chip scale package, leadless design.

DW8506A Internal Block Diagram | Architecture

DW8506A Typical Application Circuits | Reference Designs

The circuits above cover basic constant current driving, multi‑chip parallel current expansion, and high‑voltage input step‑down extension. Since the DW8506A requires no external resistor, the application circuit is even simpler than adjustable models – ideal for micro LED modules with strict size and component count requirements.

DW8506A Applications | Target Markets

• ● Micro LED bulbs, portable lighting devices

• ● Signage and decorative LED lighting (light strips, luminous letter modules)

• ● Flat panel displays, smart home appliance panel backlighting

• ● RGB backlight LED driving (with PWM pre‑stage)

• ● Current regulators paired with DC/DC or AC/DC converters

• ● Automotive interior micro indicators, dashboard illumination

• ● Wearable devices, battery‑powered low‑power LED indicators

• ● General constant current sources, industrial sensor indicator lighting

DONGWOON Linear Constant Current LED Driver Solutions

Model / Parameter	DW8501	DW8502	DW8505A	DW8506	DW8506A	DW3505A
Input Voltage (V)	5~40	5~40	5~40	6.5~40	6.5~40	5~40
Output Current	≤1.5A adjustable	≤2.5A adjustable	≤100mA adjustable	≤100mA adjustable	Fixed 60mA	≤300mA adjustable
Dropout	0.3V@300mA	1V@1A	0.1V@60mA	0.5V@50mA	0.6V@60mA	0.2V@60mA
Dimming	PWM	PWM	PWM	--	--	PWM
Protection	Thermal fold‑back	Thermal fold‑back	Thermal fold‑back	Thermal fold‑back	Thermal fold‑back	Thermal fold‑back
Package	SOT223‑5L/TO252‑5L	TO263‑5L/TO220‑5L	SOT23‑5L	SOT23‑5L	WLCSP	SOT89‑5L
Typical Circuit

DW8506A Compatibility & Advantage Highlights

DONGWOON DW8506A offers ultra‑compact WLCSP packaging and fixed 60mA output, making it a great alternative to traditional SOT‑23 devices like BCR420U and BCR401W – especially for space‑limited designs. Key advantages over competing parts:

• ● Package size advantage: WLCSP (0.94×0.85mm) occupies only 1/10 the area of SOT‑23‑5L, with half the thickness

• ● No external resistor needed – simplifies BOM and lowers assembly cost

• ● Built‑in thermal fold‑back protection (BCR420U/BCR401W lack this), improving high‑temperature reliability

• ● Input voltage range 6.5~40V, better than BCR401W's ~18V, covering more industrial applications

• ● ±5% constant current accuracy, superior to ±10% of competitors, providing more stable current

DW8506A vs. Competing Models – Parameter Comparison

Brand & Distribution Service

GSMicro Semiconductor (Shenzhen) Co., Ltd. is an official authorized distributor of DONGWOON (Korea). We focus on linear constant current LED drivers and power management ICs, providing complete datasheets, application solutions, sample testing, and technical support to help customers achieve fast mass production. With warehouses in Shenzhen and Shanghai, we offer fast shipping.

Official website: https://www.gs-micro.com