【Wide Voltage Input Range】 2.8V to 6V DC input; compatible with lithium batteries and 5V logic systems; supports stable operation under voltage fluctuations
【Adjustable Constant Current Output】 30mA to 1500mA constant current adjustable via external resistor; ±5% accuracy ensures consistent LED brightness across different applications
【Dual Dimming Modes for Flexible Control】 Supports PWM signal (≤20kHz) or resistance adjustment for dimming; Suitable for smart lighting and user-controlled brightness settings
【Low Power Standby and Thermal Protection】 Less than 260µA static current; built-in over-temperature modulation prevents overheating damage during prolonged use
【Reliable Performance in Wide Temperatures】 Operates from -40°C to +85°C; thermal enhanced SOP-8 package ensures reliable performance in harsh Settings

1. Product Parameters Parameters

Input Voltage: 2.8V-6V DC (Compatible with Lithium Battery/5V Logic Systems)

Output Current Range: 30mA-1500mA (Constant Current Adjustable, ±5% Accuracy)

Low Dropout Performance: [email protected](High Efficiency Conversion)

Static Working Current: ≤260μA (Low Standby Power Consumption)

Dimming Modes: PWM Signal (≤20kHz) or Resistance Adjustment

Operating Temperature: -40°C to +85°C (Reliable)

Protections: Over-Temperature Modulation (Auto Current Reduction @ ≥135°C Junction Temp), Output Short-Circuit Protection

2. Pin Functions ( )

VCC: Power Supply Positive (2.8V-6V DC). Decouple with 10μF electrolytic + 0.1μF ceramic capacitor (ripple

GND: Power Ground. Implement single-point star grounding with load to reduce noise.

ISET: Current Setting Terminal. Connect resistor RISET (≤30kΩ) to GND. Formula: ILED = 1800V / RISET. Use 1% precision metal film resistor.

CE: Enable Control Terminal. High (>2V) enables output; low (

LED: Output Terminal. Connect LED anode; cathode to ground. Ensure heat dissipation path for max 1.5A load.

3. FAQ

Q1: Output Current Unstable (>5% Fluctuation)?

Ensure RISET resistor is 1% precision metal film type and properly soldered. For PWM dimming, verify frequency ≤20kHz.

Q2: Module Overheats (>60°C)?

Reduce input-output voltage difference (optimally ≤3V). Increase PCB copper area (≥20mm²) for heat dissipation.

Q3: CE Dimming Not Responding?

Check PWM signal amplitude (>2V required) and frequency (must be ≤20kHz). Use 0V/5V logic level control or reduce frequency.

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