NCP5663DSADJR4G

NCP5663DSADJR4G is an ON Semiconductor part in the NCP LED-driver family. It’s a compact, high‑efficiency IC designed to drive LEDs with a constant current from a relatively low to moderate input voltage, simplifying LED backlight and indicator applications.
Key points
- Function: Constant-current LED driver with integrated regulation and protection features.
- Dimming: Supports external dimming (PWM or analog) to adjust LED brightness.
- Protections: Overcurrent/short-circuit protection and thermal shutdown.
- Packaging: Small surface-mount package; DSADJR4G suffix encodes packaging/revision details.
- Applications: LCD backlights, automotive dashboards, signage, portable devices.
Why choose it
- Reduces BOM and design time by integrating regulation and protection in a single IC.
- Provides predictable LED current and easier thermal management.
Note
- For exact specs (LED current range, input voltage range, dimming method, efficiency, pinout, and thermal data), consult the official datasheet on onsemi.com or your distributor. The suffix DSADJR4G specifies packaging and revision details.

Here are the typical features of the NCP5663DSADJR4G (ON Semiconductor) LED driver/DC-DC regulator family:
- Integrated high-side switching regulator for efficient constant-current LED drive
- External sense resistor sets LED current (constant-current output)
- Dimming options: PWM dimming and analog dimming/input for brightness control
- Wide input voltage range suitable for portable and automotive applications
- Protection: overcurrent/short-circuit protection, thermal shutdown, undervoltage lockout
- Soft-start to limit inrush and avoid LED current surges
- High efficiency operation (typical) due to integrated switch
- Fault/status reporting and enable/shutdown control
- Small package footprint (DSA/JR4G variant specifies package)
- Suitable for driving single or string LED configurations with simple external components
Note: exact electrical specifications (voltages, current range, switching frequency) vary by variant. For precise numbers, consult the ON Semiconductor datasheet for NCP5663DSADJR4G.

DSA package (On Semiconductor’s DSA 8-pin package).

Pin count: 16 pins.
Function: NCP5663DSADJR4G is an LED driver controller (16-pin) with current-regulated output for automotive/LED applications; it typically regulates LED current via feedback and requires an external MOSFET. Please verify with the official datasheet for exact configuration.

- Manufacturer: ON Semiconductor (ON Semi).
- What kind of company: A global semiconductor company that designs, manufactures, and sells integrated circuits and discrete components, including power management and analog devices. It’s a publicly traded multinational headquartered in the United States.

NCP5663DSADJR4G is a high-efficiency, constant-current LED driver IC (adjustable current) for white LEDs. Applications include LED backlighting for LCDs/monitors, signage and architectural lighting, automotive interior lighting, portable/battery-powered LED lighting, and general purpose dimmable LED lighting in consumer electronics.