NCP164AMTADJTAG

NCP164AMTADJTAG is an ON Semiconductor buck (step-down) regulator in the NCP164 family. It integrates the power switch and control logic to provide a compact, high-efficiency DC-DC converter for battery-powered or space-constrained designs. The “ADJ” suffix means the output voltage is adjustable with an external resistor divider; “AMTADJ” denotes a specific package/variant. The “JTAG” in the name is not an interface you typically use—check the datasheet for the exact pinout.
Key points:
- Input range and output: suitable for low- to mid-voltage rails with adjustable output.
- Control: fixed-frequency current-mode PWM; enables soft-start and protection features.
- Protections: overcurrent/short-circuit and thermal shutdown.
- Efficiency: high efficiency with compact external components.
External parts typically needed: inductor, input/output capacitors, catch diode or synchronous FET, and feedback resistors (plus any compensation network).
Applications: portable devices, wearables, IoT sensors, compact power supplies.
For exact specs, pinout, and recommended operating conditions, consult the latest NCP164AMTADJJ/J datasheet.

Pin count: 8 pins.
Function: Single‑channel adjustable buck DC‑DC converter. It accepts VIN, uses an internal switch at the LX/SW node to drive an external inductor and output capacitor, and regulates VOUT via an external feedback divider to the FB pin. Includes enable/shutdown control (EN) and ground (GND); remaining pins are typically NC or for auxiliary functions per the package variant. The device is designed to convert a higher input voltage to a lower, adjustable output using an external feedback network. For exact pinout, refer to the datasheet.

Manufacturer: ON Semiconductor (ON Semiconductor Corp.).
What kind of company: An American multinational semiconductor company that designs, manufactures, and markets energy-efficient integrated circuits and power-management devices for automotive, industrial, and consumer applications.

ON Semiconductor NCP164AMTADJ is an adjustable, high-efficiency buck regulator. Applications:
- Portable and battery-powered devices needing a compact, efficient step-down regulator (0.8–5V outputs, up to a few hundred mA)
- Point-of-load regulation for microcontrollers, DSPs, FPGAs in consumer electronics
- Power supplies for set-top boxes, TVs, monitors, routers, and other home appliances
- Automotive and industrial equipment using higher rails (e.g., 12–24V) to lower rails
- Embedded systems requiring a small, low-quiescent-current buck regulator in a compact package

NCP164AMTADJTAG is an 8-pin MSOP (small-outline) package. Note: some sources list an 8-pin SOIC variant; always confirm the exact footprint in the specific datasheet for your lot.