LM5017SD/NOPB

LM5017SD/NOPB is TI’s high-voltage buck regulator with an integrated high-side switch. It accepts a wide Vin (about 6–75 V) and outputs a user-adjustable lower voltage, suitable for automotive and industrial DC-DC applications.
Key points:
- Fixed-frequency, current-mode PWM control with protection features (overcurrent, thermal shutdown, hiccup on fault).
- Requires external components: inductor, Schottky diode (or synchronous FET alternative), input/output capacitors, and a feedback resistor divider to set Vout.
- Features: enable/shutdown pin, soft-start, and voltage/current limit protection.
- Packaging suffix:
- SD typically denotes the surface-mount package variant.
- NOPB means Pb-free (no lead) packaging.
Typical usage: design the external power tube with an appropriate L and D for ripple/current, choose R1/R2 to set Vout, connect EN high to enable, and follow datasheet application circuits and layout guidelines.
Note: Always consult the LM5017 datasheet for exact pinout, limits, and recommended external components.

Key features of LM5017SD/NOPB (high-voltage buck regulator):
- Wide input range: up to 100 V
- Integrated high-side N-channel MOSFET switch
- Current-mode control with fixed-frequency PWM operation
- External catch diode required; inductor and caps needed for buck topology
- Output adjustable via external feedback divider
- External compensation (COMP pin) for stability
- Enable/shutdown pin for power sequencing
- Soft-start to limit inrush
- Overcurrent/short-circuit protection and thermal shutdown
- Undervoltage lockout for reliable startup
- Compact 8-pin package (SDIP/NOPB variant; lead-free)
- Efficient, single-chip solution requiring few external components
Note: Typical external components include inductor, Schottky diode, input/output capacitors, and feedback/compensation network.

LM5017SD/NOPB is an 8-pin device (SO-8). It is a buck regulator with an internal switch. Pinout (typical, pin 1→pin 8):
- 1 EN/UVLO: Enable input and undervoltage lockout
- 2 FB: Feedback for output regulation
- 3 COMP: Error amplifier compensation
- 4 GND: Ground
- 5 SW: Switching node to inductor
- 6 VIN: Input supply
- 7 VCC: Internal regulator/bias supply
- 8 SS: Soft-start control
Provides typical external compensation and control for adjustable output.

- Manufacturer: Texas Instruments Incorporated (TI)
- What kind of company: An American multinational semiconductor company that designs and manufactures analog, power-management, and embedded processing integrated circuits.

LM5017SD/NOPB is a wide‑input, high‑efficiency buck regulator. Typical application areas:
- Point‑of‑load regulation for CPUs/GPUs/FPGA/DSP in servers, networking, and telecom equipment
- Automotive 12V power systems (infotainment, body electronics, sensors)
- Industrial power supplies, motor drives, and control electronics
- Consumer/commercial DC‑DC converters and adapters (5V/12V rails)
- Renewable/battery-powered systems (UPS, solar, portable devices)
It supports compact, efficient step-down conversion from higher input voltages with an integrated high‑side switch and external inductor.

LM5017SD/NOPB comes in an 8-pin SOIC package; RoHS-compliant with NOPB lead-free.