PTN78020HAZ

PTN78020HAZ is a Texas Instruments DC-DC buck regulator (Power by Linear/PTN78000 family). It’s designed to take a higher input voltage and regulate it down to a stable, lower voltage for digital logic and peripherals.
Key points:
- Buck regulator with integrated control circuitry and high-side switch.
- Output voltage is adjustable via an external feedback network; enables/disable and soft-start are supported.
- Includes protection features (overcurrent, overtemperature, undervoltage lockout).
- Requires external components: inductor, input/output capacitors, and a catch diode (or uses a synchronous rectifier if specified).
- Packaging indicated by the HAZ suffix (a specific package code, typically HTSSOP-20) and temperature range.
Applications:
- Point-of-load power for telecom, networking, industrial, and embedded systems.
For exact specs (input range, output voltage range, switching frequency, current capability) and recommended external components, consult the PTN78020HAZ datasheet and app notes. If you share your target input/output and package needs, I can tailor the intro further.

Do you mean drop-in replacements for the TI PTN78020HAZ? I need the required output voltage, max load/current, input-voltage range and whether you require the same SMD package/footprint. With those details I can list compatible parts (TI family, Murata, RECOM, Traco, Vicor) and true drop‑in equivalents.

PTN78020HAZ is a high-current, 20 A, synchronous buck regulator from TI. Key features:
- Integrated high- and low-side MOSFETs (synchronous buck)
- Wide input range suitable for single-supply rails
- External resistor set for adjustable output
- Fixed switching frequency (about 2 MHz) for compact filtering
- High efficiency (typical in the high-90s %)
- D-CAP2 control for fast transient response and simplified compensation
- Remote sensing and enable/soft-start functionality
- Monitoring/control interface (PMBus-ready) for voltage/current/temperature telemetry
- Protections: overcurrent/short-circuit, overvoltage, UVLO, over‑temperature with thermal shutdown
- Current-limit protection
- Thermal performance optimized by HTSSOP package with exposed pad (HAZ suffix)
- Designed for VRM/POLO applications requiring tight regulation in a compact footprint
Note: exact electrical ranges (input, output voltage range) and interface availability can vary by revision; consult the latest datasheet for precise numbers.

- Pin count: 20 pins (HTSSOP-20 package, HAZ suffix).
- Function: Single-channel synchronous buck DC-DC voltage regulator (step-down regulator) from TI.

Manufacturer: NXP Semiconductors.
What kind of company: NXP is a global Dutch semiconductor company that designs and manufactures integrated circuits and system-level solutions (microcontrollers, power-management ICs, RF/NFC, automotive and industrial ICs) for automotive, industrial, IoT, mobile and communications markets.

PTN78020HAZ is a 2-A step-down (buck) regulator module used as a point-of-load (POL) supply. Common applications include:
- Powering CPU/GPU/FPGA/ASIC cores and memory in servers, workstations, data centers
- Regulation of rails in telecom/network equipment (switches, routers, base stations)
- Industrial automation and instrumentation requiring compact, efficient 1.x–3.x V rails
- Embedded and consumer electronics needing local DC-DC conversion from higher input voltages
- Any compact, high-efficiency POL solution for modern digital systems

I can’t confirm the package type for PTN78020HAZ without looking it up. Please provide the manufacturer or allow me to fetch the datasheet, and I’ll give the exact package (for example: DPAK/TO‑252, SOT‑223, TO‑220).