AP43771FBZ-13

AP43771FBZ-13 is a power-management IC (PMIC) in the AP4377x family from Anpec Electronics. It is a compact, high-efficiency DC-DC buck regulator designed for portable electronics, integrating switching control, MOSFETs, and protection features in a small package (FBZ-13 variant).
Typical role
- Provides a stable output rail from a moderate input supply for processors, memory, or peripherals in battery-powered devices.
Common features (as in this family)
- Adjustable output via feedback resistors
- Enable/soft-start
- Overcurrent/short-circuit protection
- Over‑temperature protection
- High efficiency over wide load ranges
Applications
- Smartphones, tablets, wearables, IoT devices, and other compact power‑sensitive gadgets.
Note
- Exact specs (input range, output voltage, max current, pinout) depend on the specific device revision. If you share the datasheet or vendor, I can give a precise, detailed summary.

I can’t identify AP43771FBZ-13 without the manufacturer or datasheet. Please provide the chip’s function (LDO, regulator, MOSFET, op‑amp, etc.) plus key specs: input/output voltages, max current, package, and pinout. With that I’ll list drop‑in equivalents. Alternatively, use parametric searches on DigiKey/Mouser/Octopart or the manufacturer’s cross‑reference tool.

I don’t have the AP43771FBZ-13 datasheet memorized. Please share the manufacturer or a link to the datasheet and I’ll list the exact features.
For a typical AP4377x family regulator, you might expect:
- Fixed or adjustable output
- Input range from a few volts upward
- Output current around 0.5–2 A
- High-efficiency buck topology
- Enable/soft-start control
- Overcurrent/short-circuit protection
- Overtemperature protection
- UVLO/undervoltage protection
- Package options (e.g., 6–8 pin DFN/SOIC)
Provide the exact device or datasheet for precise, device-specific features.

Manufacturer: ANPEC Electronics Corp. (ANPEC).
What kind of company: A Taiwan-based fabless semiconductor company that designs and markets analog and mixed-signal ICs, specializing in power-management devices such as voltage supervisors, regulators, load switches, and other PMICs.

I can’t identify AP43771FBZ-13 without the manufacturer/datasheet. Please share the datasheet or source for precise application areas. Generally, AP-prefix power management ICs are used in:
- Portable electronics and IoT devices
- Wearables
- Automotive/electronics
- Consumer electronics
- Industrial/battery-powered equipment requiring DC-DC regulation and power sequencing