Overview
The FPF3381UCX is an Over-Voltage Protection (OVP) device with an integrated ultra-low on-resistance single-channel switch, manufactured by onsemi. This device features an N-MOSFET that operates over an input voltage range of 2.8 V to 23 V and supports a maximum continuous current of 5 A. It is designed to protect downstream components from over-voltage conditions by immediately turning off the internal FET when the input voltage exceeds the over-voltage threshold. The FPF3381UCX also includes integrated ±110 V surge protection based on IEC61000-4-5 standards and is packaged in a small 12-bumps WLCSP package, operating over a temperature range of -40°C to +85°C.
Key Specifications
| Rating | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage Range | Vin | -0.3 | 28 | V | |
| Output Voltage Range | Vout | -0.3 | Vin + 0.3 | V | |
| Internal FET Continuous Current | IOUT | 0 | 6.25 | A | |
| Internal FET Peak Current | IPEAK | 7 | A | ||
| Maximum Junction Temperature | TJ(max) | 150 | °C | ||
| Storage Temperature Range | TSTG | -65 | 150 | °C | |
| ESD Capability, Human Body Model | ESDHBM | 4 kV | |||
| On-resistance of Power FET | rON | 15 | 25 | mΩ | |
| Thermal Shutdown Temperature | TSD | 130 | °C |
Key Features
- Over-voltage Protection Up to +28 V
- Integrated TVS: ±110 V for IEC61000-4-5
- Internal Low RDS(on) NMOS Transistors: Typical 15 mΩ
- Programmable Over-voltage Lockout (OVLO) via OVLO Pin
- Active-low Enable Pin (ENB) for Device Control
- Super-fast OVLO Response Time: Typical 40 ns
- Over Temperature Protection (Thermal Shutdown)
- Robust ESD Performance: ±4 kV Human Body Model (HBM), ±2 kV Charged Device Model (CDM)
- System Level ESD (IEC61000-4-2): ±10 kV Contact Discharge, ±15 kV Air Gap Discharge
Applications
- Mobile Phones
- PDAs
- GPS
Q & A
- What is the input voltage range of the FPF3381UCX?
The input voltage range is from 2.8 V to 23 V.
- What is the maximum continuous current supported by the FPF3381UCX?
The device supports a maximum continuous current of 5 A.
- What type of surge protection does the FPF3381UCX offer?
The device offers integrated ±110 V surge protection based on IEC61000-4-5 standards.
- How does the over-voltage protection work in the FPF3381UCX?
The internal FET is turned off immediately when the input voltage exceeds the over-voltage threshold to prevent damage to downstream components.
- What is the response time for the over-voltage lockout (OVLO) in the FPF3381UCX?
The OVLO response time is typically 40 ns.
- Does the FPF3381UCX have thermal shutdown protection?
- What is the package type and size of the FPF3381UCX?
The device is packaged in a 12-bumps WLCSP package with dimensions 1.828x1.288x0.574 mm.
- What are the typical applications for the FPF3381UCX?
Typical applications include mobile phones, PDAs, and GPS devices.
- How does the enable pin (ENB) control the FPF3381UCX?
The ENB pin is an active-low enable pin; when connected to a high level, the internal FET is turned off, and when connected to a low level, the FET is turned on as long as VIN is not higher than the over-voltage threshold.
- What is the role of the ACOKB pin in the FPF3381UCX?
The ACOKB pin is an open-drain output that indicates the power good condition by pulling down to ground when VIN is within the specified range.
