Overview
The FPF2702MPX, part of the AccuPower FPF270X series from onsemi, is a current-limit load switch designed to provide comprehensive protection to systems and loads from excess current conditions. This device features a slew-rate-controlled N-channel MOSFET and is optimized for preventing power bus disturbances caused by 'hot plugging' loads or momentary excess load demands. The input voltage range spans from 2.8 V to 36 V, and the minimum current limit is adjustable from 0.4 A to 2.0 A. The FPF2702MPX is particularly suited for applications requiring external fault management to coordinate the overload response.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VIN Operating Voltage | 2.8 | 36.0 | V | ||
| IQ Quiescent Current | VIN = 12 V, VON = 0 V, IOUT = 0 A | 92 | 140 | μA | |
| RON On Resistance | TA = 25°C, VIN = 12 V | 88 | 114 | mΩ | |
| Current Limit Range | 0.4 | 2.0 | A | ||
| Operating Temperature | -40 | 125 | °C | ||
| Package Type | WDFN8, SO8 |
Key Features
- Adjustable current limit from 0.4 A to 2.0 A through the ISET pin
- Slew rate controlled N-channel MOSFET to prevent power bus disturbances
- ESD protected above 2000 V HBM
- Thermal shutdown protection
- Active LOW enable via the ON pin
- Under-voltage lockout (UVLO) protection
- Power-good output and fault flag output (FLAGB)
- Lead and Halogen free, available in 8-lead MLP 3x3 mm and SO8 packages
Applications
- Motor Drives
- Digital Cameras
- Consumer Electronics
- Industrial Applications
- Computing and Hard Disk Drives
- Telecom Equipment
Q & A
- What is the input voltage range of the FPF2702MPX?
The input voltage range is from 2.8 V to 36 V.
- How is the current limit adjusted on the FPF2702MPX?
The current limit is adjustable from 0.4 A to 2.0 A through an external resistor connected between the ISET pin and GND.
- What type of MOSFET is used in the FPF2702MPX?
The device features a slew-rate-controlled N-channel MOSFET.
- What is the typical on-resistance of the FPF2702MPX?
The typical on-resistance is 88 mΩ at TA = 25°C and VIN = 12 V.
- How does the FPF2702MPX handle fault conditions?
The device sets the fault signal pin (FLAGB) LOW during a fault and immediately returns HIGH at the end of the fault condition. It is intended for use with external fault management).
- What are the package options for the FPF2702MPX?
The device is available in Lead and Halogen free, 8-lead MLP 3x3 mm and SO8 packages).
- What is the operating temperature range of the FPF2702MPX?
The operating temperature range is from -40°C to 125°C).
- How does the FPF2702MPX protect against thermal issues?
The device features thermal shutdown protection with a 30°C thermal hysteresis between thermal shutdown entry and exit temperatures).
- What is the purpose of the power-good output and fault flag output?
The power-good output and fault flag output (FLAGB) are used to monitor the status of the device, with FLAGB asserting LOW during a fault condition).
- What kind of protection does the FPF2702MPX offer against ESD?
The device is ESD protected above 2000 V HBM).
