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FPF2143 − Full Function Load Switch with Reverse Current Blocking
The FPF2140/42/43/44/46/47 is a series of load switches which provides full protection to systems and loads which may encounter large current conditions. These devices contain a 0.11Ω current-limited P-channel MOSFET which can operate over an input voltage range of 1.8-5.5V. Internally, current is prevented from flowing when the MOSFET is off and the output voltage is higher than the input voltage. Switch control is by a logic input (ON) capable of interfacing directly with low voltage control signals. Each part contains thermal shutdown protection which shuts off the switch to prevent damage to the part when a continuous over-current condition causes excessive heating. When the switch current reaches the current limit, the part operates in a constant-current mode to prohibit excessive currents from causing damage. For the FPF2140/42/44/46, if the constant current condition still persists after 30ms, the part will shut off the switch and pull the fault signal pin (FLAGB) low. The FPF2140/44 have an auto-restart feature which will turn the switch on again after 450ms if the ON pin is still active. The FPF2142/46 do not have this auto-restart feature so the switch will remain off until the ON pin is cycled. For the FPF2143/47, a current limit condition will immediately pull the fault signal pin low and the part will remain in the constant-current mode until the switch current falls below the current limit. The minimum current limit is 200mA for the FPF2140/42/43 while that for the FPF2144/46/47 is 400mA. These parts are available in a space-saving 6 pin 2X2 MLP package.
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Product Status/Pricing/Packaging
| Product | Product & Eco Status | *Pricing | Packaging & Packing Info | **Package Marking Convention | Qualification Support | Compliance Certificates |
|---|---|---|---|---|---|---|
| FPF2143 |
Full Production Green as of Aug 2006 |
$0.479 | MLP 2x2 6L (MicroFET) Details TAPE REEL |
Line 1:&E (Space) &Y (Binary Calendar Year Coding) Show more... |
ESD (CDM) :
2000
V ESD (HBM) : 4000 V RTHETA (JA) : 86 °C/W Show more... |
- Fairchild 1,000 piece Budgetary Pricing. *
- If there is no sample button displayed at the top of the page, please contact one of the Fairchild distributors or your local sales office to obtain samples.
- Top mark packaging information for product FPF2143 is available. **
Features
- 1.8 to 5.5V Input Voltage Range
- Controlled Turn-On
- 200mA and 400mA Current Limit Options
- Undervoltage Lockout
- Thermal Shutdown
-
2µA Shutdown Current - Auto Restart
- Fast Current limit Response Time
- 5µs to Moderate Over Currents
- 30ns to Hard Shorts
- Fault Blanking
- Reverse Current Blocking
- Power Good Function
- RoHS Compliant
Applications
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Application Notes
| Application Note | Description |
|---|---|
| AN-8019SC | Reliable USB Modem Design Using the Combination of an Integrated Load Switch and a Buck Converter (Chinese Translation)(475 K) 03-Mar-2011 |
| AN-8019 | Reliable USB Modem Design Using the Combination of an Integrated Load Switch and a Buck Converter(293 K) 04-Apr-2013 |
| AN-8020 | Integrated Slew Rate Controlled Switch Optimizing 1V Core in Mobile Systems(400 K) 03-Mar-2011 |
| AN-9047 | Assembly Guidelines for MicroFET-6 Packaging(790 K) 05-Mar-2011 |
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