tps2420.pdf
| FEATURES | DESCRIPTION |
| . Integrated 30-m. Pass MOSFET . 3.0-V to 20-V Bus Operation . Programmable Fault Current | The TPS2420 provides highly integrated load protection for 3-V to 20-V applications. The TPS2420 protects loads, minimizes inrush current, and safely shuts down in the event of a fault. The programmable |
| . Programmable Hard Current Limit . Programmable Fault Timer . Internal MOSFET Power Limiting Foldback | fault current threshold starts the fault timer while allowing the current to pass to the load uninhibited. The programmable current limit threshold sets the maximum current allowed into the load, for both |
| . Latching and Auto-Retry Operation | inrush and severe load faults. Both events use the |
| . Analog Current Monitor Output . Powergood Output . Fault Output Indicator . 4 mm � 4 mm QFN | programmable timer which inhibits all current to the load when it expires. The dual protection thresholds are useful in applications such as disk drives. The start-up and seek currents are typically higher than the nominal |
| . .40�C to 125�C Junction Temperature Range | current and during this time the load needs a low |
| . UL Listed -File Number E169910 | impedance path to deliver the power. If a failure at the load occurs, the current limit does not allow the |
| APPLICATIONS | current to exceed the programmed threshold. This protects both the load and the integrity of the power |
| . RAID Arrays | supply. The internal MOSFET is protected by power |
| . Telecommunications . Plug-In Circuit Boards | limit circuitry which ensures that the MOSFET remains within its safe operating area (SOA) during all operating states. |
| . Disk Drives | The TPS2420 also allows the system to monitor load |
| currents with no need for a shunt in the power path. | |
| The gain of the current monitor can be scaled to the | |
| application. Fault and power good outputs are | |
| provided for improved system management and | |
| sequencing control. | |
| This device can be programmed to either latch-off or | |
| retry in the event of a fault. All of this functionality is | |
| | |
| packed into a 16-pin 4 � 4 mm QFN package. | |
| |
ABSOLUTE MAXIMUM RATINGS(1) (2)
over operating free-air temperature range (unless otherwise noted)
| VALUE | UNIT | ||
| VIN, VOUT | Voltage range | �0.3 to 25 | V |
| FLT, PG | Voltage range | �0.3 to 20 | |
| IFAULT, IMAX, CT | Voltage | 1.75 | |
| FLT, PG | Output sink current | 10 | mA |
| EN | Input voltage range | �0.3 to 6 | V |
| LTCH | Input current (LTCH internally clamped to 3 V) LTCH = 0 V | 35 | μA |
| Voltage range CT(3), IFLT(3), IMAX, IMON(3), LTCH | �0.3 to 3 | V | |
| ESD rating, HBM | 2500 | ||
| ESD rating, CDM | 400 | ||
| TJ | Operating junction temperature range | Internally Limited | °C |
| Tstg | Storage temperature range | �65 to 150 |
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to GND.
(3) Do not apply voltage to these pins.
DatasheetDoc-Texas Instruments TI pdf datasheet download
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