The TPS20xxB power-distribution switches are intended for applications which encounter heavy capacitive loads and short circuits. These devices incorporates 70mΩ N-channel MOSFET power switches for power-distribution systems that require multiple power switches in one package. A logic enable input controls each switch. Gate drive is provided by an internal charge pump designed to control the power-switch rise times and fall times to minimize current surges during switching. The charge pump requires no external components and allows operation from supplies as low as 2.7V.
When the output load exceeds the current-limit threshold or a short is present, the device limits the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx) logic output low. When continuous heavy overloads and short circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry establishes that the switch remains off until valid input voltage is present. This power-distribution switch is designed to set current limit at 1A (typical).
| Top-Dokumentation | Typ | Titel | Format-Optionen | Neueste englische Version herunterladen | Datum |
|---|---|---|---|---|---|
| * | Datenblatt | TPS20xxB Current-Limited, Power-Distribution Switches datasheet (Rev. Q) | PDF | HTML | 27.10.2026 |
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