TPS26610 Series
50-V, universal 4-20-mA, ±20-mA current loop protector
Manufacturer: Texas Instruments
Catalog(1 parts)
| Part | Package / Case | Supplier Device Package | Operating Temperature▲▼ | Operating Temperature▲▼ | Function | Voltage - Input▲▼ | Voltage - Input▲▼ | Mounting Type |
|---|---|---|---|---|---|---|---|---|
SOT-23-8 Thin, TSOT-23-8 | TSOT-23-8 | -40 °C | 125 °C | Current Regulator | 50 V | -50 V | Surface Mount |
Key Features
• ±50-V operating voltage, ±55-V absolute maximumIntegrated fixed bipolar 32-mA current limitAllows 2x current limit at start-up50% space savings compared to a typical discrete protection circuitLow R-on: 7.5-Ω typicalLow IQ(< 100 nA) – current drawn from loop when powered from external supplyProtection against miswiring conditions on IN and OUTProtection during signal line surge IEC61000-4-5 (with external TVS)Criteria-A EFT (IEC61000-4-4) immunity (with external TVS)Supports loop testing without supply (TPS26610 only)HART compliantEnable controlSGOODfor system health monitoringThermal shutdown±50-V operating voltage, ±55-V absolute maximumIntegrated fixed bipolar 32-mA current limitAllows 2x current limit at start-up50% space savings compared to a typical discrete protection circuitLow R-on: 7.5-Ω typicalLow IQ(< 100 nA) – current drawn from loop when powered from external supplyProtection against miswiring conditions on IN and OUTProtection during signal line surge IEC61000-4-5 (with external TVS)Criteria-A EFT (IEC61000-4-4) immunity (with external TVS)Supports loop testing without supply (TPS26610 only)HART compliantEnable controlSGOODfor system health monitoringThermal shutdown
Description
AI
The TPS2661x is a compact, feature-rich, fully integrated current loop protector suitable for analog inputs, analog outputs, sensor transmitters, HART inputs, and UART IO protection. The device provides universal input protection for ±20 mA, 0 mA to 20 mA, and 4 mA–20 mA. Low RONvalues of 7.5 Ω minimizes drop in the current loop, thereby extending operating range and supporting operation even with lower voltage power supplies. The device can withstand and protect the loads from positive and negative supply voltages up to ±50 V. The MODE pin allows flexibility to enable 2x current limit through the device to enable proper start-up of two wire transmitters. Device is capable of operating from an external bipolar supply as low as ± 2.25 V to ±20 V. The device can also be powered from unipolar supplies as low as 3 V to 30 V. The TPS26610 and TPS26613 feature loop power mode to facilitate loop testing in un-powered state without ±Vs supplies.
The device also protects the system from output side miswiring in analog outputs and sensor transmitters by turning off the current path. The internal robust protection control blocks along with the 50-V rating of the TPS2661x help to protect against surge (IEC61000-4-5) and EFT (IEC61000-4-4) transients for signal lines. The device greatly reduces system footprint by its 2.9-mm × 1.6-mm 8-pin SOT-23 package.
The TPS2661x is a compact, feature-rich, fully integrated current loop protector suitable for analog inputs, analog outputs, sensor transmitters, HART inputs, and UART IO protection. The device provides universal input protection for ±20 mA, 0 mA to 20 mA, and 4 mA–20 mA. Low RONvalues of 7.5 Ω minimizes drop in the current loop, thereby extending operating range and supporting operation even with lower voltage power supplies. The device can withstand and protect the loads from positive and negative supply voltages up to ±50 V. The MODE pin allows flexibility to enable 2x current limit through the device to enable proper start-up of two wire transmitters. Device is capable of operating from an external bipolar supply as low as ± 2.25 V to ±20 V. The device can also be powered from unipolar supplies as low as 3 V to 30 V. The TPS26610 and TPS26613 feature loop power mode to facilitate loop testing in un-powered state without ±Vs supplies.
The device also protects the system from output side miswiring in analog outputs and sensor transmitters by turning off the current path. The internal robust protection control blocks along with the 50-V rating of the TPS2661x help to protect against surge (IEC61000-4-5) and EFT (IEC61000-4-4) transients for signal lines. The device greatly reduces system footprint by its 2.9-mm × 1.6-mm 8-pin SOT-23 package.