KA7630TS

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The KA7630TS is a multi-output positive voltage regulator in a 10-SIP H/S package. It provides fixed precision outputs of 5.1V and 8V at up to 0.5A each, and a 12V output at up to 1A with an external PNP transistor. The device includes a reset circuit for Output 1, TTL disable inputs for Outputs 2 and 3, and protection features such as current limit, thermal shutdown, overvoltage, and short circuit protection.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Provides three fixed precision output voltages: 5.1V, 8V, and 12V.
• Includes an internal reset circuit that generates a pulse when Output 1 drops below the regulated value.
• Outputs 2 and 3 can be disabled via TTL input signals.
• Integrates comprehensive protection including current limiting, thermal shutdown, overvoltage, and short circuit protection.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Multi-rail power supply systems requiring fixed voltage rails
• Circuit designs needing integrated reset signal generation
• Systems requiring TTL-controllable power rail disabling

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'TS' against the manufacturer's official documentation to confirm package type and temperature range specifications. Confirm availability status as the base part may be discontinued or superseded by newer revisions. Ensure the selected variant matches the required 10-SIP H/S package dimensions and pinout configuration for your PCB layout.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a single IC solution is needed for multiple fixed voltage rails (5.1V, 8V, 12V). Consider the need for an external PNP transistor if the full 1A current capability on the 12V rail is required. Evaluate the thermal performance within the 0°C to +125°C operating range and ensure adequate heat dissipation for the 1.5W power dissipation rating without a heatsink.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

The KA7630 is part of a family of multi-output regulators originally manufactured by Fairchild Semiconductor, now under onsemi. The KA7630 variant specifically provides an 8V output for the second channel, whereas the KA7631 variant provides a 9V output. Both share identical functionality regarding the 5.1V and 12V rails, reset logic, and protection features.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

The KA7631 is a direct functional substitute with a different Output 2 voltage (9V instead of 8V). Verify voltage requirements before substitution. No other public substitute part numbers are confirmed in the provided documentation.