CS8361YDPSR7

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

The CS8361YDPSR7 is a dual micropower low dropout (LDO) linear regulator manufactured by onsemi. It features two regulated outputs: a fixed 5V standby output accurate to ±2% capable of supplying 100mA, and a tracking output adjustable via an external lead, supporting up to 250mA. The device includes an active RESET circuit with hysteresis that monitors the standby rail and holds the line low during power-up or dropout conditions. A logic-level ENABLE input controls the tracking regulator. Typical dropout voltage is 400mV at rated current, with quiescent current typically at 140µA under a 300µA load.

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

• Dual-output architecture providing a precision 5V standby rail and a secondary tracking output controlled by an external adjust lead.
• Integrated active RESET function with hysteresis that ensures system stability by holding the reset line low during startup and undervoltage events.
• Logic-level ENABLE pin allows for precise control over the tracking regulator output state.
• Comprehensive protection mechanisms including independent thermal shutdown, short-circuit protection, reverse battery tolerance, and 60V load dump capability.

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

• Automotive microprocessor power supply systems
• Battery-powered microprocessor applications requiring low quiescent current
• Systems requiring isolated standby power with synchronized reset signaling

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

Verify the specific suffix 'R7' against official onsemi documentation to confirm reel packaging specifications and tape-and-reel dimensions. Ensure the ordering part number matches the required package type and temperature range. Cross-reference the datasheet revision date to confirm feature availability, particularly regarding the ENABLE and RESET configurations. Confirm RoHS compliance status through the manufacturer's material composition documents before procurement.

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

Select this component when a dual-output LDO with integrated reset monitoring is required for microprocessor applications. The CS8361 is suitable for designs needing a stable 5V standby rail alongside a controllable secondary output. Consider its low quiescent current and robust protection features for automotive or battery-operated environments. Verify that the 400mV typical dropout voltage meets the input-to-output voltage differential requirements of the target application circuit.

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

The CS8361 series belongs to onsemi's lineup of micropower linear regulators designed for efficiency in low-power applications. This specific variant integrates both voltage regulation and system management functions (RESET/ENABLE) into a single package. It addresses the need for simplified power sequencing in microprocessor-based systems by combining regulation with fault detection capabilities.

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

Check for direct cross-references from Cherry Semiconductor or other manufacturers offering identical dual-output LDOs with RESET and ENABLE features. Verify pin compatibility and electrical parameters such as dropout voltage and current ratings before substitution.

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

How does the RESET circuit operate in relation to the standby output?

The active RESET output monitors the 5V standby output and holds the RESET line low during power-up and regulator dropout conditions. It includes hysteresis and is guaranteed to operate correctly with 1V on the standby output.

What is the maximum current capability of the tracking output?

The second output, which tracks the 5V standby output through an external adjust lead, can supply loads of up to 250mA.

What protection features are included in the CS8361?

Both outputs are protected against overvoltage, short circuit, reverse battery, and overtemperature conditions. The device also supports 60V load dump tolerance.