CS8481YDPR5

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

The CS8481YDPR5 is a micropower dual linear voltage regulator in a D2PAK-5 package. It provides a primary 3.3 V output capable of 250 mA and a secondary 5.0 V standby output capable of 100 mA. Both outputs feature low dropout characteristics with maximum dropout voltages of 600 mV. The device includes an ENABLE input for logic-level control of the primary output, reducing quiescent current to typically 100 µA when disabled. Electrical specifications include line regulation of 50 mV and load regulation of 50 mV for both channels.

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

• Dual-output architecture providing independent 3.3 V and 5.0 V regulated rails
• ENABLE pin allows logic-level shutdown of the primary output to minimize power consumption
• Integrated protection against reverse battery, short circuits, overvoltage, and overtemperature conditions

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

• Automotive electronic systems requiring robust voltage regulation under transient conditions
• Embedded designs needing simultaneous 3.3 V and 5.0 V supply rails
• Battery-powered equipment utilizing standby modes to extend operational life

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

Verify that the ordering suffix 'R5' corresponds to the tape and reel shipping configuration as specified in the datasheet. Confirm the package type is D2PAK-5 (Case 936AC) to ensure mechanical compatibility with the intended PCB footprint. Check for any specific assembly or wafer lot markings required by the procurement specification.

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

Select this component when a dual-output linear regulator with high reverse battery tolerance is required. The device is suitable for applications where the primary output must be switchable via a logic signal while maintaining a continuous standby rail. Ensure the thermal design accounts for the junction-to-case resistance and ambient temperature constraints to prevent thermal shutdown.

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

This part belongs to the SMART REGULATOR family from onsemi, designed for automotive and industrial environments. It integrates bias circuitry derived from the standby output, simplifying system design. The device is manufactured by Semiconductor Components Industries, LLC, adhering to specific automotive-grade robustness standards for voltage regulation.

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

Consult local sales representatives for alternative packaging options such as SO-8, DIP-8, or TO-220-5 if different form factors are needed. Verify pinout compatibility before substituting with other dual-output regulators from the manufacturer's portfolio.

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

How does the ENABLE pin affect the secondary output?

The ENABLE pin controls only the primary 3.3 V output. The secondary 5.0 V output remains active regardless of the ENABLE state.

What is the reverse battery tolerance of the CS8481?

The device can withstand a reverse battery voltage of up to -15 V without damage.