BQ71533DCKRG4

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

The BQ71533DCKRG4 is a positive fixed-output Low-Dropout (LDO) linear voltage regulator manufactured by Texas Instruments. It provides a stable 3.3 V output with a maximum load current of 50 mA. The device operates within an input voltage range of 2.5 V to 6.5 V and features a typical supply current of 4.2 µA. It is housed in a compact SC-70-5 surface-mount package. The component supports operation across an extended temperature range from -40°C to +125°C, ensuring reliability in various environmental conditions.

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

• Fixed 3.3 V output voltage for precise power rail generation
• Ultra-low quiescent current consumption for battery efficiency
• Compact SC-70-5 surface-mount packaging for space-constrained designs

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

• Portable consumer electronics requiring low-power regulation
• Battery-operated devices needing efficient voltage management
• Embedded systems utilizing Texas Instruments PMIC families

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

This component is officially designated as Obsolete and End-of-Life (EOL) by Texas Instruments. Manufacturers have ceased production, meaning new units are no longer available through standard distribution channels. Procurement efforts should focus on verifying the authenticity of remaining stock from authorized distributors or secondary market suppliers. Designers must initiate immediate redesign processes to incorporate active replacement components to ensure long-term supply chain stability.

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

Engineers selecting this part must account for its discontinued status during the design phase. While it offers a 50 mA output capability and low dropout characteristics suitable for specific legacy applications, reliance on EOL parts poses significant risks for future manufacturing scalability. Alternative selection criteria should prioritize availability and lifecycle status over exact parameter matching to avoid production halts associated with obsolete semiconductor inventory.

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

The BQ71533DCKRG4 belongs to the broader Texas Instruments LDO voltage regulator portfolio, specifically categorized under Power Management ICs (PMIC). It shares functional similarities with other members of the TPS715 and BQ715 series, which are designed for low-noise, high-PSRR applications. This specific variant integrates a fixed 3.3 V output into a small form factor, aligning with industry trends toward miniaturization in portable electronic hardware.

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

Public documentation identifies the TPS71533DCKRG4 as a similar substitute. Engineers should evaluate pin compatibility and electrical specifications before transitioning to this alternative to ensure seamless integration without circuit modification.