ET7H133B

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

The ET7H133B is a linear voltage regulator IC from ETEK Microelectronics, designed for positive fixed output applications. It provides a stable 3.3 V DC output with a maximum current capability of 200 mA to 300 mA, depending on specific datasheet revisions and thermal conditions. The device is housed in a compact SOT-89-3 surface-mount package, suitable for space-constrained designs. It operates as a low-dropout regulator (LDO), offering efficient power management for portable electronics and battery-powered systems requiring precise voltage regulation.

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

• Provides a fixed positive output voltage for stable power supply
• Supports high output current for demanding load requirements
• Utilizes a compact SOT-89-3 surface-mount package for board space efficiency

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

• Portable consumer electronics requiring stable 3.3V logic levels
• Battery-powered devices needing efficient linear regulation
• Embedded systems with space-constrained PCB layouts

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

Verify the specific output current rating (200mA vs 300mA) against the latest official ETEK datasheet, as variations exist across documentation versions. Confirm the package type is SOT-89-3 and ensure compatibility with your thermal management strategy. Check RoHS compliance status if required by your manufacturing standards. Always cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

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

Select the ET7H133B when a fixed 3.3V output is required with moderate current demands up to 300mA. Consider its SOT-89-3 package for limited board area. Evaluate input voltage ranges and dropout characteristics against your system's power rail. Compare with alternatives like the ET6H133B if lower quiescent current or different current ratings are prioritized over the standard performance profile.

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

ETEK Microelectronics specializes in analog ICs and power solutions for mobile and industrial applications. The ET7H133B belongs to their linear voltage regulator family, targeting cost-effective and reliable power management. This component supports various electronic devices where stable voltage regulation is critical, fitting into broader portfolios of power protection and signal chain products offered by the manufacturer.

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

The ET6H133B is a related variant within the same product line, potentially offering different current or IQ specifications. Verify electrical compatibility before substitution. No other direct public substitute part numbers are confirmed in available documentation.