RT9166A-15GX

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

The RT9166A-15GX is a CMOS low dropout regulator optimized for ultra-fast transient response. It supplies 300mA or 600mA output current with dropout voltages of 230mV and 580mV, respectively. The device features a typical quiescent current of 220μA and operates within a wide input voltage range of 3V to 5.5V. It provides fixed output voltages from 1.2V to 4.5V in 0.1V steps; the '15' suffix indicates a 1.5V output. Stability is maintained with output capacitors as low as 1μF. Protection includes current limiting and thermal shutdown.

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

• Optimized for ultra-fast transient response
• Stable with low-ESR ceramic capacitors as small as 1μF
• Includes current limiting and thermal shutdown protection

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

• CD/DVD-ROM drives
• Wireless LAN cards, keyboards, and mice
• Battery-powered equipment
• XDSL routers
• PCMCIA cards

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

Verify the specific package type associated with the 'G' suffix against official Richtek documentation, as package designations can vary between SOT-223 and other formats depending on the revision. Confirm the exact output voltage step corresponds to the '15' code (1.5V) in the manufacturer's ordering guide. Ensure compatibility with required output capacitance values for stability.

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

Select this component when circuit requirements demand rapid load transient recovery times. It is suitable for applications requiring stable regulation with minimal external capacitor ESR. Consider the 300mA/600mA current capability and the 3V to 5.5V input range. Verify that the fixed 1.5V output meets system power rail specifications.

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

The RT9166A series belongs to Richtek's lineup of CMOS LDO regulators designed for high-performance transient response. This family supports various packages including SOT-23, SOT-89, SOT-223, TO-92, and TO-252. The 'A' variant typically denotes specific performance optimizations or package variations within the standard RT9166 architecture.

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

Cross-reference with other RT9166/A variants such as RT9166-15GXL or RT9166A-15P if pinout or package differences exist. Verify functional equivalence regarding transient response and dropout characteristics before substitution.