AS1362-BTTT-27

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

The AS1362-BTTT-27 is a 300mA ultra-low-noise low-dropout linear regulator with a fixed 2.7V output, housed in a TSOT23-6 package. It delivers up to 300mA continuous current with a typical dropout voltage of 140mV at full load. The device features an integrated P-channel MOSFET pass transistor for extremely low quiescent current of 40µA and achieves an output noise of 9µVRMS. It includes a power-ok open-drain output, shutdown capability reducing consumption below 500nA, and operates within a 2V to 5.5V input range across -40°C to +85°C.

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

• Ultra-low noise performance with 9µVRMS output noise using a dedicated bypass pin
• Integrated active-low power-ok indicator for monitoring regulated output status
• Low-power shutdown mode that reduces supply current to less than 500nA
• Stable operation guaranteed with small 1µF ceramic capacitors at any load

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

• Portable battery-powered devices requiring stable voltage rails
• Wireless communication modules and base stations
• Mobile phones and personal digital assistants
• Bluetooth portable radios and accessories

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

Verify the specific ordering code AS1362-BTTT-27 against manufacturer documentation to confirm the 300mA load rating and 2.7V preset output voltage. Ensure compatibility with the required TSOT23-6 surface-mount footprint and validate thermal management requirements for the intended operating environment.

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

Select this component when a 300mA output current capacity is necessary alongside strict low-noise requirements for sensitive analog or RF circuits. The fixed 2.7V output eliminates external resistor networks, simplifying design. Consider the TSOT23-6 package size constraints and verify that the input voltage remains sufficiently above the output to maintain regulation under maximum load conditions.

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

This part belongs to the AS1361/AS1362 family of ultra-low-noise LDOs from ams OSRAM. While the AS1361 variant provides 150mA, the AS1362 offers double the current capacity at 300mA while maintaining identical noise and dropout characteristics. Both share the same architecture, pinout, and stability requirements, differing primarily in their maximum continuous output current ratings.

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

The AS1361-BTTT-27 serves as a lower-current alternative within the same series if only 150mA is required. No other direct cross-model substitutes are documented in the provided datasheet.

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

How does the device achieve its ultra-low noise specification?

The AS1362 utilizes a dedicated noise bypass circuit connected to the BYPASS pin. Connecting a 10nF capacitor between the BYPASS and OUT pins significantly reduces output voltage noise to 9µVRMS.

What is the function of the SHDNN pin?

The SHDNN pin controls the shutdown state. Driving this pin low disables the internal reference and pass transistor, reducing quiescent current to below 500nA and placing the output in a high-impedance state.

Is the device protected against short circuits?

Yes, the AS1362 includes current limiting circuitry that restricts the output current to approximately 510mA. The output can be shorted to ground indefinitely without causing damage to the device.