AS1363-BSTT-AD

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

The AS1363-BSTT-AD is a low-dropout linear voltage regulator in a 6-pin SOT23 package. It operates from an input voltage of +2.0V to +5.5V and delivers a guaranteed 500mA load current with a typical dropout voltage of 150mV at full load. The device features user-adjustable output voltage ranging from 1.2V to 5.3V via the SET pin. Key electrical parameters include a typical quiescent current of 40µA, shutdown supply current of 30nA, and thermal shutdown protection at 170°C.

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

• User-adjustable output voltage configuration using external resistive divider
• Integrated power-ok open-drain indicator for out-of-regulation detection
• Low quiescent and shutdown currents optimized for battery-powered systems
• Built-in short-circuit and thermal overload protection mechanisms

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

• Laptops
• PDAs
• Portable audio devices
• Mobile phones
• Cordless phones

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

Verify the specific ordering code suffix against official manufacturer documentation to confirm the adjustable output variant and tape-and-reel delivery form. Ensure compatibility with standard surface-mount assembly processes for the 6-pin SOT23 package. Confirm RoHS compliance status through the latest material composition declarations provided by the manufacturer.

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

Select this component when a low-quiescent-current LDO with high output current capability is required for portable electronics. The adjustable output range allows flexibility in system design without requiring multiple fixed-voltage variants. Consider the thermal resistance characteristics of the PCB layout to manage power dissipation effectively under maximum load conditions.

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

This part belongs to the AS1363 series of low-dropout linear regulators manufactured by ams OSRAM (formerly austriamicrosystems). The series includes both fixed-output versions with bypass pins and adjustable versions like the AS1363-BSTT-AD. These regulators are designed specifically for battery-operated applications requiring efficient power management and compact packaging solutions.

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

AS1363-BSTT-12

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

How is the output voltage adjusted on the AS1363-BSTT-AD?

The output voltage is set between 1.2V and 5.3V by connecting an external resistive voltage divider network between the OUT and GND pins, with the midpoint connected to the SET pin.

What is the function of the POK pin?

The POK pin provides an active-low open-drain signal that indicates when the output voltage falls below its nominal regulation threshold, typically used as a power-on-reset signal or fault indicator.

What capacitor values are recommended for stable operation?

A 1µF input capacitor (CIN) and a 2.2µF low-ESR output capacitor (COUT) are recommended. For output voltages below 2V, a 4.7µF output capacitor should be used.