AS13986-2828-T

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

The AS13986-2828-T is a dual low-dropout voltage regulator providing two independent outputs of 2.8V each, with a guaranteed output current up to 150mA per channel. It operates from an input voltage range of 2.5V to 5.5V and features ultra-low dropout characteristics, achieving 45mV at full load. The device incorporates logic-controlled shutdown for power management, integrated thermal overload protection, and short-circuit current limiting. Designed for stability with low-ESR ceramic capacitors, it offers high power supply rejection (55dB at 1kHz) and low output noise (30µVRMS).

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

• Dual independent regulated outputs with logic-controlled enable/disable functionality.
• Ultra-low dropout voltage performance suitable for battery-operated applications.
• Integrated thermal overload protection and short-circuit current limiting.
• High power supply rejection ratio maintained down to low input voltages.

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

• Powering cordless and mobile phones.
• Supplying MP3 players and handheld computers.
• Powering digital cameras and PDAs.
• General hand-held battery-powered devices.

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

Verify the specific ordering code AS13986-2828-T matches the required 2.8V/2.8V output configuration. Confirm the package type is 8-pin WLP and delivery form is tape and reel. Ensure application requirements align with the specified operating temperature range of -40°C to +125°C and input voltage limits of 2.5V to 5.5V.

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

Select this component when dual isolated rails are needed from a single source in space-constrained designs. The 8-pin WLP package minimizes board area. Ensure external capacitors meet the specified ESR range (0.005Ω to 5Ω) for stability. Consider the 160µs turn-on time if fast transient response is critical.

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

This part belongs to the AS13986 series of dual LDO regulators manufactured by ams OSRAM USA INC. (formerly austriamicrosystems). The series includes variants with different fixed output voltage combinations, such as 1.8V/3.3V, all sharing the same low-noise architecture and 150mA current capability.

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

Cross-reference tools suggest checking for functional equivalents from other manufacturers. Verify pin compatibility and electrical parameters before substitution. Consult official datasheets to confirm thermal and electrical specifications match the design requirements.

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

What is the recommended bypass capacitor value?

A 0.01µF capacitor should be connected between the BYPASS pin and GND to minimize noise and prevent output overshoot during startup.

How does the device handle thermal overload?

When the junction temperature exceeds +160°C, thermal protection turns off the pass transistors. The device resumes operation when the temperature cools by approximately 20°C.