AS1369-BWLT-13

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

The AS1369-BWLT-13 is a 200mA ultra-compact low dropout regulator manufactured by ams OSRAM. It provides a fixed 1.3V output voltage with high accuracy of ±2% over temperature. The device operates within an input voltage range of 2.0V to 5.5V and features a typical quiescent current of 25µA, dropping below 0.1µA in standby mode. It offers excellent low-noise performance at 30µVRMS without requiring external bypass capacitance. The component includes thermal shutdown and over-current protection, housed in a 4-bump WL-CSP package.

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

• Ultra-compact 4-bump WL-CSP package designed for space-constrained mobile devices
• High power supply rejection ratio (PSRR) of 72dB at 1kHz
• Integrated enable pin for logic-controlled power management
• Internal protection against thermal overload and short-circuit conditions

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

• Mobile phones
• Personal Digital Assistants (PDAs)
• MP3 players
• Battery-powered electronic systems

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

Verify the specific ordering code suffix to confirm the fixed output voltage level, as the AS1369 series offers multiple voltage options. Confirm that the procurement channel sources from authorized distributors to ensure authenticity. Check for RoHS compliance documentation if required by your manufacturing standards. Ensure the component handling procedures account for the WLP package sensitivity to light exposure during storage and assembly.

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

Select this regulator when a small footprint and low noise are critical for battery-operated portable electronics. The 1.3V output is suitable for powering digital logic or RF sections requiring stable voltage rails. Consider the 2.0V minimum input voltage requirement relative to your battery discharge curve. The absence of required external noise bypass capacitors simplifies the bill of materials and reduces board space usage compared to other LDOs.

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

The AS1369 belongs to a family of ultra-compact low dropout regulators designed for mobile communication and battery-powered applications. This specific variant, AS1369-BWLT-13, is part of the standard lineup offering fixed output voltages ranging from 1.2V to 5.0V in 100mV steps. The series is characterized by its ability to operate with very-low ESR output capacitors, making it ideal for modern miniaturized consumer electronics.

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

Other variants within the AS1369 series, such as AS1369-BWLT-12 or AS1369-BWLT-15, share identical electrical characteristics and pinouts but provide different fixed output voltages. These can serve as direct functional substitutes if the system design allows for voltage adjustment. Verify that any replacement maintains the same 4-bump WL-CSP package dimensions and pitch.

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

Does the AS1369 require an external capacitor for noise reduction?

No, the AS1369 offers excellent low-noise performance and does not require an external bypass capacitor.

What is the function of the EN pin on the AS1369?

The EN pin serves as a logic-high enable input. A voltage greater than or equal to 1.2V enables the output, while a voltage less than or equal to 0.4V disables it.

How does the AS1369 handle over-current conditions?

The device includes internal over-current protection that limits the output current and shuts down the regulator if excessive current or temperature thresholds are exceeded.