AS1372-BWLT-10

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

The AS1372-BWLT-10 is a dual supply rail linear regulator designed for ultra-low voltage applications. It features a fixed output voltage of 1.0V with an accuracy of ±1.5%. The device supports a maximum output current of 350mA and operates within an input voltage range of 0.7V to 4.5V, while the bias supply ranges from 2.5V to 5.5V. Key electrical parameters include a dropout voltage of 135mV at full load, a shutdown current of 10nA, and noise voltage of 50µVRMS. It is housed in a 5-bumps CS-WLP package and qualified for operation between -40°C and +85°C.

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

• Dual supply architecture utilizing separate VIN and VBIAS rails to optimize efficiency and minimize dropout voltage at low output levels.
• Integrated protection mechanisms including thermal shutdown at 150°C and overcurrent limiting to ensure robust operation under fault conditions.
• Ultra-low quiescent and shutdown currents enhance battery life in portable devices, with a typical shutdown current of 10nA.

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

• Powering core voltages in cordless and mobile phones
• Supplying power to MP3 players and PDAs
• Providing regulated voltage for hand-held computers and digital cameras

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

Verify the specific ordering code AS1372-BWLT-10 against the manufacturer's latest datasheet to confirm the 1.0V output specification and 5-bump CS-WLP package configuration. Ensure compatibility with the required input voltage range and bias supply requirements before integration. Confirm RoHS compliance and lead-free status as stated in the official documentation.

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

Select this component when designing systems requiring precise low-voltage regulation with minimal dropout characteristics. The dual-rail design is particularly suitable for applications where the input voltage is derived from a DC-DC converter, allowing independent optimization of the bias supply for improved transient response and efficiency compared to single-supply alternatives.

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

The AS1372 series consists of dual supply rail linear regulators intended for battery-powered handheld electronics. Manufactured by austriamicrosystems (now part of ams OSRAM), these devices are engineered to provide stable, low-noise power supplies for sensitive analog and digital circuits in compact form factors suitable for space-constrained mobile devices.

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

Consult the manufacturer's cross-reference tool for compatible alternatives. Verify that any substitute device matches the 5-bump CS-WLP package outline and pinout to ensure mechanical and electrical compatibility without redesigning the PCB layout.

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

What is the function of the VBIAS pin?

The VBIAS pin provides a dedicated bias supply voltage ranging from 2.5V to 5.5V. This separate rail allows the internal NMOS pass transistor to operate with reduced drain-to-source voltage, improving efficiency and lowering dropout voltage compared to traditional single-supply designs.

How does the AS1372 handle overtemperature conditions?

The device includes integrated thermal protection that shuts down the regulator when the junction temperature reaches 150°C. A hysteresis of 25°C ensures the device restarts only after cooling sufficiently, protecting against sustained short-circuit or overload conditions.