S-8338AAGA-P8T1G

Overview

The S-8338AAGA-P8T1G is a CMOS step-up switching regulator controller from the S-8338 series by ABLIC Inc. It operates with an input voltage range of 1.8 V to 6 V and supports a maximum oscillation frequency of 1.133 MHz via an external resistor on the ROSC pin. The device utilizes pulse width modulation (PWM) control with a fixed maximum duty ratio of 88.5%. It features a reference voltage accuracy of ±1.5% at 1.0 V and includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. The component is housed in an 8-SON package measuring 2.9 mm by 2.8 mm.

Feature Summary

• Integrates UVLO and timer latch short-circuit protection for enhanced system reliability
• Allows flexible internal oscillation frequency adjustment up to 1.133 MHz
• Provides high reference voltage accuracy of ±1.5% for precise output regulation

Applications

• Power supply units for LCD panels
• Portable electronic systems operating on low voltages
• Step-up DC-DC converter designs requiring compact form factors

Procurement Notes

Verify the specific suffix P8T1G against official datasheets to confirm package type and tape-and-reel specifications. Ensure compatibility with required thermal management and PCB layout guidelines for the 8-SON footprint. Cross-reference part numbers with authorized distributors to avoid counterfeit components, as this series may have multiple manufacturing revisions.

Selection Notes

Select this controller when a fixed duty cycle near 88% is acceptable for the target boost ratio. It is suitable for applications prioritizing low minimum operating voltage down to 1.8 V. Designers must account for the fixed duty limit when calculating input-to-output voltage ranges to ensure stable operation under all load conditions.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulators. While the S-8337 variant allows adjustable maximum duty ratios via an external resistor, the S-8338 series fixes this parameter. This distinction makes the S-8338AAGA-P8T1G distinct within the family regarding duty cycle flexibility and application constraints.

Replacement Considerations

S-8338ABEA-P8T1G

FAQ

How is the internal oscillation frequency adjusted?

The frequency is set by connecting an external resistor to the ROSC pin, allowing values up to 1.133 MHz.

What is the maximum duty ratio for the S-8338 series?

The maximum duty ratio is fixed at approximately 88.5% for the S-8338 series.