S-8337AAEA-T8T1G

Overview

The S-8337AAEA-T8T1G is a CMOS step-up switching regulator controller from the S-8337 series, manufactured by ABLIC Inc. It operates within a supply voltage range of 1.8V to 6V and supports an internal oscillation frequency adjustable up to 1.134MHz via an external resistor on the ROSC pin. The device utilizes PWM control with a maximum duty ratio of 0.89, configurable through the RDuty pin. It features phase compensation adjustment via the CC pin for stability. Packaged in an 8-TSSOP format, it includes UVLO and timer latch short-circuit protection.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient step-up regulation
• Features timer latch short-circuit protection and under-voltage lockout (UVLO) circuits
• Allows external adjustment of oscillation frequency and maximum duty ratio via dedicated pins

Applications

• Power supply for LCD panels
• Portable systems operating on low voltage sources

Procurement Notes

Verify the specific suffix T8T1G corresponds to the 8-TSSOP package and reel packaging configuration. Confirm RoHS compliance status and REACH registration details against the latest manufacturer documentation. Ensure design-in compatibility with required input voltage ranges and thermal performance specifications for the target application environment.

Selection Notes

Select this component when a low minimum operating voltage of 1.8V is required for portable applications. Choose based on the need for externally adjustable switching frequency and duty cycle control. Consider the 8-TSSOP package for surface-mount assembly requirements. Verify that the fixed maximum duty ratio of 0.89 meets the specific boost converter design constraints.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8337 variant specifically allows user-defined maximum duty ratios, distinguishing it from the S-8338 which has a fixed 88% limit. Both series share the same core architecture designed for low-voltage operation and compact power management solutions.

Replacement Considerations

Direct substitutes include other S-8337 series variants such as S-8337AAEB-T8T1G or S-8337ACCC-T8T1G, provided the output voltage setting resistors are adjusted accordingly. Cross-series replacement with S-8338 models requires accounting for the fixed maximum duty ratio limitation.