S-8338ABGA-T8T1G

Overview

The S-8338ABGA-T8T1G is a CMOS step-up switching regulator controller from the S-8338 series by ABLIC Inc. It operates within an input voltage range of 1.8 V to 6 V and utilizes pulse width modulation (PWM) control. The internal oscillation frequency is adjustable up to 1.133 MHz via an external resistor on the ROSC pin. The device features a fixed maximum duty ratio of 88% and includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. It is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient power management
• Features timer latch short-circuit protection circuit for enhanced system reliability
• Supports adjustable internal oscillation frequency via external resistor connection
• Includes under-voltage lockout circuit to ensure stable operation at low input voltages

Applications

• Power supply for LCD panels
• Portable systems operating on low voltage
• Step-up DC-DC converter designs requiring high-frequency operation

Procurement Notes

Verify the specific suffix ABGA against official datasheets to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status through current manufacturer documentation. Ensure compatibility with existing PCB footprint dimensions for the 8-TSSOP package before finalizing procurement orders.

Selection Notes

Select this component when a fixed maximum duty ratio is required rather than user-adjustable limits found in the S-8337 series. Choose based on the need for an adjustable switching frequency up to 1.133 MHz to optimize external component size. Consider the 1.8 V minimum operating voltage requirement for low-power portable applications.

Part Context

This part belongs to the S-8338 series of high-frequency PWM control switching regulator controllers. It shares architectural similarities with the S-8337 series but differs in duty ratio configuration, offering a fixed maximum duty cycle instead of a programmable one. The series is designed for compact power solutions in portable electronics.

Replacement Considerations

S-8338ACCC-T8T1G and S-8338AAIA-T8T1G are documented variants within the same series. Verify pinout and electrical parameter alignment before substitution.