S-8338ABGA-P8T1G

Overview

The S-8338ABGA-P8T1G 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-SON package.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient step-up regulation
• Features timer latch short-circuit protection circuit for enhanced system reliability
• Allows adjustment of phase compensation and gain via external components connected to the CC pin

Applications

• Power supply units for LCD panels
• Portable electronic systems operating on low voltage sources
• Battery-powered devices requiring efficient voltage boosting

Procurement Notes

Verify the specific suffix codes against the official datasheet to ensure correct output voltage settings and package type. Confirm RoHS compliance status with the manufacturer as specifications may vary by production batch. Check for any product change notifications (PCN) regarding material or manufacturing process updates before finalizing procurement orders.

Selection Notes

Select this component when a fixed 88% maximum duty cycle is required for the boost converter topology. Ensure the application supports an external resistor for setting the switching frequency up to 1.133 MHz. Verify that the load current requirements are compatible with the internal switch capabilities and that the input voltage remains above the 1.8 V minimum operating threshold.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8338 variant is distinguished by its fixed maximum duty ratio, unlike the S-8337 series which allows duty ratio control via an external resistor. Both series share similar internal architectures including UVLO and short-circuit protection mechanisms.

Replacement Considerations

The S-8337AAHA-T8T1G serves as a functional alternative within the same family, offering similar voltage ranges and protection features but with variable duty ratio control instead of a fixed 88% limit.