S-8338AACC-P8T1G

Overview

The S-8338AACC-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 internal oscillation frequency of 1.134 MHz via an external resistor. The device utilizes pulse width modulation (PWM) control and features a maximum duty ratio of 88.5%. It includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. The component is housed in an 8-SON(A) package measuring 2.9 x 2.8 mm and functions within a temperature range of -40°C to 85°C.

Feature Summary

• Integrates UVLO and timer latch short-circuit protection for enhanced system reliability
• Supports high-frequency operation up to 1.134 MHz for compact passive component design
• Enables flexible frequency setting through an external resistor connected to the ROSC pin

Applications

• Power supply systems for LCD panels
• Portable electronic devices operating on low voltage sources
• Step-up DC-DC converter designs requiring PWM control

Procurement Notes

Verify the specific suffix P8T1G corresponds to the 8-SON(A) package configuration rather than TSSOP variants. Confirm RoHS compliance status as per the latest manufacturer documentation. Check for any product change notifications regarding material composition or manufacturing site updates before finalizing procurement orders.

Selection Notes

Select this controller when designing boost converters requiring a wide input voltage range starting at 1.8 V. Ensure the application benefits from the high switching frequency capability to minimize inductor size. Verify that the required output current does not exceed the capabilities of the external power switch, as this IC acts solely as a controller without an integrated driver stage.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8338 variant specifically offers a higher maximum duty ratio compared to the S-8337 series. Both series share similar internal architectures including reference voltage circuits, error amplifiers, and oscillators designed for efficient power management in portable applications.

Replacement Considerations

S-8338ACCC-T8T1G: Alternative version in TSSOP-8 package with identical electrical characteristics.

FAQ

How is the switching frequency determined?

The internal oscillation frequency is set externally by connecting a resistor to the ROSC pin, allowing frequencies up to 1.134 MHz.

What protection features are included?

The IC incorporates an under-voltage lockout circuit and a timer latch short-circuit protection circuit to safeguard against abnormal conditions.