S-8338ACCB-P8T1G

Overview

The S-8338ACCB-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 supports a maximum oscillation frequency of 1.134 MHz. The device utilizes pulse-width modulation (PWM) control with a maximum duty cycle of 88.5%. It features built-in under-voltage lockout and timer latch short-circuit protection. The component is housed in an 8-SON package measuring 2.9 x 2.8 mm and functions as a positive output boost DC-DC switching controller.

Feature Summary

• Integrates a reference voltage circuit, oscillator, error amplifier, and PWM controller for efficient step-up regulation.
• Includes under-voltage lockout and timer latch short-circuit protection circuits for enhanced system reliability.
• Supports external frequency setting via a resistor connected to the ROSC pin, allowing operation up to 1.134 MHz.

Applications

• Power supply units for LCD displays
• Portable electronic systems operating on low voltages

Procurement Notes

Verify the specific suffix P8T1G against official ABLIC documentation to confirm the 8-SON package type and reel packaging configuration. Ensure compatibility with design requirements regarding the 1.8 V minimum operating voltage and the 88.5% maximum duty cycle limitations. Confirm RoHS compliance status through current manufacturer datasheets before finalizing procurement specifications.

Selection Notes

Select this component when designing boost converter circuits requiring a wide input voltage range starting at 1.8 V. The high-frequency capability allows for smaller external passive components compared to lower-frequency alternatives. Consider the 8-SON package dimensions for PCB layout constraints and verify that the application environment remains within the specified -40°C to 85°C operating temperature range.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for portable applications needing efficient power management from low-voltage sources. The S-8338 variant specifically offers boost topology capabilities, distinguishing it from buck or other topologies within the broader PMIC category.

FAQ

How is the internal oscillation frequency determined?

The internal oscillation frequency can be set up to 1.134 MHz by connecting an external resistor to the ROSC pin.

What protection features are integrated into the controller?

The device includes an under-voltage lockout circuit and a timer latch short-circuit protection circuit to safeguard against abnormal operating conditions.