S-8337AACA-T8T1G

Overview

The S-8337AACA-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 1.8 V to 6 V and utilizes PWM control with an internal oscillation frequency adjustable up to 1.133 MHz via an external resistor on the ROSC pin. The device features a minimum operating voltage of 1.8 V and includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. Maximum duty ratio is controlled by an external resistor on the RDuty pin, while phase compensation is adjusted via components on the CC pin. It is housed in an 8-TSSOP package.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient step-up regulation.
• Supports low-voltage operation starting at 1.8 V, suitable for portable systems.
• Includes built-in under-voltage lockout and timer latch short-circuit protection mechanisms.

Applications

• Power supply for LCD displays
• Portable electronic systems requiring low voltage operation

Procurement Notes

Verify the specific suffix codes against the official datasheet to ensure correct configuration of frequency and duty cycle settings. Confirm package type matches application requirements. Check manufacturer documentation for current design status and recommended usage guidelines before integration.

Selection Notes

Select this component when a low input voltage start-up capability around 1.8 V is required. Ensure external components for ROSC, RDuty, and CC pins are chosen to meet specific frequency and stability targets. Verify thermal performance within the specified 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 applications needing compact power solutions with adjustable switching frequencies and robust protection features in small surface-mount packages.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official manufacturer resources for potential cross-references or updated series replacements.