S-8337ACAC-T8T1G

Overview

The S-8337ACAC-T8T1G is a CMOS step-up switching regulator controller from the S-8337 series by ABLIC Inc. It operates within a supply voltage range of 1.8V to 6V and supports an internal oscillation frequency up to 1.133 MHz, adjustable via an external resistor. The device utilizes PWM control with a maximum duty ratio configurable through an external resistor. It features under-voltage lockout (UVLO) and timer latch short-circuit protection. The component is housed in an 8-TSSOP package and is designed for low-voltage portable systems.

Feature Summary

• Integrates reference voltage circuit, oscillator, error amplifier, and PWM controller
• Includes under-voltage lockout and timer latch short-circuit protection circuits
• Allows external adjustment of oscillation frequency and maximum duty ratio
• Supports phase compensation and gain value adjustment via external components

Applications

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

Procurement Notes

Verify the exact suffix ACAC against official ABLIC documentation to confirm specific factory settings or pin configurations, as variations exist within the S-8337 family. Confirm availability status directly with authorized distributors, as this part may be marked as not recommended for new designs due to potential minimum order quantity restrictions or lifecycle limitations.

Selection Notes

Select this controller when designing boost converters requiring a wide input voltage range starting at 1.8V. Ensure external components are chosen to set the desired switching frequency and duty cycle according to datasheet specifications. Consider the 8-TSSOP package constraints for thermal management and PCB layout in compact portable applications.

Part Context

This component belongs to the S-8337/8338 Series, which are high-frequency PWM control switching regulator controllers. The series is characterized by its ability to operate at frequencies up to 1.2 MHz, allowing for smaller passive components compared to lower-frequency alternatives. It is distinct from the S-8338 series, which has a fixed maximum duty ratio.

Replacement Considerations

Publicly confirmed substitute part numbers for S-8337ACAC-T8T1G were not found in the provided source material.