S-8338ACEA-T8T1G

Overview

The S-8338ACEA-T8T1G is a CMOS step-up switching regulator controller from ABLIC Inc., designed for low-voltage portable systems. It operates within an input voltage range of 1.8 V to 6 V and supports a maximum oscillation frequency of 1.133 MHz via the ROSC pin. The device features a fixed maximum duty ratio of 88% and utilizes pulse width modulation (PWM) control. It includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. The component is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller in a single CMOS chip
• Provides timer latch short-circuit protection for enhanced system reliability
• Supports external adjustment of phase compensation and gain values
• Enables flexible internal oscillation frequency setting through external resistor

Applications

• Power supply units for LCD displays
• Portable electronic devices requiring low voltage operation
• Step-up DC-DC converter designs
• Battery-powered consumer electronics

Procurement Notes

Verify the specific suffix codes against official ABLIC documentation to ensure correct packaging and marking specifications. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer. Check for any product change notifications that may affect material composition or performance characteristics prior to final procurement decisions.

Selection Notes

Select this controller when a fixed maximum duty ratio is required rather than adjustable limits found in other series variants. Ensure the application benefits from the low minimum operating voltage of 1.8 V. Verify that the external component values for the ROSC and CC pins align with the desired switching frequency and stability requirements for the specific power stage design.

Part Context

This part belongs to the S-8337/8338 Series of high-frequency PWM control switching regulator controllers. While sharing core architecture with the S-8337 series, it is distinguished by its fixed maximum duty ratio characteristic. The series is engineered for efficiency in compact, low-voltage power management applications common in modern portable technology.

Replacement Considerations

S-8338ABEC-T8T1G

FAQ

How is the switching frequency determined?

The internal oscillation frequency is set externally via a resistor connected to the ROSC pin, allowing configuration up to 1.133 MHz.

What protection features are included?

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