S-8337ABCC-T8T1G

Overview

The S-8337ABCC-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 supports an internal oscillation frequency adjustable up to 1.133 MHz via an external resistor on the ROSC pin. The device utilizes PWM control with a maximum duty ratio configurable through the RDuty pin. It features under-voltage lockout (UVLO) and timer latch short-circuit protection. The component is housed in an 8-TSSOP package and is rated for operation between -40°C and +85°C.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient step-up regulation.
• Includes under-voltage lockout and timer latch short-circuit protection circuits for enhanced reliability.
• Allows flexible configuration of oscillation frequency and maximum PWM duty ratio via external components.

Applications

• Power supply systems for LCD displays
• Portable electronic devices operating on low voltage sources

Procurement Notes

Verify the specific suffix T8T1G corresponds to the reel packaging format when ordering. Confirm RoHS compliance status as detailed in the manufacturer's documentation. Ensure the selected variant matches the required frequency and duty ratio settings for the target application design.

Selection Notes

Select this controller when designing boost converters requiring low minimum operating voltage and high-frequency operation. Consider the external component requirements for setting the switching frequency and duty cycle. Evaluate thermal performance within the specified ambient temperature range during system integration.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for applications demanding compact power solutions with low input voltage capabilities. The S-8337 variant specifically offers adjustable maximum duty ratios compared to the fixed options in the S-8338 series.

Replacement Considerations

The S-8337ACCC-T8T1G is a documented substitute within the same series offering similar functionality and pin compatibility.