S-8337ACIB-P8T1G

Overview

The S-8337ACIB-P8T1G is a CMOS step-up switching regulator controller from the S-8337 series, manufactured by ABLIC Inc. It operates with a minimum input voltage of 1.8 V and supports an internal oscillation frequency up to 1.133 MHz via an external resistor on the ROSC pin. The device utilizes pulse width modulation (PWM) control and allows adjustment of the maximum duty ratio through an external resistor connected to the RDuty pin. Phase compensation and gain are configurable using components on the CC pin. It features under-voltage lockout and timer latch short-circuit protection, packaged in an 8-pin SON format.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller within a single CMOS chip
• Enables flexible frequency setting up to 1.133 MHz and adjustable maximum duty ratio via external resistors
• Includes built-in under-voltage lockout and timer latch short-circuit protection circuits

Applications

• Power supply for LCD panels
• Portable systems operating on low voltage sources

Procurement Notes

Verify the specific suffix P8T1G against official documentation to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status and ensure the component matches the required operating temperature range before procurement. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and current availability status.

Selection Notes

Select this controller when designing boost converters requiring low start-up voltage and high-frequency operation. Ensure external components for the ROSC, RDuty, and CC pins are chosen to meet stability requirements. Verify that the selected inductor and diode support the intended switching frequency and current levels for the target application.

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 needing efficient power conversion from low voltage sources. The S-8337 variant specifically offers user-adjustable duty ratios, distinguishing it from the fixed-duty S-8338 series.

Replacement Considerations

The S-8338ABEC-T8T1G serves as a functional substitute within the same series, though it features a fixed maximum duty ratio rather than the adjustable configuration found in the S-8337 series.