S-8337ABIB-P8T1G

Overview

The S-8337ABIB-P8T1G is a CMOS step-up switching regulator controller from the ABLIC S-8337 series. It integrates a reference voltage circuit, oscillator, error amplifier, PWM controller, UVLO, and short-circuit protection. The device operates within a supply voltage range of 1.8V to 6V and supports a switching frequency range of 257.4kHz to 1.134MHz. It features a maximum duty cycle of 89% and provides current limit, enable, and frequency control functions. Packaged in an 8-SON (A) (2.9x2.8) surface-mount package, it is designed for low-voltage portable applications.

Feature Summary

• Integrates high-frequency PWM control with adjustable oscillation settings via external components
• Includes built-in under voltage lockout and timer latch short-circuit protection circuits
• Supports phase compensation and gain adjustment through external resistor and capacitor connections

Applications

• Power supply for LCD panels
• Portable electronic systems operating on low voltage
• Step-up DC-DC converter designs requiring compact footprint

Procurement Notes

Verify the specific suffix ABIB against the official datasheet to confirm pinout and electrical characteristics match your design requirements. Ensure the 8-SON package dimensions align with your PCB layout constraints. Confirm RoHS compliance status with the manufacturer for regulatory adherence. Check for any product change notifications that may affect material composition or performance specifications before finalizing procurement.

Selection Notes

Select this component when a low minimum operating voltage of 1.8V is required for battery-powered devices. Choose the S-8337ABIB variant specifically for its fixed maximum duty ratio configuration compared to other series members. Consider the 8-SON package for space-constrained designs. Evaluate the need for external phase compensation components to ensure stability across varying load conditions.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is characterized by its CMOS technology and ability to operate at frequencies up to 1.2 MHz. It is distinct from the S-8338 series which has a fixed duty ratio, whereas the S-8337 allows for duty ratio control via external resistors.

Replacement Considerations

Direct substitutes include other S-8337 variants such as S-8337AAIB-P8T1G or S-8337ABEC-P8T1G, provided the specific electrical parameters like duty ratio and pin compatibility are verified. Cross-referencing with the official replacement list is recommended.