S-8337ABBB-P8T1G

Overview

The S-8337ABBB-P8T1G is a CMOS step-up switching regulator controller from the S-8337 series, manufactured by ABLIC Inc. It operates within an input voltage range of 1.8 V to 6 V and utilizes pulse width modulation (PWM) control. The device features an internal oscillator with a frequency settable up to 1.133 MHz via an external resistor on the ROSC pin. Maximum duty ratio adjustment is facilitated through the RDuty pin. It includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits, housed in an 8-pin SON package.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient step-up regulation
• Features adjustable maximum duty ratio via external resistor connection
• Includes under-voltage lockout and timer latch short-circuit protection mechanisms

Applications

• Power supply for LCD modules
• Portable systems operating on low voltage
• Battery-powered electronic devices requiring step-up conversion

Procurement Notes

Verify the specific suffix P8T1G corresponds to the 8-SON package variant rather than TSSOP. Confirm RoHS compliance status as indicated in official documentation. Ensure ordering quantities align with manufacturer standard packaging requirements. Cross-reference datasheet revision history for any recent material or marking changes that may affect integration.

Selection Notes

Select this component when designing boost converters requiring low minimum operating voltage down to 1.8 V. The adjustable oscillation frequency allows optimization for external component size versus efficiency trade-offs. Consider the fixed maximum duty ratio characteristics inherent to the S-8337 series when calculating output voltage ranges relative to input conditions.

Part Context

This part 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. It shares core architectural similarities with other members of the family but differs in package type and specific electrical parameter configurations defined by its suffix codes.

Replacement Considerations

S-8337AADC-P8T1G is a documented equivalent within the same series offering identical functional specifications in a compatible SON package format.