S-8337ABHA-P8T1G

Overview

The S-8337ABHA-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 internal oscillation frequency is adjustable up to 1.133 MHz via an external resistor connected to the ROSC pin. The maximum duty ratio is configurable through an external resistor on the RDuty pin. Phase compensation and gain are adjusted using components connected to the CC pin. The device is housed in an 8-pin SON package.

Feature Summary

• Integrates reference voltage circuit, oscillator, error amplifier, PWM controller, UVLO, and timer latch short-circuit protection.
• Supports low-voltage operation starting at 1.8 V, suitable for portable systems.
• Allows flexible configuration of switching frequency and maximum duty ratio via external resistors.

Applications

• Power supply for LCD modules
• Portable electronic systems operating on low voltage

Procurement Notes

Verify the specific suffix P8T1G corresponds to the 8-SON package variant rather than TSSOP. Confirm RoHS compliance status as some SON variants may differ. Check for active design recommendations since similar family members are marked obsolete. Ensure ordering quantities align with manufacturer standard packaging requirements.

Selection Notes

Select this component when designing boost converters requiring high-frequency operation up to 1.133 MHz. It is appropriate for applications needing adjustable duty cycles and phase compensation. Consider the 8-SON package for compact layouts. Verify that the required input voltage range fits within the 1.8 V to 6 V specification.

Part Context

This part belongs to the S-8337/8338 Series of high-frequency PWM control switching regulator controllers. The S-8337 series specifically features adjustable maximum duty ratios, unlike the fixed 88% duty cycle found in the S-8338 series. Both series share core architecture including UVLO and short-circuit protection circuits designed for efficiency in low-power applications.

Replacement Considerations

S-8337AAHA-P8T1G is a confirmed substitute within the same series and package type. S-8337ACDC-T8T1G serves as an alternative but uses a TSSOP-8 package instead of SON. Verify pin compatibility and thermal performance when substituting between package types.