S-8337ABGA-P8T1G

Overview

The S-8337ABGA-P8T1G is a CMOS step-up switching regulator controller from the S-8337 series, designed for low-voltage portable systems. 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 with a maximum duty ratio adjustable through an external resistor connected to the RDuty pin. Phase compensation and gain are configurable using components on the CC pin. It integrates an error amplifier, under voltage lockout circuit, and timer latch short-circuit protection.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, PWM controller, UVLO, and short-circuit protection in a single CMOS chip.
• Allows flexible configuration of switching frequency up to 1.133 MHz and maximum PWM duty ratio via external resistors.
• Supports stable operation and transient response adjustment through external phase compensation components.

Applications

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

Procurement Notes

Verify the specific suffix P8T1G corresponds to the 8-SON package variant rather than TSSOP when sourcing. Confirm RoHS compliance status as some older revisions may differ. Ensure the ordering code matches the exact manufacturer designation to avoid pinout mismatches between SON and TSSOP packages.

Selection Notes

Select this component when designing boost converters requiring high-frequency operation above 1 MHz with precise duty cycle control. It is suitable for applications needing a wide input voltage range starting from 1.8 V. Consider the external component requirements for frequency and duty ratio setting when evaluating board space constraints.

Part Context

This part belongs to the ABLIC S-8337/8338 Series of high-frequency PWM control switching regulator controllers. The series distinguishes itself by allowing user-adjustable maximum duty ratios in the S-8337 model, unlike the fixed duty ratio found in the S-8338 counterpart. Both share similar core architectures optimized for low-voltage efficiency.

Replacement Considerations

S-8337ACGA-P8T1G