S-8337ABBC-P8T1G

Overview

The S-8337ABBC-P8T1G is a CMOS step-up switching regulator controller from the S-8337 series, manufactured by ABLIC Inc. It operates within a supply voltage range of 1.8V to 6V and supports an internal oscillation frequency up to 1.134MHz via an external resistor. The device features PWM control with a maximum duty ratio adjustable through an external resistor connected to the RDuty pin. It includes under-voltage lockout and timer latch short-circuit protection circuits. The component is housed in an 8-SON package measuring 2.9x2.8mm.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient power management.
• Supports low minimum operating voltage suitable for portable systems.
• Features adjustable maximum duty ratio via external resistance.
• Includes built-in under-voltage lockout and short-circuit protection.

Applications

• Power supply for LCD modules
• Portable electronic systems requiring low voltage operation
• Step-up DC-DC converter designs

Procurement Notes

Verify the specific suffix P8T1G corresponds to the 8-SON package configuration when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure compatibility with required thermal dissipation standards for the selected application environment prior to final procurement decisions.

Selection Notes

Select this controller when designing boost converters requiring adjustable duty cycles and high-frequency operation. Consider the 1.8V minimum operating voltage for battery-powered applications. Evaluate external component requirements for frequency setting and phase compensation to ensure stability across varying load conditions.

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 demanding compact solutions with low input voltage capabilities. The S-8337 variant specifically allows for user-defined maximum duty ratios, distinguishing it from fixed-duty counterparts.

FAQ

How is the oscillation frequency determined?

The internal oscillation frequency is set by connecting a resistor to the ROSC pin, allowing adjustment up to 1.134MHz.

What protection features are included?

The device incorporates an under-voltage lockout circuit and a timer latch short-circuit protection circuit.