S-8337ABEB-P8T1G

Overview

The S-8337ABEB-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 1.8 V to 6 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 features under-voltage lockout (UVLO) and timer latch short-circuit protection, packaged in an 8-SON (2.9x2.8 mm) surface-mount package.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, PWM controller, UVLO, and short-circuit protection circuits.
• Allows flexible configuration of switching frequency and maximum duty ratio via external resistors.
• Supports phase compensation adjustment for stable operation and transient response.

Applications

• Power supply systems for LCD displays
• Portable electronic devices operating on low voltage
• Step-up DC-DC converter designs requiring high-frequency PWM control

Procurement Notes

Verify the specific suffix P8T1G corresponds to the 8-SON package and reel packaging format as documented. Confirm RoHS compliance status and REACH registration details against the latest manufacturer environmental statements. Ensure the component is suitable for new designs, noting that some series variants may carry restrictions regarding minimum order quantities or availability for future production.

Selection Notes

Select this model when a low minimum operating voltage of 1.8 V is required for portable applications. Choose the S-8337 variant over the S-8338 if adjustable maximum duty ratio is necessary, rather than a fixed limit. Consider the 8-SON package for compact board space requirements. Verify that the external component values for frequency and duty ratio setting align with the desired operational parameters.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for step-up applications, offering flexibility in frequency and duty cycle settings compared to fixed-function alternatives. It represents a CMOS-based solution optimized for efficiency and stability in low-voltage power management scenarios.

Replacement Considerations

S-8337AAEB-P8T1G

FAQ

How is the maximum duty ratio controlled in the S-8337ABEB-P8T1G?

The maximum duty ratio is controlled by the value of the external resistor connected to the RDuty pin.

What protection features are included in this controller?

The device includes an under-voltage lockout circuit (UVLO) and a timer latch short-circuit protection circuit.