S-8338AAAA-P8T1G

Overview

The S-8338AAAA-P8T1G is a CMOS step-up switching regulator controller from the S-8338 series, manufactured by ABLIC Inc. It operates with an input voltage range of 1.8 V to 6 V and supports a maximum oscillation frequency of 1.133 MHz via an external resistor on the ROSC pin. The device features a fixed maximum duty ratio of 88.5% and utilizes pulse width modulation (PWM) control. It includes an internal reference voltage circuit, error amplifier, under-voltage lockout (UVLO), and timer latch short-circuit protection. The component is housed in an 8-SON package measuring 2.9x2.8 mm and is designed for portable systems requiring low-voltage operation.

Feature Summary

• Integrates UVLO and timer latch short-circuit protection circuits for enhanced system reliability.
• Allows adjustable phase compensation and gain values through external RC components connected to the CC pin.
• Supports flexible switching frequency configuration up to 1.133 MHz using an external resistor.

Applications

• Power supply units for LCD displays
• Portable electronic systems operating on low voltage
• Step-up DC-DC converter designs

Procurement Notes

Verify the specific suffix P8T1G against the manufacturer's current datasheet to confirm packaging details and RoHS compliance status. Ensure that the required factory pack quantity aligns with project procurement requirements. Cross-reference the part number with official distributor catalogs to confirm availability and lead times prior to ordering.

Selection Notes

Select this controller when a fixed high duty ratio near 88% is required for boost applications. Consider the S-8337 series if variable maximum duty ratio control via an external resistor is necessary instead. Evaluate the external component requirements for the ROSC and CC pins to ensure stability and transient response meet specific design constraints.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is characterized by its ability to operate at low minimum input voltages, making it suitable for battery-powered or low-voltage source applications. The S-8338 variant specifically distinguishes itself with a fixed maximum duty ratio compared to the adjustable duty cycle options available in the S-8337 series.

Replacement Considerations

The S-8337AADC-P8T1 is listed as a parameter-equivalent alternative within the same product family. Verify compatibility regarding the duty ratio characteristics, as the S-8337 series allows for variable maximum duty ratio control via the RDuty pin, whereas the S-8338 maintains a fixed limit.