S-8338AABC-P8T1G

Overview

The S-8338AABC-P8T1G is a CMOS step-up switching regulator controller from the S-8338 series by ABLIC Inc. It operates within 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 utilizes pulse width modulation (PWM) control with a fixed maximum duty ratio of 88.5%. It features under-voltage lockout, timer latch short-circuit protection, and adjustable phase compensation. The component is housed in an 8-SON package measuring 2.9 mm x 2.8 mm and functions across a temperature range of -40°C to 85°C.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient step-up regulation.
• Includes under-voltage lockout and timer latch short-circuit protection circuits for enhanced reliability.
• Allows adjustment of operation stability and transient response through external RC components connected to the CC pin.

Applications

• Power supply units for LCD displays
• Portable electronic systems operating at low voltages

Procurement Notes

Verify the specific suffix P8T1G corresponds to the 8-SON(A) package variant rather than TSSOP configurations found in other series members. Confirm RoHS compliance status as some datasheet records indicate variations. Ensure the source document explicitly lists this exact part number to avoid confusion with similar S-8338 variants that may have different duty cycle controls or package types.

Selection Notes

Select this component when a fixed high duty ratio near 88% is required for boost applications. Use the CC pin for phase compensation tuning to match specific load transient requirements. Verify that the external inductor and capacitor values align with the 1.8 V to 6 V input range and desired output voltage settings defined by the external resistors.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. While the S-8337 series allows variable duty ratio control via an RDuty pin, the S-8338 series fixes the maximum duty ratio. This distinction defines the operational envelope for boost converter designs utilizing this specific controller topology.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-referencing requires verifying identical package dimensions, electrical characteristics, and pinout compatibility with existing designs.