S-8338AAIA-P8T1G

Overview

The S-8338AAIA-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 features a fixed maximum duty ratio of 88% for PWM control, with phase compensation adjustable through external components connected to the CC pin. It includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. The reference voltage accuracy is specified at ±1.5% for voltages up to 1.0 V. The component is housed in an 8-SON(A) package measuring 2.9 x 2.8 mm.

Feature Summary

• Integrates high-frequency PWM control with adjustable internal oscillation up to 1.133 MHz
• Includes built-in under-voltage lockout and timer latch short-circuit protection
• Allows adjustment of operation stability and transient response via external phase compensation components

Applications

• Power supply units for LCD displays
• Portable electronic systems operating on low voltage sources
• Step-up DC-DC conversion in battery-powered devices

Procurement Notes

Verify the specific suffix P8T1G against official ABLIC documentation to confirm the exact package type and tape-and-reel specifications. Ensure compatibility with the required operating temperature range and check for any product change notifications or end-of-life notices that may affect long-term availability.

Selection Notes

Select this component when a compact solution for low-voltage step-up applications is required. The fixed 88% duty ratio distinguishes it from other series variants. Verify that the external resistor values for frequency setting and the capacitor for short-circuit delay meet the design requirements for the target application environment.

Part Context

This part belongs to the S-8337/8338 series of CMOS step-up switching regulators designed for portable systems. Unlike the S-8337 series which allows duty ratio control, the S-8338 series maintains a fixed maximum duty ratio. The AAIA variant specifically denotes the electrical characteristics and package configuration within this family.

Replacement Considerations

The S-8338ABAA-P8T1G is a documented alternative within the same series offering identical functional characteristics and package dimensions.