S-8338AADC-P8T1G

Overview

The S-8338AADC-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 maximum duty ratio of 88.5%. It features integrated under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. The component is housed in an 8-SON package measuring 2.9 x 2.8 mm and is rated for operation between -40°C and 85°C.

Feature Summary

• Integrates UVLO and timer latch short-circuit protection for enhanced system reliability
• Supports high-frequency PWM control up to 1.133 MHz for compact passive design
• Operates at low minimum input voltage of 1.8 V suitable for portable applications

Applications

• Power supply for LCD panels
• Portable electronic systems operating on low voltage
• Step-up DC-DC converter designs requiring compact footprint

Procurement Notes

Verify the specific suffix P8T1G against official datasheets to confirm the 8-SON package type and tape-and-reel packaging configuration. Ensure compatibility with RoHS3 standards as indicated in manufacturer documentation. Cross-reference the full part number with authorized distributors to validate current availability status and lead times, as components may be subject to obsolescence or supply constraints.

Selection Notes

Select this controller when designing boost converters requiring low input voltage operation starting at 1.8 V. The fixed maximum duty cycle of 88.5% limits the achievable voltage gain compared to adjustable variants. Verify that the required output voltage does not exceed the capabilities defined by the 88.5% duty ratio limit at the minimum input voltage. Confirm thermal management requirements for the 8-SON package within the specified operating temperature range.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8338 variant specifically distinguishes itself by offering a fixed maximum duty ratio, whereas the S-8337 series allows duty ratio adjustment via an external resistor. Both series share similar internal architectures including reference voltage circuits, error amplifiers, and oscillator blocks designed for efficient power management in space-constrained devices.

Replacement Considerations

The S-8338AADB-P8T1G serves as a parameter-equivalent alternative within the same series, differing primarily in package style. Designers should verify pinout compatibility and thermal characteristics when substituting between SON and TSSOP packages. No other direct cross-model replacements are documented in the provided source material.