S-8338ACCA-P8T1G

Overview

The S-8338ACCA-P8T1G is a CMOS step-up switching regulator controller from the S-8338 series, manufactured by ABLIC Inc. It operates with a minimum input voltage of 1.8 V and supports an internal oscillation frequency up to 1.133 MHz via an external resistor on the ROSC pin. The device features a fixed maximum duty ratio of 88% for PWM control. It includes an under-voltage lockout circuit and a timer latch short-circuit protection circuit. The reference voltage accuracy is specified at 1.0 V ±1.5%. The component is housed in an 8-SON(A) package measuring 2.9x2.8 mm.

Feature Summary

• Integrates a high-frequency oscillator adjustable up to 1.133 MHz for compact passive component design
• Provides built-in under-voltage lockout and timer latch short-circuit protection circuits
• Features a fixed maximum duty ratio of 88% to ensure stable operation across varying load conditions

Applications

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

Procurement Notes

Verify the specific suffix P8T1G against official datasheets to confirm the 8-SON(A) package configuration and reel packaging details. Ensure compatibility with the required switching frequency range and duty cycle specifications for the target application before procurement.

Selection Notes

Select this controller when a fixed duty ratio is acceptable and high-frequency operation is desired to minimize external inductor size. Verify that the input voltage range meets the 1.8 V minimum requirement and that the output voltage setting resistors align with the 1.0 V reference accuracy.

Part Context

This component belongs to the S-8337/8338 series of step-up switching regulator controllers. It shares core architecture with the S-8337 series but differs in duty ratio control, offering a fixed maximum duty ratio instead of an externally adjustable one. This simplifies the external circuit design while maintaining high efficiency.

Replacement Considerations

S-8338ABEA-P8T1G

FAQ

How is the switching frequency determined?

The internal oscillation frequency can be set up to 1.133 MHz by connecting a resistor to the ROSC pin.

What protection features are included?

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