S-8337ACFB-P8T1G

Overview

The S-8337ACFB-P8T1G is a CMOS step-up switching regulator controller from the S-8337 series, manufactured by ABLIC Inc. It operates within a supply voltage range of 1.8 V to 6 V and supports an internal oscillation frequency adjustable up to 1.134 MHz via an external resistor. The device features a maximum duty ratio of 0.89 and includes timer latch short-circuit protection. It is housed in an 8-SON package measuring 2.9 x 2.8 mm and functions as a positive output boost DC-DC converter.

Feature Summary

• Integrates under voltage lockout and timer latch short-circuit protection circuits for enhanced operational safety.
• Allows external adjustment of the internal oscillation frequency through a resistor connected to the ROSC pin.
• Provides configurable maximum PWM duty ratio control via an external resistor on the RDuty pin.

Applications

• Power supply units for LCD displays
• Portable electronic systems operating on low voltage sources

Procurement Notes

Verify the specific suffix P8T1G corresponds to the 8-SON package variant rather than the TSSOP-8 configuration found in other series members. Confirm RoHS compliance status and check for any product change notifications regarding solder plating materials or development components before finalizing procurement orders.

Selection Notes

Select this component when designing boost converters requiring high-frequency operation up to 1.134 MHz with a flexible duty cycle limit. Ensure the application environment remains within the specified -40°C to 85°C temperature range and that the input voltage stays between 1.8 V and 6 V for proper UVLO functionality.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. While the S-8338 variant fixes the maximum duty ratio at 88%, the S-8337 series allows user-defined limits. This specific model utilizes the compact 8-SON package suitable for space-constrained portable designs.

Replacement Considerations

S-8337ACFA-P8T1G shares identical electrical specifications and package dimensions but may differ in manufacturing lot or revision status. Verify functional equivalence against current datasheet revisions before substituting.