S-8337ACIC-P8T1G

Overview

The S-8337ACIC-P8T1G is a CMOS step-up switching regulator controller from the S-8337 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 the ROSC pin. The device utilizes pulse width modulation (PWM) control with a maximum duty ratio adjustable through an external resistor on the RDuty pin. Phase compensation and gain are configurable using components connected to the CC pin. It features under-voltage lockout and timer latch short-circuit protection, packaged in an 8-SON format.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller within a single CMOS chip.
• Supports low-voltage operation starting at 1.8 V for portable system applications.
• Allows flexible configuration of switching frequency and maximum duty ratio via external resistors.
• Includes built-in under-voltage lockout and short-circuit protection circuits.

Applications

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

Procurement Notes

Verify the specific suffix P8T1G corresponds to the 8-SON package variant when sourcing. Confirm RoHS compliance status and check for any product change notifications regarding solder plating or material composition updates prior to finalizing procurement orders.

Selection Notes

Select this component for designs requiring high-frequency boost regulation with adjustable timing parameters. Ensure external components match the required frequency range and duty cycle settings. Verify thermal performance within the -40°C to 85°C operating temperature range for the target application environment.

Part Context

This part belongs to the S-8337/8338 Series of high-frequency PWM control switching regulator controllers. The S-8337 variant specifically allows user-adjustable maximum duty ratios, distinguishing it from the fixed-duty S-8338 series. Both share identical core architecture and protection features.

Replacement Considerations

S-8337ABEC-T8T1G serves as a direct functional substitute within the same series, offering identical control logic and protection mechanisms while differing primarily in package type and manufacturing lot specifications.