S-8337ABEA-P8T1G

Overview

The S-8337ABEA-P8T1G is a CMOS step-up switching regulator controller from the ABLIC S-8337 series. It operates with a minimum input voltage of 1.8 V and supports an internal oscillation frequency up to 1.133 MHz, adjustable via an external resistor on the ROSC pin. The device utilizes pulse width modulation (PWM) control with a maximum duty ratio configurable through an external resistor on the RDuty pin. Phase compensation and gain are adjustable 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 timer latch short-circuit protection circuits

Applications

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

Procurement Notes

Verify the specific suffix P8T1G corresponds to the 8-SON package variant rather than the TSSOP version. Confirm RoHS compliance status and check for any product change notifications regarding material or design updates before finalizing procurement specifications.

Selection Notes

Select this component when designing boost converters requiring adjustable switching frequencies up to 1.133 MHz. Ensure external components for the ROSC, RDuty, and CC pins are chosen to meet stability requirements. Verify that the application input voltage remains above the 1.8 V minimum threshold for proper controller initialization.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8337 variant distinguishes itself by allowing user-defined maximum duty ratios, unlike the fixed duty ratio found in the S-8338 series. Both share similar core architectures including UVLO and short-circuit protection mechanisms.

Replacement Considerations

S-8337AAEB-P8T1G serves as a direct functional substitute within the same series offering identical boost control capabilities and package dimensions.