S-8337AAEC-T8T1G

Overview

The S-8337AAEC-T8T1G is a CMOS step-up switching regulator controller from the S-8337 series by ABLIC Inc. It operates within a supply voltage range of 1.8 V to 6 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. It features under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. The component is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient step-up regulation
• Features under-voltage lockout and timer latch short-circuit protection for enhanced system reliability
• Allows flexible configuration of oscillation frequency and maximum duty ratio via external components

Applications

• Power supply for LCD displays
• Portable systems operating on low voltage
• General purpose DC-DC step-up converter designs

Procurement Notes

Verify the specific suffix codes against the official datasheet to ensure correct output characteristics and package type. Confirm RoHS compliance status as manufacturing processes may evolve. Check for any Product Change Notifications (PCN) regarding material or design updates before finalizing procurement plans.

Selection Notes

Select this component when designing boost converters requiring low minimum operating voltage and high-frequency operation. Ensure external resistors are chosen to set the desired switching frequency and duty cycle within the specified operational limits. Consider the thermal performance of the TSSOP-8 package for the intended application environment.

Part Context

This part belongs to the S-8337/8338 Series of high-frequency PWM control switching regulator controllers. The series is designed for applications requiring compact power solutions with low input voltage capabilities. The S-8337 variant specifically allows user-defined maximum duty ratios, distinguishing it from the fixed-duty S-8338 series.

Replacement Considerations

S-8337AADC-P8T1 offers similar functionality in an 8-SON package. S-8337ACCC-T8T1G provides equivalent electrical characteristics in an 8-TSSOP package.