S-8337ABDA-T8T1G

Overview

The S-8337ABDA-T8T1G is a CMOS step-up switching regulator controller from the S-8337 series by ABLIC Inc. It operates within an input voltage range of 1.8 V to 6 V and utilizes pulse width modulation (PWM) control. The internal oscillation frequency is adjustable up to 1.133 MHz via an external resistor connected to the ROSC pin. The maximum duty ratio is configurable through an external resistor on the RDuty pin, while phase compensation is adjusted using components on the CC pin. It features under-voltage lockout and timer latch short-circuit protection.

Feature Summary

• Configurable PWM maximum duty ratio via external resistor
• Adjustable internal oscillation frequency up to 1.133 MHz
• Integrated under-voltage lockout circuit
• Timer latch short-circuit protection

Applications

• Power supply for LCD modules
• Portable systems operating on low voltage
• Step-up DC-DC converter controllers

Procurement Notes

Verify the specific suffix ABDA against official datasheets to confirm exact electrical characteristics, as variations exist within the S-8337 family. Confirm RoHS compliance status and package details directly with the manufacturer or authorized distributors before finalizing procurement specifications.

Selection Notes

Select this component when designing boost converters requiring low minimum operating voltage and high-frequency operation. Ensure external components for the ROSC, RDuty, and CC pins are chosen to meet specific frequency, duty cycle, and stability requirements defined in the application circuit guidelines.

Part Context

This device belongs to the S-8337/8338 Series, which are CMOS step-up switching regulators designed for portable applications. The series integrates reference voltage circuits, error amplifiers, and PWM controllers into a compact TSSOP-8 package, enabling efficient power management in space-constrained designs.

Replacement Considerations

S-8337AAHA-T8T1G and S-8337ACGB-T8T1G are documented members of the same S-8337 series. Verify functional equivalence regarding duty ratio configuration and frequency settings before substitution.