S-8337ACDB-T8T1G

Overview

The S-8337ACDB-T8T1G 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 utilizes pulse-width modulation (PWM) control. The device features an internal oscillator with a frequency settable up to 1.133 MHz via an external resistor on the ROSC pin. It is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates a reference voltage circuit, error amplifier, and PWM controller for efficient power regulation.
• Includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits.
• Allows adjustable maximum duty ratio through an external resistor connected to the RDuty pin.

Applications

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

Procurement Notes

Verify the specific suffix against official documentation to confirm exact electrical characteristics, as variations exist within the series. Confirm availability status directly with authorized distributors, as stock levels fluctuate. Ensure compliance with RoHS and REACH regulations relevant to your region before procurement.

Selection Notes

Select this component when designing boost converters requiring a wide input voltage range starting at 1.8 V. Consider the external component requirements for setting oscillation frequency and duty cycle. Evaluate thermal performance within the specified -40°C to 85°C ambient temperature range for the target application.

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 demanding low minimum operating voltages and compact solutions. It shares core architecture with the S-8338 series but differs in duty ratio configuration flexibility.

Replacement Considerations

S-8337AAEB-T8T1G, S-8337ABEC-T8T1G, S-8337AAGB-T8T1G, S-8337ACDC-T8T1G, S-8337AAHA-T8T1G, S-8337ACGB-T8T1G, S-8337ACCC-T8T1G, S-8337AAHB-T8T1G