S-8337AAAA-T8T1G

Overview

The S-8337AAAA-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 a maximum internal oscillation frequency of 1.134 MHz, adjustable via an external resistor on the ROSC pin. The device features a maximum duty ratio of 0.89, configurable through the RDuty pin. It provides one positive output stage with current limit, enable, and frequency control characteristics. The component is housed in an 8-TSSOP package (4.40 mm wide) and functions across a temperature range of -40°C to 85°C.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, PWM controller, UVLO, and timer latch short-circuit protection.
• Supports high-frequency operation up to 1.134 MHz for compact passive component design.
• Enables flexible duty cycle adjustment via external resistor connection.

Applications

• Power supply for LCD panels
• Portable electronic systems requiring low-voltage operation

Procurement Notes

Verify the specific suffix code against official documentation to confirm exact electrical parameters, as variations exist within the S-8337 family. Confirm RoHS compliance status and lead times directly with the manufacturer or authorized distributors prior to ordering.

Selection Notes

Select this controller when designing boost converters requiring input voltages as low as 1.8 V. Ensure external components support the desired switching frequency and duty cycle settings defined by the ROSC and RDuty pins.

Part Context

This part belongs to the S-8337/8338 Series, which are CMOS step-up switching regulator controllers designed for portable applications. The series emphasizes low minimum operating voltages and high-frequency capabilities to minimize external component size.

Replacement Considerations

S-8337AAEA-T8T1G, S-8337ACGB-T8T1G, S-8337ABBA-T8T1G, S-8337AAHB-T8T1G, S-8337AAHA-T8T1G