S-8333AAHB-T8T1G

Overview

The S-8333AAHB-T8T1G is a CMOS step-up switching voltage regulator manufactured by ABLIC Inc. It operates within an input voltage range of 1.8 V to 6 V and features a fixed internal oscillation frequency of 1.2 MHz. The device utilizes pulse width modulation (PWM) control for efficient power conversion. It is housed in an 8-pin TSSOP package with dimensions of 4.40 mm width. The component supports a maximum duty ratio of 0.89 and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a reference voltage circuit, oscillator, error amplifier, and PWM controller
• Includes under voltage lockout (UVLO) and timer latch short-circuit protection
• Supports low minimum operating voltage for portable system applications

Applications

• Power supply for LCD modules
• Portable electronic systems requiring low voltage operation
• Step-up DC-DC conversion in compact devices

Procurement Notes

Verify the specific suffix 'AAHB' against the official ABLIC datasheet to confirm the exact output voltage setting or functional variant. Confirm that the T8T1G designation corresponds to the correct reel packaging quantity and tape specifications required for surface mount assembly processes. Ensure compliance with RoHS3 standards as indicated in manufacturer documentation.

Selection Notes

Select this component when a fixed 1.2 MHz switching frequency is required for noise-sensitive designs. Consider the 1.8 V minimum operating voltage constraint for battery-powered applications. Evaluate the thermal performance within the specified -40°C to +85°C range. Compare against other S-8333 variants if adjustable frequency or different duty cycle control is needed.

Part Context

This part belongs to the S-8333 series of high-frequency PWM control switching regulator controllers. The series is designed for step-up applications using external MOSFETs. It shares architectural similarities with the S-8337 and S-8338 series but differs in internal oscillator settings and control pin configurations. The TSSOP-8 package is standard across this family for space-constrained PCB layouts.

Replacement Considerations

Direct substitutes within the S-8333 series include variants such as S-8333ABIB-T8T1G or S-8333ABFC-T8T1G, provided their specific output voltage settings match the design requirements. Verify pin compatibility and electrical parameters before substitution.