S-8338ACDC-T8T1G

Overview

The S-8338ACDC-T8T1G is a CMOS step-up switching regulator controller from ABLIC Inc., designed for low-voltage portable systems. It operates within an input voltage range of 1.8 V to 6 V and supports a maximum oscillation frequency of 1.133 MHz via the ROSC pin. The device features a fixed maximum duty ratio of 88% and utilizes pulse-width modulation (PWM) control. It includes an under-voltage lockout circuit and timer latch short-circuit protection. The component is housed in an 8-SON(A) package measuring 2.9 x 2.8 mm, with an operating temperature range of -40°C to 85°C.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient step-up regulation.
• Features timer latch short-circuit protection and under-voltage lockout for enhanced system reliability.
• Allows external adjustment of phase compensation and gain through connected resistor and capacitor values.

Applications

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

Procurement Notes

Verify the specific suffix T8T1G against the manufacturer's official documentation to confirm the exact packaging configuration and marking details. Ensure compatibility with the required 8-SON(A) footprint during PCB layout. Confirm RoHS compliance status through current environmental declarations before finalizing procurement orders.

Selection Notes

Select this component when a fixed maximum duty ratio is preferred over adjustable limits found in the S-8337 series. It is suitable for designs requiring a minimum operating voltage of 1.8 V. Engineers must calculate external components for the ROSC and CC pins to set the desired switching frequency and ensure stability.

Part Context

This part belongs to the S-8338 series of high-frequency PWM control switching regulator controllers. It shares core architecture with the S-8337 series but differs in having a fixed maximum duty ratio rather than an externally adjustable one. Both series target low-voltage applications and utilize similar internal protection mechanisms.

Replacement Considerations

The S-8338ABEC-T8T1G serves as a functional equivalent within the same series, offering identical electrical characteristics but utilizing an 8-TSSOP package instead of the 8-SON(A) form factor. Designers must account for the physical footprint differences when considering substitution.