S-8338ABIB-T8T1G

Overview

The S-8338ABIB-T8T1G is a CMOS step-up switching regulator controller from the S-8338 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 on the ROSC pin. The maximum duty ratio is fixed at 88%. The device incorporates an under-voltage lockout circuit and a timer latch short-circuit protection circuit. It is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates a reference voltage circuit, oscillator, error amplifier, and PWM controller for efficient step-up regulation.
• Features built-in under-voltage lockout and timer latch short-circuit protection circuits for enhanced reliability.
• Allows flexible configuration of oscillation frequency and phase compensation through external passive components.

Applications

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

Procurement Notes

Verify the specific suffix ABIB against official ABLIC documentation to confirm exact electrical characteristics and availability status. Confirm that the T8T1G designation corresponds to the correct TSSOP-8 reel packaging format. Ensure compliance with RoHS standards as indicated in current product notices before finalizing procurement orders.

Selection Notes

Select this component when designing boost converter circuits requiring operation from low input voltages down to 1.8 V. The fixed 88% maximum duty ratio distinguishes it from the S-8337 series, which allows variable duty ratio control. Consider the need for external frequency setting resistors and phase compensation networks to optimize transient response and stability for the specific application load.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8338 variant specifically features a fixed maximum duty ratio, contrasting with the S-8337 series which offers adjustable duty ratios. Both series share similar core architectures including UVLO and short-circuit protection, targeting low-voltage portable applications.

Replacement Considerations

S-8338ABEC-T8T1G: Same series, TSSOP-8 package, fixed duty ratio. S-8338ACCB-T8T1G: Same series, TSSOP-8 package, fixed duty ratio. Verify pin compatibility and electrical parameters before substitution.