S-8338ABIA-P8T1G

Overview

The S-8338ABIA-P8T1G is a CMOS step-up switching regulator controller from the S-8338 series, manufactured by ABLIC Inc. 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 an external resistor on the ROSC pin. The device features a fixed maximum duty ratio of 88.5% and utilizes pulse width modulation (PWM) control. It includes an under-voltage lockout circuit and a timer latch short-circuit protection circuit with adjustable delay time. The unit is housed in an 8-SON package measuring 2.9 x 2.8 mm.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient step-up regulation
• Provides timer latch short-circuit protection with adjustable delay time via external capacitor
• Allows phase compensation and gain adjustment through external resistor and capacitor connections
• Supports low-voltage operation starting at 1.8 V for portable system applications

Applications

• Power supply for LCD panels
• Portable electronic systems operating on low voltage
• DC-DC conversion in battery-powered devices

Procurement Notes

Verify the specific suffix 'P8' indicates the 8-SON(A) package configuration distinct from TSSOP variants. Confirm RoHS compliance status and REACH registration details against the latest manufacturer datasheet revision. Ensure design-in compatibility with the specified 1.8 V minimum operating voltage and 1.133 MHz frequency range requirements.

Selection Notes

Select this component when a fixed 88.5% duty ratio is acceptable for the target boost application. Choose over the S-8337 series if adjustable maximum duty ratio is not required. Ensure external components support the 1.8 V to 6 V input range and the desired switching frequency setting via the ROSC pin resistor.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8338 variant specifically distinguishes itself by fixing the maximum duty ratio, unlike the S-8337 series which allows duty ratio adjustment via an external resistor. Both series share similar internal architectures including UVLO and short-circuit protection circuits.

Replacement Considerations

S-8338ABEA-P8T1G and S-8338ACDC-P8T1G are compatible alternatives within the same series offering identical electrical characteristics and 8-SON packaging.