S-8338ABIC-P8T1G

Overview

The S-8338ABIC-P8T1G is a CMOS step-up switching regulator controller from the S-8338 series by ABLIC Inc. It operates within an input voltage range of 1.8V to 6V and supports a maximum oscillation frequency of 1.134MHz. The device utilizes pulse width modulation (PWM) control with a maximum duty cycle of 88.5%. It features built-in under-voltage lockout and timer latch short-circuit protection circuits. The component is housed in an 8-SON package measuring 2.9x2.8mm and is rated for an operating temperature range of -40°C to 85°C.

Feature Summary

• Integrates a reference voltage circuit, oscillator, error amplifier, and PWM controller for efficient step-up regulation.
• Includes under-voltage lockout and timer latch short-circuit protection mechanisms for enhanced system reliability.
• Supports external frequency setting via the ROSC pin to optimize performance for specific application requirements.

Applications

• Power supply units for LCD displays
• Portable electronic systems requiring low voltage operation
• Battery-powered devices utilizing single-cell lithium-ion or lithium-polymer sources

Procurement Notes

Verify the exact output voltage configuration associated with the ABIC suffix against the official datasheet before procurement. Confirm that the 8-SON package dimensions align with the target PCB footprint. Ensure compliance with RoHS3 standards if required by the end product specifications. Cross-reference the part number with the manufacturer's latest documentation to confirm current design status and availability.

Selection Notes

Select this controller when designing boost converters requiring high-frequency operation up to 1.134MHz to minimize passive component size. Consider its low minimum operating voltage of 1.8V for applications powered by single-cell batteries. Evaluate the need for external frequency setting capabilities and ensure the selected inductor and diode ratings match the internal switch current limits defined in the technical specifications.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8338 variant specifically allows for adjustable maximum duty ratios via external resistors, distinguishing it from fixed-duty counterparts. The series is designed for compact power management solutions in portable electronics where space efficiency and low standby current are critical design constraints.

Replacement Considerations

S-8338AAIA-T8T1G

FAQ

How is the oscillation frequency determined?

The internal oscillation frequency can be set up to 1.133 MHz via a resistor connected to the ROSC pin.

What protection features are integrated?

The device includes an under-voltage lockout circuit (UVLO) and a timer latch short-circuit protection circuit.