S-8338ABHA-P8T1G

Overview

The S-8338ABHA-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 1.8 V to 6 V and utilizes pulse width modulation (PWM) control. The device features a fixed maximum duty ratio of 88.5% and supports an internal oscillation frequency adjustable up to 1.134 MHz via an external resistor. It provides current limit, enable, and frequency control characteristics. The component is housed in an 8-SON package with dimensions of 2.9x2.8 mm and functions as a positive output boost DC-DC switching controller.

Feature Summary

• Integrates under-voltage lockout and timer latch short-circuit protection circuits for enhanced system reliability.
• Allows adjustment of phase compensation and gain values through external components connected to the CC pin.
• Supports flexible operation stability and transient response tuning for diverse application requirements.

Applications

• Power supply units for liquid crystal displays
• Portable electronic systems operating on low voltages

Procurement Notes

Verify the specific suffix P8T1G against official datasheets to confirm package type and tape-and-reel specifications. Ensure compatibility with the required switching frequency settings and duty cycle constraints before integration. Confirm RoHS compliance status and check for any product change notifications affecting material composition or manufacturing location.

Selection Notes

Select this controller when a fixed high duty ratio is acceptable for the target boost conversion ratio. Consider the need for external resistors to set the oscillation frequency and capacitors for soft-start timing. Evaluate the thermal performance within the specified operating temperature range and ensure the available drive current meets the external MOSFET gate requirements.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8338 variant distinguishes itself by offering a fixed maximum duty ratio, unlike the adjustable duty ratio found in the S-8337 series. Both series share similar core architectures including reference voltage circuits and error amplifiers.

Replacement Considerations

S-8338AAIA-T8T1G: Compatible alternative within the same series featuring identical functional parameters and package options.

FAQ

How is the internal oscillation frequency adjusted?

The internal oscillation frequency can be set up to 1.134 MHz by connecting a resistor to the ROSC pin.

What protection features are included?

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