S-8338ACDA-T8T1G

Overview

The S-8338ACDA-T8T1G 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 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 under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. It is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient power management.
• Features built-in under-voltage lockout and timer latch short-circuit protection for enhanced reliability.
• Allows flexible frequency setting up to 1.133 MHz through an external resistor connection.

Applications

• Power supply units for LCD displays
• Portable electronic systems operating on low voltage
• Step-up voltage regulation in battery-powered devices

Procurement Notes

Verify the specific suffix 'ACDA' against official ABLIC documentation to confirm exact electrical tolerances and factory specifications. Ensure compatibility with the required 8-TSSOP footprint and reel packaging quantity of 3000 units. Confirm RoHS compliance status and lead-free plating requirements prior to integration into the final assembly design.

Selection Notes

Select this component when a fixed maximum duty ratio of 88% is acceptable for the boost converter topology. Choose the S-8338 series over the S-8337 series if external adjustment of the maximum duty cycle via an RDuty pin is not required. Ensure the application environment supports the specified -40°C to 85°C operating temperature range.

Part Context

This part belongs to the S-8337/8338 Series of high-frequency PWM control switching regulator controllers. The S-8338 variant distinguishes itself by having a fixed maximum duty ratio, whereas the S-8337 series allows for variable duty ratio control. Both share similar core architectures including UVLO and short-circuit protection mechanisms.

Replacement Considerations

S-8338ABEC-T8T1G

FAQ

How is the switching frequency determined?

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

What protection features are included?

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