S-8337ACDA-T8T1G

Overview

The S-8337ACDA-T8T1G is a CMOS step-up switching regulator controller from the S-8337 series, manufactured by ABLIC Inc. It operates within a supply voltage range of 1.8 V to 6 V and utilizes pulse width modulation (PWM) control. The device supports an internal oscillation frequency adjustable up to 1.133 MHz via an external resistor connected to the ROSC pin. It features a maximum duty ratio controllable through an external resistor on the RDuty pin. The component is housed in an 8-TSSOP package with a width of 4.40 mm.

Feature Summary

• Integrates under voltage lockout circuitry and timer latch short-circuit protection for enhanced operational safety.
• Allows adjustment of phase compensation and gain values using external resistors and capacitors connected to the CC pin.
• Supports low-voltage operation starting at 1.8 V, suitable for portable systems.

Applications

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

Procurement Notes

Verify the specific suffix ACDA against official datasheets to confirm exact electrical characteristics, as variations exist within the S-8337 family. Confirm availability status directly with authorized distributors, as stock levels fluctuate. Ensure compliance with RoHS directives and check for any product change notifications that may affect material composition or performance specifications prior to procurement.

Selection Notes

Select this component when designing boost converter applications requiring high-frequency PWM control and adjustable duty cycles. Consider the S-8338 series if a fixed maximum duty ratio is acceptable instead of external adjustment. Evaluate external component requirements for setting oscillation frequency and phase compensation to ensure stability across the intended operating temperature range of -40°C to 85°C.

Part Context

This part belongs to the S-8337/8338 series of high-frequency step-up switching regulator controllers. These devices are designed for efficient power management in battery-operated equipment. The series distinguishes itself by offering flexible configuration options for frequency and duty cycle, enabling optimization for various load conditions and efficiency targets in compact form factors.

Replacement Considerations

The S-8338ABEC-T8T1G is a related variant within the same series. Note that the S-8338 series features a fixed maximum duty ratio, whereas the S-8337 series allows external adjustment. Verify functional compatibility regarding control logic and pinout before substitution.