S-8337AADB-T8T1G

Overview

The S-8337AADB-T8T1G is a CMOS step-up switching regulator controller from the S-8337 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 device supports an internal oscillation frequency adjustable up to 1.133 MHz via an external resistor on the ROSC pin. It features a maximum duty ratio controllable through an external resistor connected to the RDuty pin. The component is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates under-voltage lockout and timer latch short-circuit protection circuits for enhanced operational safety.
• Allows flexible configuration of maximum PWM duty ratio using an external resistor connected to the RDuty pin.
• Supports phase compensation and gain adjustment via external resistors and capacitors connected to the CC pin.

Applications

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

Procurement Notes

Verify the specific suffix 'ADB' against official datasheets to confirm exact electrical characteristics, as variations exist within the S-8337 family. Confirm RoHS compliance status and ensure the TSSOP-8 package matches design requirements. Check current availability and lead times directly with authorized distributors or the manufacturer.

Selection Notes

Select this component when designing boost converter circuits requiring high-frequency operation up to 1.2 MHz. It is suitable for applications needing low minimum operating voltages starting at 1.8 V. Ensure external components support the required frequency setting and duty ratio adjustments for stable transient response.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. These devices are designed primarily for portable systems and LCD power supplies where low input voltage operation is critical. The series integrates essential protection features and allows extensive parameter tuning through external passive components.

Replacement Considerations

S-8337AAEA-T8T1G

FAQ

How is the oscillation frequency determined?

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

What protection mechanisms are included?

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