S-8337AADA-T8T1G

Overview

The S-8337AADA-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 PWM control with an internal oscillation frequency adjustable up to 1.133 MHz via an external resistor on the ROSC pin. The device features a minimum operating voltage of 1.8 V and supports a maximum duty ratio controlled by an external resistor on the RDuty pin. Phase compensation and gain are adjustable through components connected to the CC pin. It includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits, packaged in an 8-TSSOP format.

Feature Summary

• Integrates reference voltage circuit, oscillator, error amplifier, and PWM controller for efficient step-up regulation.
• Features low minimum operating voltage suitable for portable systems and LCD power supplies.
• Includes under-voltage lockout and timer latch short-circuit protection circuits.

Applications

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

Procurement Notes

Verify the specific suffix codes against official datasheets to confirm electrical parameters, as variations exist within the S-8337 family. Confirm package type and RoHS compliance status directly with the manufacturer or authorized distributors before ordering. Ensure design compatibility with the required input voltage range and switching frequency settings.

Selection Notes

Select this component when a low input voltage start-up capability around 1.8 V is required for boost applications. Consider the adjustable frequency and duty cycle features if precise transient response or stability tuning is needed via external RC networks. Verify that the TSSOP-8 package fits the PCB layout constraints.

Part Context

This part belongs to the S-8337/8338 Series of high-frequency PWM control switching regulator controllers. These devices are designed for applications requiring compact power solutions with low standby current and flexible configuration options for output voltage and switching frequency.

FAQ

How is the internal oscillation frequency adjusted?

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 (UVLO) circuit and a timer latch short-circuit protection circuit.