S-8337ACGB-T8T1G

Overview

The S-8337ACGB-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 supports a maximum oscillation frequency of 1.134 MHz. The device utilizes pulse width modulation (PWM) control with a maximum duty ratio of 0.89. Designed for surface-mount applications, it is housed in an 8-TSSOP package measuring 4.40 mm in width. The component functions as a positive output boost DC-DC switching controller.

Feature Summary

• Integrates internal oscillator, error amplifier, and PWM controller for efficient voltage regulation.
• Features timer latch short-circuit protection circuitry to enhance system reliability.
• Supports adjustable phase compensation and gain via external resistor and capacitor connections.

Applications

• Power supply systems for LCD displays
• Portable electronic devices requiring low-voltage operation
• Step-up DC-DC conversion circuits

Procurement Notes

Verify the specific suffix T8T1G corresponds to the reel packaging format and standard pin configuration. Confirm RoHS compliance status through official documentation prior to integration. Ensure the selected variant matches the required thermal and electrical specifications for the target application environment.

Selection Notes

Select this model when designing boost converters requiring high-frequency operation up to 1.2 MHz. Consider the adjustable maximum duty ratio feature for optimizing efficiency across varying load conditions. Evaluate the 8-TSSOP package dimensions against available PCB space constraints during the layout phase.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is characterized by its ability to operate at low minimum voltages, making it suitable for battery-powered portable systems. The S-8337 variant specifically allows for user-defined maximum duty ratios, unlike the fixed-ratio S-8338 series.

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 mechanisms are included?

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