S-8337AAGC-T8T1G

Overview

The S-8337AAGC-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 internal oscillation frequency is adjustable up to 1.133 MHz via an external resistor connected to the ROSC pin. The maximum duty ratio is configurable through an external resistor on the RDuty pin. Phase compensation and gain are adjusted using components connected to the CC pin. The device includes under-voltage lockout and timer latch short-circuit protection circuits.

Feature Summary

• Configurable PWM maximum duty ratio via external resistor
• Adjustable internal oscillation frequency up to 1.133 MHz
• Integrated under-voltage lockout and short-circuit protection

Applications

• Power supply for LCD panels
• Portable systems operating on low voltage

Procurement Notes

Verify the specific suffix 'GC' against official datasheets to confirm exact factory settings or package variations. Confirm RoHS compliance status as indicated in current documentation. Check component availability and obsolescence status before finalizing designs.

Selection Notes

Select this controller when designing boost converters requiring low minimum operating voltage and high-frequency operation. Ensure external components match the required frequency and duty ratio specifications. Verify thermal management requirements for the TSSOP-8 package.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. These devices are designed for applications requiring efficient power conversion at low input voltages. The series integrates essential protection features to ensure stable operation in portable electronic devices.

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 circuits are included?

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