S-8337ABIC-P8T1G

Overview

The S-8337ABIC-P8T1G 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 on the ROSC pin. The maximum duty ratio is configurable through an external resistor connected to the RDuty pin. Phase compensation and gain are adjusted using components on the CC pin. The device includes under-voltage lockout and timer latch short-circuit protection circuits.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, PWM controller, UVLO, and short-circuit protection.
• Features adjustable internal oscillation frequency up to 1.133 MHz via external resistor.
• Allows user-defined maximum duty ratio control through external resistor connection.

Applications

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

Procurement Notes

Verify the specific suffix 'P8T1G' against official ABLIC documentation to confirm the package type and reel quantity. Ensure the input voltage requirements align with the 1.8 V to 6 V operational range specified in the datasheet. Confirm RoHS compliance status and check for any product change notifications that may affect material composition or manufacturing location prior to procurement.

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 flexible duty cycle adjustment via external resistors. Consider the TSSOP-8 or SON package options based on board space constraints. Verify thermal performance and stability requirements regarding phase compensation adjustments before finalizing the design.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8337 variant specifically allows for adjustable maximum duty ratios, distinguishing it from the fixed-duty S-8338 series. These controllers are designed for efficient power management in compact electronic devices requiring step-up voltage conversion capabilities.

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 features are included?

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