S-8337AABA-T8T1G

Overview

The S-8337AABA-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 features under-voltage lockout and timer latch short-circuit protection, packaged in an 8-pin TSSOP.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, PWM controller, UVLO, and short-circuit protection circuits.
• Supports low-voltage operation starting at 1.8 V for portable systems.
• Allows external adjustment of oscillation frequency up to 1.133 MHz.
• Enables customization of maximum PWM duty ratio via external resistance.

Applications

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

Procurement Notes

Verify the specific suffix codes against the official datasheet to confirm electrical characteristics and package details. Ensure compatibility with required input voltage ranges and switching frequencies. Confirm RoHS compliance status and environmental certifications prior to integration. Check for any product change notifications or obsolescence notices affecting long-term availability.

Selection Notes

Select this component when designing boost converters requiring flexible frequency and duty cycle settings. Suitable for applications needing low minimum operating voltages. Compare with the S-8338 series if fixed maximum duty ratios are acceptable. Ensure external passive components match the specified pin connections for stability and transient response optimization.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. These devices are designed as CMOS step-up regulators ideal for battery-powered applications. The series distinguishes itself by allowing user-defined frequency and duty cycle parameters, offering design flexibility compared to fixed-parameter alternatives.

Replacement Considerations

S-8337ABEC-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 features are included?

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