S-8337ABDB-T8T1G

Overview

The S-8337ABDB-T8T1G is a CMOS step-up switching regulator controller from the S-8337 series by ABLIC Inc. It operates within an input 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, while phase compensation is adjusted using components on the CC pin. The device is housed in an 8-pin TSSOP package.

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, maximum duty ratio, and phase compensation.

Applications

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

Procurement Notes

Verify the specific suffix 'DB' against official datasheets to confirm exact electrical characteristics, as variations exist within the S-8337 family. Confirm RoHS compliance status and ensure the TSSOP-8 package matches design requirements. Check for any product change notifications or obsolescence notices prior to finalizing procurement plans.

Selection Notes

Select this component when designing boost converters requiring flexible frequency and duty cycle settings. Ensure external components for the ROSC, RDuty, and CC pins are chosen to meet stability and transient response needs. Verify that the 1.8 V minimum operating voltage aligns with the system's power source capabilities.

Part Context

This part belongs to the S-8337/8338 Series, which are high-frequency PWM control switching regulator controllers designed for step-up applications. The series is characterized by its CMOS technology and ability to function efficiently in low-voltage environments, making it suitable for battery-powered devices.

Replacement Considerations

The S-8337ACDC-T8T1G and S-8337AAGB-T8T1G are documented members of the same S-8337 series family. Verify functional equivalence regarding pinout and specific parameter configurations before substitution.