S-8337AABB-P8T1G

Overview

The S-8337AABB-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 supports an internal oscillation frequency up to 1.133 MHz via an external resistor on the ROSC pin. The device utilizes pulse width modulation (PWM) control with a maximum duty ratio adjustable through an external resistor connected to the RDuty pin. Phase compensation and gain are configurable using components on the CC pin. It features under-voltage lockout (UVLO) and timer latch short-circuit protection, packaged in an 8-SON (2.9x2.8 mm) surface-mount package.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for high-frequency step-up regulation
• Features low minimum operating voltage suitable for portable systems and LCD power supplies
• Includes under-voltage lockout and timer latch short-circuit protection circuits
• Allows external adjustment of oscillation frequency, maximum duty ratio, and phase compensation

Applications

• Power supply for LCD displays
• Portable electronic systems operating on low voltage
• Step-up DC-DC converter designs requiring adjustable frequency and duty cycle

Procurement Notes

Verify the specific suffix code against official ABLIC documentation to confirm exact electrical parameters such as duty ratio limits and frequency settings. Ensure the ordering information matches the required package type and environmental compliance standards. Cross-reference the manufacturer part number with authorized distributors to confirm availability and authenticity before procurement.

Selection Notes

Select this component when designing boost converters requiring flexible frequency and duty cycle configuration. Consider the 1.8 V minimum operating voltage for low-power applications. Evaluate external component requirements for ROSC, RDuty, and CC pins to meet stability and transient response specifications. Confirm compatibility with the target PCB layout for the 8-SON package.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for CMOS step-up applications, offering integrated protection features and adjustable control parameters. It serves as a core controller for external power switches in efficient power management solutions.

Replacement Considerations

S-8337AAEB-P8T1G, S-8337ACGA-P8T1G, S-8337AAHC-P8T1G, S-8337AADC-P8T1G, S-8337ABEC-T8T1G, S-8337AAHA-T8T1G, S-8337AAGB-T8T1G, S-8337ACDC-T8T1G