S-8337ABFA-P8T1G

Overview

The S-8337ABFA-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 device features an internal oscillator with a frequency adjustable up to 1.133 MHz via an external resistor connected to the ROSC pin. 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. It 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
• Supports high-frequency operation with externally adjustable oscillation frequency up to 1.133 MHz
• Allows customization of maximum duty ratio via external resistor connection
• Enables stability tuning through external phase compensation and gain adjustment components

Applications

• Power supply for LCD panels
• Portable systems operating on low voltage
• Step-up DC-DC converter designs requiring adjustable frequency

Procurement Notes

Verify the specific suffix P8T1G against official datasheets to confirm package type and tape/reel specifications. Confirm RoHS compliance status and REACH registration details prior to integration. Ensure ordering quantities align with manufacturer standard packaging requirements. Cross-reference part numbers with current product change notifications to verify material composition updates.

Selection Notes

Select this component when designing boost converters requiring input voltages as low as 1.8 V. Choose based on required switching frequency ranges achievable through external resistor selection. Consider the TSSOP-8 or SON package availability depending on board space constraints. Evaluate thermal performance and external component values for optimal transient response and loop stability.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for portable applications needing efficient power management at low input voltages. Variants differ primarily in package types and fixed versus adjustable duty ratio configurations. The S-8337 family provides flexibility for custom power supply designs compared to fixed-function regulators.

Replacement Considerations

S-8337ACFA-P8T1G shares identical electrical characteristics and pinout compatibility within the same series.