S-8337AADC-T8T1G

Overview

The S-8337AADC-T8T1G is a CMOS step-up switching regulator controller from the S-8337 series, manufactured by ABLIC Inc. It operates within an input voltage range of 1.8 V to 6 V and supports a maximum internal oscillation frequency of 1.133 MHz via the ROSC pin. The device utilizes pulse width modulation (PWM) control with a maximum duty ratio adjustable through an external resistor on the RDuty pin. It features under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. The component is housed in an 8-TSSOP package and is designed for low-voltage portable systems.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient step-up regulation.
• Supports low minimum operating voltage of 1.8 V, suitable for battery-powered applications.
• Includes built-in under-voltage lockout and timer latch short-circuit protection mechanisms.

Applications

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

Procurement Notes

Verify the exact suffix T8T1G against the manufacturer's current datasheet to ensure package and tape/reel specifications match design requirements. Confirm RoHS compliance status and check for any recent Product Change Notifications (PCN) regarding material or marking changes. Ensure the ordering quantity aligns with the standard factory pack quantity of 3000 units if applicable.

Selection Notes

Select this controller when designing boost converters requiring high-frequency operation up to 1.133 MHz with adjustable duty cycle limits. Consider the 8-TSSOP package constraints and the need for external components for frequency setting (ROSC), duty ratio adjustment (RDuty), and phase compensation (CC). Verify that the input voltage range of 1.8 V to 6 V covers the system's operational requirements.

Part Context

The S-8337AADC-T8T1G belongs to the S-8337/8338 Series of high-frequency PWM control switching regulator controllers. This series is characterized by its CMOS technology and ability to operate at low voltages, making it distinct from higher-voltage industrial regulators. The 'A' in the part number typically denotes specific electrical characteristics or revisions within the S-8337 family.

Replacement Considerations

S-8337AAEA-T8T1G and S-8337ACDC-T8T1G are documented variants within the same S-8337 series offering similar step-up controller functionality in compatible packages.