S-8337ABGB-P8T1G

Overview

The S-8337ABGB-P8T1G 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 oscillation frequency of 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 on the RDuty pin. It features under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. The component is housed in an 8-pin SON package measuring 2.9 x 2.8 mm.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient step-up regulation.
• Supports low-voltage operation starting at 1.8 V, suitable for portable systems.
• Includes built-in under-voltage lockout and timer latch short-circuit protection mechanisms.

Applications

• Power supply units for LCD displays
• Portable electronic systems requiring low-voltage operation

Procurement Notes

Verify the specific suffix P8T1G against official datasheets to confirm the exact package type and tape-and-reel specifications. Ensure compatibility with required operating temperatures ranging from -40°C to 85°C. Confirm RoHS compliance status as detailed in manufacturer documentation before procurement.

Selection Notes

Select this controller when designing boost converters requiring adjustable switching frequencies up to 1.133 MHz. Consider the external component requirements for ROSC and RDuty pins to tailor frequency and duty cycle. Evaluate the 8-SON package dimensions for PCB layout constraints in compact portable designs.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for applications needing efficient power management in space-constrained environments. The S-8337 variant specifically allows user-defined maximum duty ratios, distinguishing it from fixed-duty variants.

Replacement Considerations

S-8337AAEB-P8T1G and S-8337AADC-P8T1G are documented members of the same series with similar electrical characteristics. Verify pin compatibility and package variations between these part numbers before substitution.