S-8337ABGB-T8T1G

Overview

The S-8337ABGB-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 utilizes pulse width modulation (PWM) control with a maximum switching frequency of 1.133 MHz. The device features an adjustable internal oscillation frequency via an external resistor on the ROSC pin and allows duty ratio control through the RDuty pin. It includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. The component is housed in an 8-pin TSSOP package.

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 under-voltage lockout and timer latch short-circuit protection mechanisms

Applications

• Power supply for LCD displays
• Portable electronic systems operating on low voltage
• General step-up DC-DC conversion applications

Procurement Notes

Verify the specific suffix codes against official ABLIC documentation to ensure correct electrical characteristics and packaging options. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer, as availability may vary. Ensure the selected variant matches the required thermal and mechanical specifications for the target application.

Selection Notes

Select this controller when designing boost converters requiring high-frequency operation up to 1.2 MHz with precise duty cycle adjustment capabilities. Consider the S-8337 series for applications needing low minimum operating voltages and integrated protection features. Evaluate external component requirements for setting oscillation frequency and phase compensation to ensure stability.

Part Context

This component belongs to the S-8337/8338 Series of high-frequency PWM control switching regulator controllers. These devices are designed for CMOS technology, offering compact solutions for power management in space-constrained portable electronics. The series emphasizes efficiency and stability through adjustable frequency and duty ratio controls.

Replacement Considerations

Consult official ABLIC documentation for verified substitute part numbers within the S-8337 series or compatible families. Cross-reference pinouts and electrical parameters to ensure functional equivalence before replacement.