S-8337AAIC-P8T1G

Overview

The S-8337AAIC-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 utilizes pulse width modulation (PWM) control. The device features an internal oscillator with a frequency settable up to 1.133 MHz via an external resistor on the ROSC pin. Maximum duty ratio is adjustable through an external resistor connected to the RDuty pin. Phase compensation and gain are configurable using components on the CC pin. It includes under-voltage lockout and timer latch short-circuit protection circuits.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller in a single CMOS chip
• Features low minimum operating voltage suitable for portable systems
• Includes built-in under-voltage lockout and short-circuit protection mechanisms

Applications

• Power supply for LCD displays
• Portable electronic systems operating on low voltage
• Step-up switching regulator designs requiring adjustable frequency

Procurement Notes

Verify the specific suffix 'P8T1G' against official ABLIC documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with required input voltage ranges and external component values for oscillator and duty cycle settings before procurement.

Selection Notes

Select this controller when designing boost converters requiring adjustable switching frequencies up to 1.2 MHz. Consider the S-8338 series if a fixed maximum duty ratio is preferred over the adjustable RDuty pin configuration found in the S-8337 series.

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 conversion from low input voltages. The S-8337 variant specifically offers flexibility through adjustable duty ratio and oscillation frequency parameters.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.