S-8337ACAA-P8T1G

Overview

The S-8337ACAA-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 supports an internal oscillation frequency adjustable up to 1.134 MHz via an external resistor. The device features a maximum duty ratio of 0.89 and utilizes pulse width modulation (PWM) control. It is housed in an 8-SON package measuring 2.9 x 2.8 mm and functions within a temperature range of -40°C to 85°C.

Feature Summary

• Integrates a reference voltage circuit, oscillator, error amplifier, PWM controller, under voltage lockout, and timer latch short-circuit protection.
• Allows adjustment of phase compensation and gain values through external resistors and capacitors connected to the CC pin.
• Enables customization of the maximum PWM duty ratio using an external resistor connected to the RDuty pin.

Applications

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

Procurement Notes

Verify the specific suffix P8T1G against official documentation to confirm the 8-SON package type and reel packaging configuration. Ensure compatibility with the required operating temperature range and input voltage specifications before integration. Confirm RoHS compliance status as indicated in current manufacturer statements.

Selection Notes

Select this component when designing boost converter circuits requiring high-frequency operation up to 1.134 MHz. It is suitable for applications needing a low minimum operating voltage of 1.8 V. Consider the 8-SON package dimensions for space-constrained portable designs. Verify that the external component values for ROSC and RDuty pins meet the desired frequency and duty cycle requirements.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for step-up applications, distinguishing itself from the S-8338 variant which has a fixed maximum duty ratio. The S-8337 series offers flexibility in setting the maximum duty ratio externally.

FAQ

How is the internal oscillation frequency adjusted?

The internal oscillation frequency can be set up to 1.134 MHz by connecting a resistor to the ROSC pin.

What protection features are included?

The device includes an under voltage lockout circuit (UVLO) and a timer latch short-circuit protection circuit.