S-8337ACEB-P8T1G

Overview

The S-8337ACEB-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 features an internal oscillator with a frequency adjustable up to 1.134 MHz via an external resistor. The device utilizes PWM control with a maximum duty ratio configurable through an external resistor connected to the RDuty pin. It includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. The component is housed in an 8-SON package measuring 2.9 x 2.8 mm.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient power management.
• Supports low minimum operating voltage of 1.8 V, suitable for portable systems.
• Features programmable oscillation frequency and maximum duty ratio via external components.
• Includes built-in under-voltage lockout and short-circuit protection mechanisms.

Applications

• Power supply for LCD panels
• Portable electronic systems requiring low voltage operation
• Step-up DC-DC converter designs

Procurement Notes

Verify the specific suffix P8T1G corresponds to the 8-SON package configuration when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure ordering quantities align with standard reel packaging requirements specified by ABLIC Inc. for this product line.

Selection Notes

Select this controller for applications requiring high-frequency operation up to 1.134 MHz and flexible duty cycle adjustment. Consider the 1.8 V minimum operating voltage for battery-powered devices. Evaluate external component values for ROSC, RDuty, and CC pins to optimize stability and transient response according to specific circuit requirements.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8337 variant allows user-defined maximum duty ratios, distinguishing it from the S-8338 series which has a fixed maximum duty ratio. Both series share similar core architectures including UVLO and protection circuits.

Replacement Considerations

S-8337ACAA-P8T1G

FAQ

How is the oscillation frequency adjusted?

The internal oscillation frequency can be set up to 1.133 MHz by connecting a resistor to the ROSC pin.

What protection features are included?

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