S-8338ACGA-P8T1G

Overview

The S-8338ACGA-P8T1G is a CMOS step-up switching regulator controller from the S-8338 series by ABLIC Inc. It operates within an input voltage range of 1.8V to 6V and supports a positive output configuration. The device utilizes pulse width modulation (PWM) control with a switchable oscillation frequency between 257.4kHz and 1.134MHz. It features a maximum duty cycle of 88.5% and includes protection mechanisms such as current limit, enable, and frequency control. Packaged in an 8-TSSOP surface-mount case, it functions within a temperature range of -40°C to 85°C.

Feature Summary

• Integrates a reference voltage circuit, oscillator, error amplifier, PWM controller, UVLO, and timer latch short-circuit protection.
• Supports external setting of internal oscillation frequency via the ROSC pin up to 1.133 MHz.
• Designed for low-voltage operation starting at 1.8V, suitable for portable systems.

Applications

• Power supply for LCD modules
• Portable electronic systems operating on low voltage

Procurement Notes

Verify the specific suffix P8T1G confirms the 8-TSSOP package and reel packaging format. Confirm RoHS compliance status and REACH registration details against the latest manufacturer documentation. Ensure the component is suitable for new designs despite distributor notes suggesting potential minimum order quantity restrictions or obsolescence warnings.

Selection Notes

Select this controller when a boost topology is required with an input voltage as low as 1.8V. Choose the S-8338 variant over the S-8337 if the application does not require resistor-controlled maximum duty ratio adjustment. Verify that the 8-TSSOP package fits the PCB layout constraints and that the operating temperature range meets environmental requirements.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is characterized by its CMOS technology and ability to drive step-up converters efficiently. The S-8338 model specifically differs from the S-8337 by lacking the external duty ratio control feature found in the latter.

Replacement Considerations

S-8338ACDC-P8T1G offers identical electrical specifications but uses an 8-SON(A) package instead of TSSOP. S-8338AAIA-T8T1G provides similar functionality with a TSSOP-8 package but may have different internal configurations; verify datasheet compatibility before substitution.