S-8337ACAB-P8T1G

Overview

The S-8337ACAB-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. It is housed in an 8-pin SON package measuring 2.9 mm by 2.8 mm.

Feature Summary

• Integrates under-voltage lockout and timer latch short-circuit protection circuits for enhanced operational safety.
• Allows adjustable maximum duty ratio through an external resistor connected to the RDuty pin.
• Supports phase compensation and gain adjustment using external resistors and capacitors connected to the CC pin.

Applications

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

Procurement Notes

Verify the specific suffix P8T1G corresponds to the 8-SON package variant rather than the TSSOP configuration found in other series members. Confirm RoHS compliance status and check for any Product Change Notifications regarding material updates before finalizing procurement orders.

Selection Notes

Select this component when designing boost converters requiring a minimum operating voltage of 1.8 V. Ensure the application benefits from the adjustable duty cycle feature provided by the RDuty pin, as opposed to the fixed duty cycle characteristics of the S-8338 series variants.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. While the S-8338 series features a fixed maximum duty ratio, the S-8337 series allows for user-defined duty ratios, offering greater flexibility for specific step-up conversion requirements in compact portable designs.

Replacement Considerations

S-8337ACHB-T8T1G shares identical electrical specifications but utilizes a TSSOP-8 package instead of the SON format. Verify that the PCB footprint accommodates the physical dimensions of the selected package variant during replacement planning.

FAQ

How is the oscillation frequency determined?

The internal oscillation frequency is set externally by connecting a resistor to the ROSC pin, allowing frequencies up to 1.133 MHz.

What distinguishes the S-8337 series from the S-8338 series?

The S-8337 series allows the maximum duty ratio to be controlled via an external resistor on the RDuty pin, whereas the S-8338 series has a fixed maximum duty ratio.