S-8337ACDB-P8T1G

Overview

The S-8337ACDB-P8T1G is a CMOS step-up switching regulator controller manufactured by ABLIC Inc. It operates within a supply voltage range of 1.8 V to 6 V and utilizes PWM control with an internal oscillation frequency adjustable up to 1.134 MHz via an external resistor. The device features a maximum duty ratio of 0.89, configurable through an external resistor. Phase compensation and gain are adjustable using external components connected to 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 for efficient power management
• Features adjustable maximum duty ratio controlled by external resistance
• Includes under-voltage lockout and timer latch short-circuit protection mechanisms

Applications

• Power supply for LCD panels
• Portable electronic systems operating on low voltage
• DC-DC boost converter designs requiring high-frequency operation

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and electrical characteristics. Confirm RoHS compliance status and environmental declarations prior to integration. Ensure design compatibility with the specified operating temperature range and voltage limits defined in the manufacturer documentation.

Selection Notes

Select this component when designing boost converters requiring a wide input voltage range starting from 1.8 V. The adjustable frequency and duty ratio allow optimization for specific inductor sizes and transient response requirements. Consider the 8-SON package dimensions for PCB layout constraints.

Part Context

This part belongs to the S-8337 series of high-frequency PWM control switching regulators. It is designed as a cost-effective solution for portable applications where space and efficiency are critical. The series supports flexible configuration through external passive components to meet diverse system requirements.

Replacement Considerations

S-8337ACGA-P8T1G

FAQ

How is the oscillation frequency determined?

The internal oscillation frequency is set up to 1.134 MHz via a resistor connected 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.