S-8337ACBC-T8T1G

Overview

The S-8337ACBC-T8T1G 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 utilizes pulse width modulation (PWM) control. The device supports an internal oscillation frequency adjustable up to 1.133 MHz via an external resistor. It features under-voltage lockout and timer latch short-circuit protection circuits. The component is housed in an 8-pin TSSOP package with a maximum duty ratio capability of 0.89.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient power management
• Includes under-voltage lockout and timer latch short-circuit protection for enhanced system reliability
• Allows external adjustment of oscillation frequency and maximum duty ratio for flexible design configuration

Applications

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

Procurement Notes

Verify the specific suffix codes against official ABLIC documentation to confirm output characteristics and pin compatibility. Ensure the ordering quantity aligns with manufacturer standard packaging requirements. Confirm RoHS compliance status through current datasheets before final procurement decisions.

Selection Notes

Select this component when designing boost converters requiring input voltages as low as 1.8 V. The adjustable frequency feature allows optimization for external component size. Verify that the required maximum duty ratio falls within the configurable limits defined by the RDuty pin connection specifications.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for portable applications where low input voltage and small external components are critical. The ACBC suffix denotes specific electrical parameters within the broader S-8337 product family.

Replacement Considerations

S-8337AAEB-T8T1G

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 circuit (UVLO) and a timer latch short-circuit protection circuit.