AN8049SH-E1

DC DC Switching Controllers Overview

The AN8049SH-E1 is a three-channel PWM DC-DC converter control IC designed for low-voltage operation. It integrates two step-up outputs and one step-down or polarity inverting output, minimizing external component count. The device operates from a supply voltage as low as 1.8 V, enabling use with two dry batteries. Key electrical parameters include a wide operating supply voltage range of 1.8 V to 14 V, a high-precision reference voltage circuit with ±1% accuracy, and an error amplifier accuracy of ±1.5%. It supports switching frequencies from 20 kHz to 1 MHz and features a fixed duty factor of 86%, adjustable via an external resistor.

DC DC Switching Controllers Feature Summary

• Integrates three-channel PWM control for two step-up and one step-down/inverting outputs
• Operates from low supply voltages starting at 1.8 V
• Includes on/off sequence control pins for each channel
• Features timer latch short-circuit protection and UVLO

DC DC Switching Controllers Applications

• Electronic equipment requiring compact power supplies
• Battery-operated devices using two dry batteries
• Systems needing multiple regulated voltage rails from a single source

DC DC Switching Controllers Procurement Notes

Verify the exact suffix (E1) against the manufacturer's current product status, as some listings indicate obsolete status. Confirm package type SSOP-24D dimensions and lead pitch match design requirements. Ensure compatibility with required switching frequency ranges and duty cycle adjustments before finalizing procurement.

DC DC Switching Controllers Selection Notes

Select this IC when designing multi-rail power systems from low-voltage sources like two-cell batteries. Consider its wide input voltage range and integrated protection features. Evaluate the need for adjustable duty cycles versus the default 86% setting. Verify that the SSOP-24D package fits the PCB layout constraints.

DC DC Switching Controllers Part Context

The AN8049SH series belongs to Panasonic's family of low-voltage DC-DC converter controllers. Variants such as AN8049FHN offer alternative QFN packaging. These components are engineered for miniaturized applications where space and efficiency are critical, supporting both positive and negative output configurations.

DC DC Switching Controllers Replacement Considerations

Check Panasonic's official substitution list for direct replacements. Alternative packages like AN8049FHN may be available but require pinout verification. No cross-manufacturer substitutes are confirmed without specific datasheet equivalence data.