MAX738AMJA/883B

Voltage Regulators - DC DC Switching Regulators Overview

The MAX738AMJA/883B is a military-grade, 5V-output CMOS step-down switching regulator. It operates as a current-mode PWM DC-DC converter with an input voltage range of 6V to 16V. The device delivers up to 750mA of load current and features a fixed 170kHz oscillator frequency. Packaged in a CDIP-8 ceramic dual in-line format, it is designed for high-reliability applications requiring robust performance under extreme environmental conditions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Military-grade construction utilizing hermetic ceramic packaging for enhanced durability
• Integrated current-mode PWM control architecture for stable regulation
• Fixed 170kHz internal oscillator eliminates external timing components

Voltage Regulators - DC DC Switching Regulators Applications

• Avionics power distribution systems
• Space-constrained satellite electronics
• High-reliability defense communication equipment

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix /883B indicates compliance with MIL-PRF-38534 or equivalent military standards. Confirm that the package type matches the required hermetic seal specifications for your application environment. Ensure the manufacturer documentation explicitly lists this part number as qualified for space or military use before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when standard commercial parts fail to meet radiation tolerance or thermal cycling requirements. The ceramic package provides superior protection against moisture and mechanical stress compared to plastic alternatives. Consider the fixed 5V output and 750mA limit to ensure compatibility with downstream logic loads.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the Maxim Integrated MAX730/MAX738/MAX744 family of 5V step-down converters. While the commercial variants utilize plastic packages, the /883B designation signifies a specialized military qualification. These devices share identical electrical characteristics but differ in physical construction and reliability testing protocols.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements include other military-qualified versions within the MAX738 family. Verify pinout compatibility if substituting with non-Maxim equivalents. Standard commercial MAX738 variants lack the necessary hermetic sealing for harsh environments.