BD49K34G-TL

Overview

The BD49K34G-TL is a CMOS output voltage detector IC from the BD49 series, featuring a fixed detection threshold of 3.4V with ±1% accuracy. It operates within a supply voltage range of 0.95V to 10V and provides an active-low reset signal without manual reset or watchdog timer functions. The device exhibits low power consumption, drawing 0.60μA in the ON state and 0.85μA in the OFF state at Vs=4.8V. It utilizes a 3-pin SSOP package with a unique 1-pin ground configuration.

Feature Summary

• CMOS output structure for direct interface with digital logic
• High precision voltage detection with ±1% threshold accuracy
• Ultra-low current consumption suitable for battery-powered applications
• Compact 3-pin SSOP package with rotated pinout

Applications

• Processor supervisor circuits requiring precise voltage monitoring
• Battery-operated devices needing low standby current
• Portable electronics with limited power budgets
• Industrial control systems requiring reliable reset signals

Procurement Notes

Verify component authenticity through authorized distributors. Confirm RoHS compliance status as indicated in official documentation. Check manufacturing lifecycle status since this part may be subject to discontinuation notices. Ensure proper handling procedures for moisture-sensitive devices during storage and assembly processes.

Selection Notes

Select this component when precise voltage monitoring is required with minimal power consumption. The CMOS output allows direct connection to microcontrollers without additional level shifting. Consider the specific 3.4V threshold requirement and operating temperature range compatibility with your system design constraints.

Part Context

Part of ROHM's BD49xxx series of high-accuracy voltage detectors. This family offers various detection voltages from 2.3V to 6.0V in 0.1V increments. The BD49K34G-TL specifically targets applications requiring 3.4V monitoring with enhanced precision compared to standard voltage detectors.

Replacement Considerations

BD5234G-1TR is listed as a recommended replacement with similar specifications. Note differences in package type (SSOP5 vs SSOP3) and output configuration (open drain vs CMOS). Verify electrical parameter compatibility before substitution.