BD48K55G-TL

Overview

The BD48K55G-TL is a standard voltage detector from ROHM Semiconductor, currently designated as end-of-life. It features an N-channel open-drain output with a typical under-voltage detection threshold of 5.5V and ±1% precision. The device operates within a reset active voltage range of 0.95V to 10V. Circuit current consumption is 0.60μA (ON) and 0.85μA (OFF) at Vs=4.8V. It lacks manual reset, watchdog timer, and automotive qualification. The component is housed in an SSOP3 package with a temperature range of -40°C to 105°C.

Feature Summary

• Provides precise monitoring of supply voltage levels using an N-channel open-drain output structure.
• Designed for low power consumption applications with minimal circuit current draw during operation.
• Includes internal hysteresis to prevent output oscillation during voltage transitions.

Applications

• Monitoring battery voltage levels in portable electronic devices
• Supervising power supplies in embedded systems requiring simple reset signals
• Protecting microcontrollers from undervoltage conditions

Procurement Notes

This component is officially classified as end-of-life or last-time buy status by the manufacturer. Verification of final availability through authorized distributors is required before procurement planning. Designers should initiate replacement strategies immediately due to discontinuation. Confirm RoHS compliance and specific ordering suffixes such as TL for tape-and-reel packaging when sourcing remaining stock.

Selection Notes

Select this part only if the 5.5V detection threshold aligns precisely with system requirements. Consider the SSOP3 package constraints for PCB layout. Evaluate alternative components from the BD52 series or newer BD48 variants if long-term supply stability is critical. Verify that the open-drain output interface matches the receiving logic input specifications without additional pull-up requirements beyond standard design practices.

Part Context

The BD48K55G belongs to the BD48xxx series of highly accurate, low-current voltage detectors. This family distinguishes itself with N-channel open-drain outputs, contrasting with the CMOS outputs found in the BD49xxx series. These devices are engineered for supervisory circuits where precise voltage monitoring and low standby current are essential for extending battery life in compact electronic designs.

Replacement Considerations

BD5250G-1TR is listed as a similar specification replacement with comparable detection voltage and output type.

FAQ

Does the BD48K55G include a manual reset function?

No, the BD48K55G does not support manual reset functionality.

What is the operating temperature range for this voltage detector?

The device operates within a temperature range of -40°C to 105°C.