Milpitas, Calif.Linear Technology has introduced the LTC1728H-5, a tiny, accurate triple supply voltage monitor that guarantees operation across -40°C to 125°C.
The LTC1728H-5 monitors 5V, 3.3V and one adjustable trip threshold set with an external resistive divider network, giving users the flexibility to monitor voltages as low as 1-V. Offered in a tiny 5-lead SOT-23 package, the LTC1728 is the smallest triple supply monitor available, according to Linear.
The LTC1728H-5 draws 10-µA (typ) from the supplies it monitors, making it suitable for high temperature, space-limited automotive applications.
The LTC1728 offers a tight 1.5% threshold accuracy over which reset can occur, decreasing the overall voltage margin required for reliable system operation. Coupled with power supply glitch filtering, decreased voltage margin helps ensure predictable reset operation without false triggering.
Whenever one of the three monitored voltages falls below its threshold, a common open-drain reset output asserts and remains low until all three supplies are in compliance for at least 200-ms.
Pricing: Begins at $1.70-each in 1,000 piece quantities.
Datasheet: click here.
Linear Technology Corp., 1-408-432-1900, www.linear.com