Product category: Power Supply ICs and Controllers
News Release from: National Semiconductor | Subject: LM5070
Edited by the Electronicstalk Editorial Team on 08 October 2004
Ethernet power comes down to single-chip
solution
The LM5070 is a single-chip power device claimed to dramatically simplify the design of a wide variety of systems using power over Ethernet.
The LM5070 is billed as the first single-chip solution to feature the high performance and tiny package footprint needed to dramatically simplify the design of a wide variety of systems using power over Ethernet (PoE) As the name implies, PoE networks power devices such as IP phones, security cameras, wireless local area network (WLAN) nodes and even musical instruments through Ethernet networking cables and ports
This article was originally published on Electronicstalk on 5 Jan 2001 at 8.00am (UK)
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Whereas competing solutions use two or three chips, National's LM5070 is the industry's first single-chip power device interface port and pulsewidth modulator (PWM) controller that meets the IEEE802.3af standard.
The LM5070 integrates an 80V, 400mA line connection switch and associated PoE interface circuits with a DC/DC controller that steps down the 48V inp