0
ACTIVE
PoE standards supported |
802.3at Type 1 (802.3af) |
PD power level |
13W |
DC/DC control |
PD and DC/DC |
Vin (max) (V) |
75 |
Vin (min) (V) |
1.8 |
PoE current limit (min) (mA) |
300 |
PoE inrush limit (mA) (typ) (A) |
Programmable |
rDS(on) per FET (typ) (mΩ) |
1000 |
Features |
Error amplifier, Programmable UVLO, Thermal shutdown |
Fault response |
Thermal Cycling |
Operating temperature range (°C) |
-40 to 125 |
Rating |
Catalog |
TSSOP (PW)-16-32 mm² 5 x 6.4
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The LM5070 power interface port and pulse width modulation (PWM) controller provides a complete integrated solution for Powered Devices (PD) that connect into Power over Ethernet (PoE) systems. The LM5070 integrates an 80V, 400mA line connection switch and associated control for a fully IEEE 802.3af compliant interface with a full featured current mode pulse width modulator dc-dc converter. All power sequencing requirements between the controller interface and switch mode power supply (SMPS) are integrated into the IC. Two options are available providing either an 80% maximum duty cycle limit with slope compensation (on the –80 suffix) device or a 50% maximum duty cycle limit and no slope compensation on the (–50 suffix) device.
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