Packaging information
| Package | Pins TSSOP (PW) | 16 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 92 | TUBE |
Features for the LM5070
- Fully Compliant 802.3af Power Interface Port
- 80V, 1Ω, 400 mA Internal MOSFET
- Programmable Inrush Current Limit
- Detection Resistor Disconnect Function
- Programmable Classification Current
- Programmable Under-voltage Lockout with Programmable Hysteresis
- Thermal Shutdown Protection
- Current Mode Pulse Width Modulator
- Supports Both Isolated and Non-Isolated Applications
- Error Amplifier and Reference for Non-Isolated Applications
- Programmable Oscillator Frequency
- Programmable Soft-Start
- 80% Maximum Duty Cycle Limiter, Slope Compensation (-80 device)
- 50% Maximum Duty Cycle Limiter, No Slope Compensation (-50 device)
- 800 mA Peak Gate Driver
Packages
- TSSOP-16
- WSON-16 (5 mm x 5 mm)
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Description for the LM5070
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.