LM5070MTC-50/NOPB

PWM controller, TSSOP16, -0.3V to 80V, LM5070MTC-50/NOPB, National Semiconductor

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Price:: US $2.50~4.90 / piece [Get Latest Price]

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PartNumber:: LM5070MTC-50/NOPB

Brand:: National Semiconductor - NS | Pack: TSSOP | D/C: 11+

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Products Upload time: 2012-08-17

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Part Number:LM5070MTC-50/NOPB
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Product Summary

The LM5070MTC-50/NOPB is a 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. TheLM5070MTC-50/NOPB 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.

Parametrics

LM5070MTC-50/NOPB absolute maximum ratings: (1)VIN ,RTN to VEE: -0.3V to 80V; (2)RSIG to VIN: -12V to 0V; (3)UVLO to VEE: -0.3V to 57V; (4)UVLORTN: -0.3V to 13V; (5)RCLASS, RCLP to VEE: -0.3V to 7V; (6)ARTN to RTN: -0.3V to 0.3V; (7)VCC, OUT to ARTN: -0.3V to 16V; (8)All other inputs to ARTN: -0.3V to 7V; (9)Storage Temperature: -65 to +150℃; (10)Junction Temperature: 150℃.

Features

LM5070MTC-50/NOPB features: (1)Fully Compliant 802.3af Power Interface Port; (2)80V, 1?, 400 mA Internal MOSFET; (3)Programmable Inrush Current Limit; (4)Detection Resistor Disconnect Function; (5)Programmable Classification Current; (6)Programmable Under-voltage Lockout with Programmable Hysteresis; (7)Thermal Shutdown Protection; (8)Current Mode Pulse Width Modulator; (9)Supports both Isolated and Non-Isolated Applications; (10)Error Amplifier and Reference for Non-Isolated Applications; (11)Programmable Oscillator Frequency; (12)Programmable Soft-start; (13)80% Maximum Duty Cycle Limiter, Slope Compensation (-80 device); (14)50% Maximum Duty Cycle Limiter, No Slope Compensation (-50 device); (15)800 mA Peak Gate Driver.