MAX5972A/MAX5972B 19-4924 Rev 0 8/09 IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with Integrated Power MOSFET General Description Features S Sleep Mode and Green Power (MAX5972B) The MAX5972A/MAX5972B provide a complete inter- S IEEE 802.3af/at Compliant face for a powered device (PD) to comply with the IEEE 802.3af/at standard in a power-over-ethernet (PoE) sys- S 2-Event Classification or an External Wall Adapter Indicator Output tem. The MAX5972A/MAX5972B provide the PD with a S Simplified Wall Adapter Interface detection signature, classification signature, and an inte- S PoE Classification 05 grated isolation power switch with inrush current control. During the inrush period, the MAX5972A/MAX5972B limit S 100V Input Absolute Maximum Rating the current to less than 180mA before switching to the S Inrush Current Limit of 180mA Maximum higher current limit (720mA to 880mA) when the isolation S Current Limit During Normal Operation Between power MOSFET is fully enhanced. The devices feature 720mA and 880mA an input UVLO with wide hysteresis and long deglitch S Current Limit and Foldback time to compensate for twisted-pair cable resistive drop S Legacy UVLO at 36V and to assure glitch-free transition during power-on/-off S LED Driver with Programmable LED Current conditions. The MAX5972A/MAX5972B can withstand up (MAX5972B) to 100V at the input. S Overtemperature Protection S Thermally Enhanced, 5mm x 5mm, 16-Pin TQFN The MAX5972A/MAX5972B support a 2-event classifica- tion method as specified in the IEEE 802.3at standard and provide a signal to indicate when probed by a Type Ordering Information 2 power sourcing equipment (PSE). The devices detect the presence of a wall adapter power source connec- PIN- SLEEP PART TEMP RANGE tion and allow a smooth switch over from the PoE power PACKAGE MODE source to the wall power adaptor. MAX5972AETE+ -40NC to +85NC 16 TQFN-EP** The MAX5972A/MAX5972B also provide a power-good MAX5972BETE+* -40NC to +85NC 16 TQFN-EP** Yes (PG) signal, two-step current limit and foldback, over- +Denotes a lead(Pb)-free/RoHS-compliant package. temperature protection, and di/dt limit. A sleep mode *Future productcontact factory for availability. **EP = Exposed pad. feature in the MAX5972B provides low-power consump- tion while supporting Maintain Power Signature (MPS). Pin Configurations A green sleep mode feature in the MAX5972B further reduces power consumption to comply with green power requirements while still supporting MPS. The MAX5972B TOP VIEW also features an LED driver that is automatically acti- 16 15 14 13 vated during sleep mode or manually activated during normal operation. + The MAX5972A/MAX5972B are available in a 16-pin, N.C. 1 12 CLS 5mm x 5mm, TQFN power package. These devices are rated over the -40NC to +85NC extended temperature V 2 11 2EC DD range. MAX5972B DET 3 10 PG Applications EP* I.C. 4 9 WAD IEEE 802.3af/at Powered Devices IP Phones, Wireless Access Nodes, IP Security Cameras 5 6 7 8 WiMAXK Base Station TQFN 5mm 5mm *EP = EXPOSED PAD. CONNECT TO V . SS WiMAX is a trademark of WiMAX Forum. Pin Configurations continued at end of data sheet. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE PRELIMINARY V GEN SS V SS WK RTN SL RTN LEDX-ON Electronics Largest Supplier of Electrical and Electronic Components Click to view similar products for Hot Swap Voltage Controllers category: Click to view products by Maxim manufacturer: Other Similar products are found below : LTC4227CUFD-4 PBF LTC4212IMS ADM1075-2ARUZ-RL7 LM5067MW-1/NOPB ADM1075-1ARUZ-RL7 MAX5969BETB+T MIC22700YML-TR LTC4223CDHD-1 PBF MAX40200AUK+T LTC4224IDDB-2 TRMPBF LT1640LIS8 PBF LTC4217CDHC-12 PBF LT1640ALCS8 PBF LT4294HDD PBF LTC4253CGN PBF LTC4211CMS8 PBF LTC4230CGN PBF LTC4224IMS-1 PBF LTC4216IMS PBF LTC4212IMS PBF LTC4260CGN PBF LTC4227CGN-2 PBF LTC4244IGN PBF LTC4212CMS PBF LT4250HCN8 PBF ADM1276-3ACPZ-RL LTC4226IUD-1 PBF LT1640AHCN8 ADM1075-2ACPZ ADM1075-1ACPZ ADM1073ARUZ ADM1073ARUZ-REEL7 ADM1075-1ARUZ ADM1075-2ARUZ ADM1170-1AUJZ-RL7 ADM1171-2AUJZ-RL7 ADM1172-1AUJZ-RL7 ADM1172-2AUJZ-RL7 ADM1176-1ARMZ-R7 ADM1177-1ARMZ-R7 ADM1177-2ARMZ-R7 ADM1178-1ARMZ-R7 ADM1275-3ARQZ ADM1275-1ARQZ ADM1275-3ARQZ-R7 ADM1276-3ACPZ ADM1278-1BCPZ ADM4210-1AUJZ-RL7 ADM1270ARQZ ADM1275- 2ARQZ