MAX5910/MAX5917 19-1706 Rev 0 7/01 +65V Simple Swapper Hot-Swap Switches General Description Features The MAX5910/MAX5917 are fully integrated hot-swap Provides Safe Hot Swap for +10V to +65V Power switches for positive supply rails. These devices allow Supplies the safe insertion and removal of circuit cards into live IEEE 802.3af Compliant (MAX5917A) backplanes or ports without causing glitches on the backplane power-supply rail. They also monitor various Startup into 500F Load (MAX5917A) circuit parameters and disconnect the load if a fault condition occurs, alerting the host with a logic-level 280mA Current Limit for MAX5910 IFAULT output. The MAX5910/MAX5917 operate over a 567mA Current Limit for MAX5917A +10V to +65V input voltage range. They are designed to permit hot plugging of an internet appliance such as 420mA Current Limit for MAX5917B an IP phone but are not limited to that application. Zero-Current Load Detection During startup, an internal power FET regulates the cur- rent between the backplane power source and the load Integrated 2.2 Power FET to 280mA for the MAX5910, 567mA for the MAX5917A, Status Output Reports Fault Conditions and 420mA for the MAX5917B. After startup, the FET is fully enhanced to reduce its on-resistance. To ensure Internal Switch-Protection Circuitry robust operation, the MAX5910/MAX5917 contain built- Built-In Thermal Shutdown in safety features that prevent damage to the internal FET. They include an enable input, which responds to positive logic signals (+3.3V or +5V), allowing the host system to disconnect the load. The MAX5910/MAX5917 Simple Swapper hot-swap ICs Ordering Information monitor four parameters for fault conditions: undervoltage lockout (UVLO), power-not-good, zero-current detection, PART TEMP. RANGE PIN-PACKAGE and thermal shutdown. These devices are available in the MAX5910ESA -40C to +85C8 SO extended temperature range, -40C to +85C. The MAX5917AESE* -40C to +85C 16 SO MAX5910 comes in an 8-pin SO package and the MAX5917A/B is available in a 16-pin SO package. MAX5917BESE -40C to +85C 16 SO Applications *Future productcontact factory for availability. IP Phones Power-Over-LAN Power-Over-MDI Typical Operating Circuit Remote Power Distribution Network Routers V (+42V) IN Network Switches V IN V OUT Internet Appliances MAX5910 10k +3.3V MAX5917 IFAULT UVLO L O PGOOD ON 10k A ENABLE D OFF GND Pin Configurations appear at end of data sheet. Simple Swapper is a trademark of Maxim Integrated Products, Inc. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.+65V Simple Swapper Hot-Swap Switches ABSOLUTE MAXIMUM RATINGS V , V to GND................................................-0.3V to +70.0V Operating Temperature Range ...........................-40C to +85C IN OUT ENABLE to GND..................................................-0.3V to +12.0V Maximum Junction Temperature .....................................+150C PGOOD, IFAULT to GND ....................................-0.3V to +12.0V Storage Temperature Range .............................-60C to +150C UVLO to GND ..............................................-0.3V to (V + 0.3V) Lead Temperature (soldering 10s) ..................................+300C IN PGOOD, IFAULT Sink Current ............................................10mA Continuous Power Dissipation (T = +70C) A 8-Pin SO (derate 5.9mW/C above +70C)..................470mW 16-Pin SO (derate 12.9mW/C above +70C)............1039mW Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = +42V, GND = 0, UVLO = open circuit, V = +3.3V, and T = -40C to +85C, unless otherwise noted. Typical values are IN ENABLE A at T = +25C.) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Voltage Range V 10 65 V IN Supply Current I V = 10V to 65V (Note 1) 1.2 2.5 mA IN IN MAX5910 250 280 310 V = V - 5V, OUT IN Output Current Limit I MAX5917A 510 567 623 mA LIM V = 10V to 65V IN MAX5917B 370 420 470 MAX5910 240 Continuous Operating Output I (Note 2) MAX5917A 400 mA OUT Current MAX5917B 350 V = 10V to 65V, IN MAX5910, I = 200mA OUT DMOS On-Resistance R 2.2 4 DS(ON) MAX5917A, I = 400mA OUT MAX5917B, I = 300mA OUT ENABLE Voltage Logic Low V 0.8 V LOW ENABLE Voltage Logic High V 2.4 V HIGH ENABLE High Input Current I V = +5V 1 A IH ENABLE IFAULT Output Leakage Current I IFAULT = 10V, I > (IF + IF)1 A OH OH TH HYS PGOOD Output Leakage IL PGOOD = 10V, V > V 1 A PGOOD OUT PG Current V to V Leakage Current IL ENABLE = 0, V = +65V 1 A IN OUT IN/OUT IN PGOOD/IFAULT Output Logic V Sink current = 3mA 0.4 V OL Low PGOOD Threshold V Percentage of V , V rising 71 78 85 % PG IN OUT PGOOD Hysteresis PG Percentage of V 10 % HYS IN MAX5910 2 12 25 Zero-Current Detection Decreasing output IF mA TH MAX5917A 2 6 10 Threshold current MAX5917B 2 12 25 2 MAX5910/MAX5917