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MAX5936 Dataheets PDF



Part Number MAX5936
Manufacturers Maxim Integrated Products
Logo Maxim Integrated Products
Description -48V Hot-Swap Controllers
Datasheet MAX5936 DatasheetMAX5936 Datasheet (PDF)

19-3281; Rev 1; 1/05 www.DataSheet4U.com -48V Hot-Swap Controllers with VIN Step Immunity and No RSENSE General Description The MAX5936/MAX5937 are hot-swap controllers for -10V to -80V rails. The MAX5936/MAX5937 allow circuit line cards to be safely hot-plugged into a live backplane without causing a glitch on the power supply. These devices integrate a circuit-breaker function requiring no RSENSE. The MAX5936/MAX5937 provide a controlled turn-on for circuit cards, limiting inrush, preventing.

  MAX5936   MAX5936


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19-3281; Rev 1; 1/05 www.DataSheet4U.com -48V Hot-Swap Controllers with VIN Step Immunity and No RSENSE General Description The MAX5936/MAX5937 are hot-swap controllers for -10V to -80V rails. The MAX5936/MAX5937 allow circuit line cards to be safely hot-plugged into a live backplane without causing a glitch on the power supply. These devices integrate a circuit-breaker function requiring no RSENSE. The MAX5936/MAX5937 provide a controlled turn-on for circuit cards, limiting inrush, preventing glitches on the power-supply rail, and preventing damage to board connectors and components. Before startup, the devices perform a Load Probe™ test to detect the presence of a short-circuit condition. If a short-circuit condition does not exist, the device limits the inrush current drawn by the load by gradually turning on the external MOSFET. Once the external MOSFET is fully enhanced, the MAX5936/MAX5937 provides overcurrent and short-circuit protection by monitoring the voltage drop across the RDS(ON) of the external power MOSFET. The MAX5936/MAX5937 integrate a 400mA fast GATE pulldown to guarantee that the power MOSFET is rapidly turned off in the event of an overcurrent or short-circuit condition. The MAX5936/MAX5937 protect the system against input voltage (VIN) steps by providing VIN step immunity. The MAX5936/MAX5937 provide an accurate UVLO voltage. The MAX5936 has an open-drain, active-low PGOOD output and the MAX5937 has an open-drain, active-high PGOOD output. The MAX5936/MAX5937 are offered with 100mV, 200mV, and 400mV circuit-breaker thresholds, in addition to a non-circuit-breaker option. These devices are offered in latched and autoretry fault management, are available in 8-pin SO packages, and specified for the extended (-40°C to +85°C) temperature range (see the Selector Guide). o -10V to -80V Operation o No RSENSE Required o Drives Large Power MOSFETS o Programmable Inrush Current Limit During Hot Plug o 100mV, 200mV, 400mV, and No-Circuit-Breaker Threshold Options o Circuit-Breaker Fault with Transient Rejection o Shorted Load Detection (Load Probe) Before Power MOSFET Turn-On o ±2.4% Accurate Undervoltage Lockout (UVLO) o Autoretry and Latched Fault Management Available o Low Quiescent Current Features MAX5936/MAX5937 Ordering Information PART MAX5936_ _ESA MAX5937_ _ESA TEMP RANGE -40°C to +85°C -40°C to +85°C PIN-PACKAGE 8 SO 8 SO Note: The first “_” represents A for the autoretry and L for the latched fault management option. The second “_” represents the circuit-breaker threshold. See the Selector Guide for additional information. Selector Guide and Typical Operating Circuit appear at end of data sheet. Applications Servers Telecom Line Cards Network Switches Solid-State Circuit Breaker Network Routers UVLO 2 STEP_MON 3 GND 1 Pin Configuration TOP VIEW 8 7 PGOOD (PGOOD) VOUT GATE LP MAX5936 MAX5937 6 5 VEE 4 SO Load Probe is a trademark of Maxim Integrated Products, Inc. ( ) FOR THE MAX5937. ________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. www.DataSheet4U.com -48V Hot-Swap Controllers with VIN Step Immunity and No RSENSE MAX5936/MAX5937 ABSOLUTE MAXIMUM RATINGS VEE, VOUT, PGOOD (PGOOD), LP, STEP_MON to GND............................................+0.3V to -85V PGOOD (PGOOD) to VOUT ....................................-0.3V to +85V PGOOD (PGOOD), LP, STEP_MON to VEE ............-0.3V to +85V GATE to VEE ...........................................................-0.3V to +20V UVLO to VEE .............................................................-0.3V to +6V Input Current LP (internally, duty-cycle limited).........................................1A PGOOD (PGOOD) (continuous) .....................................80mA GATE (during 15V clamp, continuous) ...........................30mA GATE (during 2V clamp, continuous) .............................50mA GATE (during gate pulldown, continuous)......................50mA Continuous Power Dissipation (TA = +70°C) 8-Pin SO (derate 5.9mW/°C above +70°C)..................471mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature .....................................................+150°C Storage Temperature Range ............................-65°C to +150°C Lead Temperature (soldering, 10s) ................................+300°C 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 (VEE = -10V to -80V, VIN = GND - VEE, VSTEP_MON = VEE, RLP.


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