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LTM4609 Datasheet(PDF) 1 Page - Linear Technology |
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LTM4609 Datasheet(HTML) 1 Page - Linear Technology |
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1 / 38 page  LTM4636-1 1 46361fa For more information www.linear.com/LTM4636-1 TYPICAL APPLICATION DESCRIPTION 40A µModule Regulator with Overvoltage/ Overtemperature Protection The LTM®4636-1 is a 40A step-down µModule® (power module) switching regulator with stacked inductor as a heat sink for heat dissipation and cooler operation in a small package. The LTM4636-1 detects overtemperature andinput/outputovervoltageconditionsandcantripanup- stream power supply or circuit breaker to protect itself and its load. The exposed inductor as a heat sink permits direct contact with airflow from any direction. The LTM4636-1 can deliver 40W (12VIN, 1VOUT, 40A, 200LFM) with only 40°C rise over the ambient temperature. Full-power 40W is delivered up to 83°C ambient and half-power 20W is supported at 110°C ambient. TheLTM4636-1operatesat92%,90%and88%efficiency delivering 15A, 30A and 40A, respectively, to a 1V load (12VIN). The µModule regulator is scalable where four in current sharing deliver 160W with only 40°C rise and 88% efficiency (12VIN, 1VOUT, 400LFM). The LTM4636-1 is offered in 16mm × 16mm × 7.07mm BGA package. All registered trademarks and trademarks are the property of their respective owners. Protected by U.S. Patents, including 5481178, 5847554, 6580258, 6304066, 6476589, 6774611, 6677210, 8163643. 1V, 40A DC/DC µModule Regulator FEATURES APPLICATIONS n Overtemperature, Input/Output Overvoltage Protection n Trips Upstream Power Source or Circuit Breaker n Stacked Inductor Acts as Heat Sink n Wide Input Voltage Range: 4.7V to 15V n 0.6V to 3.3V Output Voltage Range n ±1.3% Total DC Output Voltage Error (–40°C to 125°C) n Differential Remote Sense Amplifier for Precision Regulation n Current Mode Control/Fast Transient Response n Frequency Synchronization n Parallel Current Sharing (Up to 240A) n 88% Efficiency (12VIN, 1VOUT) at 40A n Overcurrent Foldback Protection n Overtemperature Shutdown n 16mm × 16mm × 7.07mm BGA Package n Telecom Servers and Networking Equipment n Industrial Equipment and Medical Systems 12VIN , 1VOUT Efficiency at 350kHz vs Output Current OUTPUT CURRENT (A) 0 90 95 100 15 25 46361 TA01b 85 80 5 10 20 30 40 35 75 70 See the LTM4636 for simpler circuit and fewer features. TEMP+ TEMP– SGND VIN 1V 34.8k 22µF 0.1µF 22µF 16V ×5 4.7V TO 15V VSYS 4.5V TO 5.5V RANGE 100µF 25V INTVCC PVCC VIN ≤ 5.5V, TIE VIN AND PVCC TOGETHER, TIE RUNP TO GND. VIN > 5.5V, THEN OPERATE AS SHOWN OPTIONAL TEMP MONITOR INTVCC INTVCC PVCC LTM4636-1 PVCC PGND VOUTS1+ VOUT OTP_SET OVP_SET CROWBAR OPTIONAL CROWBAR VOUTS1– VFB BIAS BIAS + 470µF 6.3V ×3 + 7.5k 100µF 6.3V ×4 VOUT 1V, 40A 46361 TA01a PINS NOT USED IN THIS CIRCUIT: CLKOUT, GMON, PGOOD, PHMODE, PWM, SW, TEST1, TEST2, TEST3, TMON COMPA COMPB SNSP1 SNSP2 MODE/PLLIN TRACK/SS 15k RUNC RUNP HIZREG OVP_TRIP OVER_TEMP FREQ HOT SWAP CIRCUIT BREAKER UPSTREAM BIAS REGULATOR OPTIONAL OVERTEMPERATURE AND OVERVOLTAGE FAULT SIGNAL 61.9k 86.6k 0.01µF 100k |
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Similar Description - LTM4609 |
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