Datasheet LTM4636 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | 40A DC/DC μModule Regulator |
| Pages / Page | 36 / 1 — FeaTures. DescripTion. Stacked Inductor Acts as Heat Sink. Wide Input … |
| File Format / Size | PDF / 1.2 Mb |
| Document Language | English |
FeaTures. DescripTion. Stacked Inductor Acts as Heat Sink. Wide Input Voltage Range: 4.7V to 15V
Model Line for this Datasheet
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LTM4636 40A DC/DC µModule Regulator
FeaTures DescripTion
n
Stacked Inductor Acts as Heat Sink
The LTM®4636 is a 40A step-down µModule (power n
Wide Input Voltage Range: 4.7V to 15V
module) switching regulator with a stacked inductor as a n
0.6V to 3.3V Output Voltage Range
heat sink for quicker heat dissipation and cooler operation n
±1.3% Total DC Output Voltage Error Over Line,
in a small package. The exposed inductor permits direct
Load and Temperature (–40°C to 125°C)
contact with airflow from any direction. The LTM4636 n
Differential Remote Sense Amplifier for Precision
can deliver 40W (12VIN, 1VOUT, 40A, 200LFM) with only
Regulation
40°C rise over the ambient temperature. Full-power 40W n
Current Mode Control/Fast Transient Response
is delivered, up to 83°C ambient and half-power 20W is n
Frequency Synchronization
supported at 110°C ambient. n
Parallel Current Sharing (Up to 240A)
The LTM4636 operates at 92%, 90% and 88% efficiency, n
Internal or External Compensation
delivering 15A, 30A and 40A, respectively, to a 1V load n 88% Efficiency (12VIN, 1VOUT) at 40A (12VIN). The µModule regulator is scalable such that four n Overcurrent Foldback Protection µModules in current sharing mode deliver 160W with only n 16mm × 16mm × 7.07mm BGA Package 40°C rise and 88% efficiency (12VIN, 1VOUT, 400LFM). The LTM4636 is offered in a 16mm × 16mm × 7.07mm
applicaTions
BGA package. L n , LT, LTC, LTM, PolyPhase, Burst Mode, µModule, Linear Technology, LTpowerCAD and the Telecom Servers and Networking Equipment Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks n are the property of their respective owners. Protected by U.S. Patents, including 5481178, Industrial Equipment and Medical Systems 5847554, 6580258, 6304066, 6476589, 6774611, 6677210, 8163643.
Typical applicaTion 1V, 40A DC/DC µModule Regulator 12VIN , 1VOUT Efficiency vs Output Current
VIN ≤ 5.5V, TIE VIN, INTVCC AND PVCC 100 TOGETHER, TIE RUNP TO GND. VIN > 5.5V, THEN OPERATE AS SHOWN 4.70V TO PVCC 95 15V PVCC INTVCC + 22µF 22µF 100µF 90 16V 15k V 25V IN INTV PV ×5 CC CC RUNC 85 0.1µF LTM4636 1V EFFICIENCY (%) 80 RUNP V V OUT OUT INTV 1V, 40A CC HIZREG V + 75 FREQ OUTS1 + 470µF 100µF 34.8k TRACK/SS 6.3V 6.3V MODE/PLLIN ×3 ×4 70 0 5 10 15 20 25 30 35 40 V – OUTS1 OUTPUT CURRENT (A) 4636 TA01b SNSP1 SNSP2 PINS NOT USED IN THIS CIRCUIT: COMPA CLKOUT, GMON, PGOOD, PHMODE, PWM, COMPB VFB SW, TEST1, TEST2, TEST3, TEST4, TMON TEMP+ TEMP– SGND PGND 7.5k 4636 TA01a OPTIONAL TEMP MONITOR 4636f For more information www.linear.com/LTM4636 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Package Photo Typical Application Design Resources Related Parts
FeaTures DescripTion
n
Stacked Inductor Acts as Heat Sink
The LTM®4636 is a 40A step-down µModule (power n
Wide Input Voltage Range: 4.7V to 15V
module) switching regulator with a stacked inductor as a n
0.6V to 3.3V Output Voltage Range
heat sink for quicker heat dissipation and cooler operation n
±1.3% Total DC Output Voltage Error Over Line,
in a small package. The exposed inductor permits direct
Load and Temperature (–40°C to 125°C)
contact with airflow from any direction. The LTM4636 n
Differential Remote Sense Amplifier for Precision
can deliver 40W (12VIN, 1VOUT, 40A, 200LFM) with only
Regulation
40°C rise over the ambient temperature. Full-power 40W n
Current Mode Control/Fast Transient Response
is delivered, up to 83°C ambient and half-power 20W is n
Frequency Synchronization
supported at 110°C ambient. n
Parallel Current Sharing (Up to 240A)
The LTM4636 operates at 92%, 90% and 88% efficiency, n
Internal or External Compensation
delivering 15A, 30A and 40A, respectively, to a 1V load n 88% Efficiency (12VIN, 1VOUT) at 40A (12VIN). The µModule regulator is scalable such that four n Overcurrent Foldback Protection µModules in current sharing mode deliver 160W with only n 16mm × 16mm × 7.07mm BGA Package 40°C rise and 88% efficiency (12VIN, 1VOUT, 400LFM). The LTM4636 is offered in a 16mm × 16mm × 7.07mm
applicaTions
BGA package. L n , LT, LTC, LTM, PolyPhase, Burst Mode, µModule, Linear Technology, LTpowerCAD and the Telecom Servers and Networking Equipment Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks n are the property of their respective owners. Protected by U.S. Patents, including 5481178, Industrial Equipment and Medical Systems 5847554, 6580258, 6304066, 6476589, 6774611, 6677210, 8163643.
Typical applicaTion 1V, 40A DC/DC µModule Regulator 12VIN , 1VOUT Efficiency vs Output Current
VIN ≤ 5.5V, TIE VIN, INTVCC AND PVCC 100 TOGETHER, TIE RUNP TO GND. VIN > 5.5V, THEN OPERATE AS SHOWN 4.70V TO PVCC 95 15V PVCC INTVCC + 22µF 22µF 100µF 90 16V 15k V 25V IN INTV PV ×5 CC CC RUNC 85 0.1µF LTM4636 1V EFFICIENCY (%) 80 RUNP V V OUT OUT INTV 1V, 40A CC HIZREG V + 75 FREQ OUTS1 + 470µF 100µF 34.8k TRACK/SS 6.3V 6.3V MODE/PLLIN ×3 ×4 70 0 5 10 15 20 25 30 35 40 V – OUTS1 OUTPUT CURRENT (A) 4636 TA01b SNSP1 SNSP2 PINS NOT USED IN THIS CIRCUIT: COMPA CLKOUT, GMON, PGOOD, PHMODE, PWM, COMPB VFB SW, TEST1, TEST2, TEST3, TEST4, TMON TEMP+ TEMP– SGND PGND 7.5k 4636 TA01a OPTIONAL TEMP MONITOR 4636f For more information www.linear.com/LTM4636 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Package Photo Typical Application Design Resources Related Parts
