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LTM4612

28

4612fc

For more information 

www.linear.com/LTM4612

RELATED PARTS

PACKAGE PHOTOGRAPH

4612 F24

15mm

15mm

2.8mm

PART NUMBER

DESCRIPTION

COMMENTS

LTM4606

EN55022B Compliant 6A, DC/DC µModule 

Regulator

EN55022B Compliant with PLL, Output Tracking and Margining,  

LTM4612 Pin Compatible

LTM4613

EN55022B Compliant 36V, 8A, Step-Down µModule 

Regulator with PLL, Output Tracking

5V ≤ V

IN

 ≤ 36V, 3.3V ≤ V

OUT

 ≤ 15V, 15mm × 15mm × 4.3mm LGA Package

LTM4601/LTM4601A

12A DC/DC µModule Regulator with PLL, Output 

Tracking/Margining and Remote Sensing

Synchronizable, PolyPhase Operation, LTM4601-1/LTM4601A-1 Version Has 

No Remote Sensing, LGA Package

LTM4604A

Low V

IN

 4A DC/DC µModule Regulator

2.375V ≤ V

IN

 ≤ 5.5V, 0.8V ≤ V

OUT

 ≤ 5V, 9mm 

×

 15mm 

×

 2.3mm LGA Package

LTM4608A

Low V

IN

 8A DC/DC µModule Regulator

2.7V ≤ V

IN

 ≤ 5.5V, 0.6V ≤ V

OUT

 ≤ 5V, 9mm 

×

 15mm 

×

 2.8mm LGA Package

LTM8022/LTM8023

36V

IN

, 1A and 2A DC/DC µModule Regulator

Pin Compatible, 4.5V ≤ V

IN

 ≤ 36V; 9mm 

×

 11.25mm 

×

 2.8mm LGA Package

LTM4627

20V

IN

, 15A DC/DC Step-Down µModule Regulator

4.5V ≤ V

IN

 ≤ 20V, 0.6V ≤ V

OUT

 ≤ 5V, 15mm × 15mm × 4.3mm LGA Package

LTM4618

26V

IN

, 6A DC/DC Step-Down µModule Regulator 

with PLL, Output Tracking

4.5V ≤ V

IN

 ≤ 26.5V, 0.8V ≤ V

OUT

 ≤ 5V, Synchronizable,  

9mm × 15mm × 4.3mm LGA Package

LTM8033

EN55022B Compliant 36V

IN

, 3A DC/DC Step-Down 

µModule Regulator

3.6V ≤ V

IN

 ≤ 36V, 0.8V ≤ V

OUT

 ≤ 24V, Synchronizable,  

11.25mm × 15mm × 4.3mm LGA Package

DESIGN RESOURCES

SUBJECT

DESCRIPTION

µModule Design and Manufacturing Resources

Design: 

  • Selector Guides 

  • Demo Boards and Gerber Files 

  • Free Simulation Tools

Manufacturing: 

  • Quick Start Guide 

  • PCB Design, Assembly and Manufacturing Guidelines 

  • Package and Board Level Reliability

µModule Regulator Products Search

1.   Sort table of products by parameters and download the result as a spread sheet.
2.  Search using the Quick Power Search parametric table.

 

TechClip Videos

Quick videos detailing how to bench test electrical and thermal performance of µModule products.

Digital Power System Management

Linear Technology’s family of digital power supply management ICs are highly integrated solutions that 

offer essential functions, including power supply monitoring, supervision, margining and sequencing, 

and feature EEPROM for storing user configurations and fault logging.

 

LINEAR TECHNOLOGY CORPORATION 2008

LT 0916 REV C • PRINTED IN USA

Linear Technology  Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 

 

FAX

: (408) 434-0507 

 

 

 

www.linear.com/LTM4612

Summary of Contents for EN55022B

Page 1: ...d regulation The LTM4612 is Pb free and RoHS compliant L LT LTC LTM Linear Technology the Linear logo PolyPhase and Module are registered trademarks and LTpowerCAD is a trademark of Linear Technology...

Page 2: ...15mm 15mm 2 8mm LGA 40 C to 125 C LTM4612MPV PBF LTM4612MPV PBF LTM4612MPV 133 Lead 15mm 15mm 2 8mm LGA 55 C to 125 C Consult LTC Marketing for parts specified with wider operating temperature ranges...

Page 3: ...X5R Ceramic and 1 100 F Electrolytic 1 10 F X5R Ceramic on VD Pins VIN 24V VOUT 5V VIN 24V VOUT 12V 7 2 3 4 mVP P mVP P VOUT AC Output Ripple Voltage IOUT 0A COUT 2 22 F 2 47 F X5R Ceramic VIN 24V VOU...

Page 4: ...rence Voltage 1 18 V VMARG0 VMARG1 MARG0 MARG1 Voltage Thresholds 1 4 V PGOOD DVFBH PGOOD Upper Threshold VFB Rising 7 10 13 DVFBL PGOOD Lower Threshold VFB Falling 7 10 13 DVFB HYS PGOOD Hysteresis V...

Page 5: ...5 50 80 75 4 5 4612 G02 12VIN 5VOUT 24VIN 5VOUT 36VIN 5VOUT LOAD CURRENT A 0 EFFICIENCY 70 95 100 1 2 3 60 85 65 90 55 50 80 75 4 5 4612 G03 20VIN 12VOUT 24VIN 12VOUT 28VIN 12VOUT 36VIN 12VOUT LOAD CU...

Page 6: ...SCON CAPACITOR 50 s DIV IIN 0 2A DIV VOUT 5V DIV 4612 G11 COUT 2 22 F CERAMIC CAPACITORS AND 2 47 F CERAMIC CAPACITORS 20 s DIV IIN 2A DIV VOUT 5V DIV 4612 G12 COUT 2 22 F CERAMIC CAPACITORS AND 2 47...

Page 7: ...enable discontinuous mode opera tion at low load or to a resistive divider from a secondary output when using a secondary winding TRACK SS PinA9 OutputVoltageTrackingandSoft Start Pin When the module...

Page 8: ...ied Thepinshaveaninternalpull downresistor of 50k See the Applications Information section SGND Pins D9 H12 Signal Ground Pins These pins connect to PGND at output capacitor point COMP Pins A11 D11 Cu...

Page 9: ...or Requirement VIN 20V to 36V VOUT 12V IOUT 4A 100 150 F Specifications are at TA 25 C Use Figure 1 configuration INTERNAL COMP SGND COMP PGOOD RUN 1 9V ON 1V OFF MAX 5V MARG1 MARG0 MPGM FCB PLLIN CSS...

Page 10: ...and ensure the electromagnetic interference EMI meets the limits of EN55022 Class B Pulling the RUN pin below 1V forces the controller into its shutdown state turning off both M1 and M2 At light load...

Page 11: ...7 5 2 10 F 50V 100 F 50V 4 47 F 16V None 12 86 178 14 8 3 13 7 5 2 10 F 50V 100 F 50V 2 22 F 16V 150 F 25V 24 83 166 27 3 13 7 5 2 10 F 50V 100 F 50V 4 47 F 16V None 24 86 169 14 8 3 13 7 5 2 10 F 50...

Page 12: ...equency vs Output Voltage Figure 3 Inductor Current Ripple vs Output Voltage VOUT V 2 600 800 1200 8 12 4612 F02 400 4 6 10 14 16 200 1000 FREQUENCY kHz 2 2 5 3 0 2 0 1 5 6 10 4 8 12 14 16 1 0 0 5 3 5...

Page 13: ...t advisable to properly derate the input capacitor or choose a capacitor rated at a higher temperature than required Always contact the capacitor manufacturer for derating requirements In a typical 5A...

Page 14: ...pple current versus the duty cycle Figure 5 provides a ratio of peak to peak output ripple current to the inductor ripple current as functions of duty cycle and the number of paralleled phases Pick th...

Page 15: ...ce continuous mode are disabled during the soft start process The soft start function can also be used to control the output ramp rising time so that another regulator can be easily tracked Output Vol...

Page 16: ...acks with margining COMP Pin The pin is the external compensation pin The module has alreadybeeninternallycompensatedformostoutputvolt ages LTpowerCAD from Linear Technology is available for more cont...

Page 17: ...al Considerations and Output Current Derating In different applications LTM4612 operates in a variety of thermal environments The maximum output current is limited by the environment thermal condition...

Page 18: ...3 5 4 5 105 4612 F11 0LFM 400LFM 200 LFM AMBIENT TEMPERATURE C 25 0 LOAD CURRENT A 1 0 2 0 3 0 35 45 55 65 85 75 95 4 0 5 0 0 5 1 5 2 5 3 5 4 5 105 4612 F12 0LFM 400LFM 200 LFM AMBIENT TEMPERATURE C...

Page 19: ...ure 9 0 BGA Heat Sink 12 2 Figures 12 14 16 24 36 Figure 9 200 BGA Heat Sink 8 6 Figures 12 14 16 24 36 Figure 9 400 BGA Heat Sink 7 7 Table 4 5V Output DERATING CURVE VIN V POWER LOSS CURVE AIR FLOW...

Page 20: ...Place high frequency ceramic input and output capaci tors next to the VD PGND and VOUT pins to minimize high frequency noise Place a dedicated power ground layer underneath the unit Useroundcornersfo...

Page 21: ...TO 36V CLOCK SYNC REFER TO TABLE 2 EXTERNAL 5V SUPPLY IMPROVES EFFICIENCY ESPECIALLY FOR HIGH INPUT VOLTAGES ON OFF LTM4612 SGND PGND MARGIN CONTROL R4 100k RfSET 191k 1 RFB 22 1k R1 392k 5 MARGIN 461...

Page 22: ...F20 VD VIN PLLIN C1 10 F 50V VOUT 15V 4A APPLICATIONS INFORMATION PGOOD RUN COMP INTVCC DRVCC fSET TRACK SS VOUT VFB FCB MARG0 MARG1 MPGM PULL UP SUPPLY 5V R2 100k C7 0 33 F C6 47pF C3 22 F 16V 4612 F...

Page 23: ...5 100 F 50V C2 10 F 50V C8 10 F 50V VIN 22V TO 36V LTC6908 1 2 PHASE OSCILLATOR CLOCK SYNC 0 PHASE CLOCK SYNC 180 PHASE LTM4612 SGND PGND PGOOD RUN COMP INTVCC DRVCC fSET TRACK SS LTM4612 SGND 12V TRA...

Page 24: ...CLOCK SYNC 0 PHASE CLOCK SYNC 180 PHASE SGND PGND PGOOD RUN COMP INTVCC DRVCC fSET TRACK SS VIN VD PLLIN SGND 5V TRACK PGND MARGIN CONTROL R4 100k RfSET1 150k RFB1 13 7k R1 392k R8 100k R9 22 1k RfSET...

Page 25: ...5 H6 H7 H8 H9 H10 H11 PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PIN NAME J1 J2 J3 J4 J5 J6 J7 J8 J9 J10 J11 VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT K1 K2 K3 K4 K5 K6 K7 K8...

Page 26: ...BSC 4 PAD 1 CORNER X Y aaa Z aaa Z DETAIL A 13 97 BSC 1 27 BSC 13 97 BSC 0 12 0 28 PACKAGE BOTTOM VIEW C 0 30 PAD 1 3 PADS SEE NOTES 1 2 3 4 5 6 7 8 10 9 11 12 DETAIL A 0 630 0 025 SQ 133x S Y X eee...

Page 27: ...ation sections Changes to The l denotes statement and Note 2 Changes to the Pin Functions Changes to the Block Diagram Text changes to the Operation section Text changes to the Applications Informatio...

Page 28: ...ator with PLL Output Tracking 4 5V VIN 26 5V 0 8V VOUT 5V Synchronizable 9mm 15mm 4 3mm LGA Package LTM8033 EN55022B Compliant 36VIN 3A DC DC Step Down Module Regulator 3 6V VIN 36V 0 8V VOUT 24V Sync...

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