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LTM4612

25

4612fc

For more information 

www.linear.com/LTM4612

PIN NAME

A1 

A2 

A3 

A4 

A5 

A6

V

IN 

V

IN 

V

IN 

V

IN 

V

IN 

V

IN

B1 

B2 

B3 

B4 

B5 

B6

V

IN 

V

IN 

V

IN 

V

IN 

V

IN 

V

IN

C1 

C2 

C3 

C4 

C5 

C6

V

IN 

V

IN 

V

IN 

V

IN 

V

IN 

V

IN

Pin Assignment Tables

(Arranged by Pin Function)

PIN NAME

D1 

D2 

D3 

D4 

D5 

D6

PGND 

PGND 

PGND 

PGND 

PGND 

PGND

E1 

E2 

E3 

E4 

E5 

E6 

E7 

E8

PGND 

PGND 

PGND 

PGND 

PGND 

PGND 

PGND 

PGND

F1 

F2 

F3 

F4 

F5 

F6 

F7 

F8 

F9

PGND 

PGND 

PGND 

PGND 

PGND 

PGND 

PGND 

PGND 

PGND

G1 

G2 

G3 

G4 

G5 

G6 

G7 

G8 

G9 

G10 

G11

PGND 

PGND 

PGND 

PGND 

PGND 

PGND 

PGND 

PGND 

PGND 

PGND 

PGND

H1 

H2 

H3 

H4 

H5 

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

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT

K1 

K2 

K3 

K4 

K5 

K6 

K7 

K8 

K9 

K10 

K11

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT

L1 

L2 

L3 

L4 

L5 

L6 

L7 

L8 

L9 

L10 

L11

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT

M1 

M2 

M3 

M4 

M5 

M6 

M7 

M8 

M9 

M10 

M11

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT 

V

OUT

PIN NAME

A7 

A8 

A9 

A10 

A11 

A12

INTV

CC

 

PLLIN 

TRACK/SS 

RUN 

COMP 

MPGM

B7 

B8 

B9 

B10 

B11 

B12

V

D

 

RUN 

MPGM 

f

SET

C7 

C8 

C9 

C10 

C11 

C12

V

D

 

DRV

CC

 

MARG1 

MARG0

D7 

D8 

D9 

D10 

D11 

D12

SGND 

COMP 

MARG1

E9 

E10 

E11 

E12

DRV

CC

 

DRV

CC

F10 

F11 

F12

V

FB

G12

PGOOD

H12

SGND

J12

NC

K12

NC

L12

NC

M12

FCB

PACKAGE DESCRIPTION

Содержание EN55022B

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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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