LTM4680 datasheet(16/132 Pages) AD

16 / 132 page

LTM4681

Rev. 0

For more information www.analog.com

PIN FUNCTIONS

PACKAGE ROW AND COLUMN LABELING MAY VARY

AMONG µModule PRODUCTS. REVIEW EACH PACKAGE

LAYOUT CAREFULLY.

GND (A1-A4, A7, A12, B1-B4, B7, B12, C3-C4, C7,

C12, D3-D4, D7, D12, E3-E4, E7, E12, F1-F4, F7,

F12, G3-G4, G7, G12, H3-H4, H7, H12, J3-J4, J7,

J12, K1-K4, K7-K12, L1-L15, M1-M15, N1-N4, N7-N8,

N12, P3-P4, P7, P12, R3-R4, R7, R12, T3-T4, T7, T12,

U1-U4, U7, U12, V3-V4, V7, V12, W3-W4, W7, W12,

Y3-Y4, Y7, Y12, AA1-AA4, AA7, AA12, AB1-AB4, AB7,

AB12): Power Ground of the LTM4681. Power return for

VIN01 VIN23 VOUT0,1 and VOUT2,3. Return input and output

capacitors to this point.

VOUT0 (A13-A15, B13-B15, C13-C15, D13-D15, E13-

E15): Channel 0 Output Voltage. Place recommended

output capacitors from this shape to GND. See recom-

mended layout.

VOSNS0+ (J11): Channel 0 Positive Differential Voltage

Sense Input. Together, VOSNS0+ and VOSNS0– serve to

Kelvin-sense the VOUT0 output voltage at VOUT0’s point

of load (POL) and provide the differential feedback signal

directly to channel 0’s feedback loop. Command VOUT0’s

target regulation voltage by serial bus. Its initial command

value at SVIN_01 power-up is dictated by NVM (non-volatile

memory) contents (factory default: 1.000V)—or, option-

ally, may be set by configuration resistors; see VOUT0_

CFG, VTRIM0_CFG and the Applications Information

section.

VOSNS0– (H11): Channel 0 Negative Differential Voltage

Sense Input. See VOSNS0+.

VOUT1 (F13-F15, G13-G15, H13-H15, J13-J15, K13-

K15): Channel 1 Output Voltage. Place recommended

output capacitors from this shape to GND. See recom-

mended layout.

VOSNS1+ (G8): Channel 1 Positive Differential Voltage

Sense Input. Together, VOSNS1+ and VOSNS1– serve to

Kelvin-sense the VOUT1 output voltage at VOUT1’s point

of load (POL) and provide the differential feedback signal

directly to channel 1’s feedback loop. Command VOUT1’s

target regulation voltage by serial bus. Its initial command

value at SVIN_01 power-up is dictated by NVM (non-volatile

memory) contents (factory default: 1.000V)—or, option-

ally, may be set by configuration resistors; see VOUT1_

CFG, VTRIM1_CFG and the Applications Information

section.

VOSNS1– (F8): Channel 1 Negative Differential Voltage

Sense Input. See VOSNS1+.

VOUT2 (N13-N15, P13-P15, R13-R15, T13-T15, U13-

U15): Channel 2 Output Voltage. Place recommended

output capacitors from this shape to GND. See recom-

mended layout.

VOSNS2+ (P8): Channel 2 Positive Differential Voltage

Sense Input. Together, VOSNS2+ and VOSNS2– serve to

Kelvin-sense the VOUT2 output voltage at VOUT1’s point

of load (POL) and provide the differential feedback signal

directly to channel 2’s feedback loop. Command VOUT2’s

target regulation voltage by serial bus. Its initial command

value at SVIN_23 power-up is dictated by NVM (non-volatile

memory) contents (factory default: 1.000V)—or, option-

ally, may be set by configuration resistors; see VOUT2_

CFG, VTRIM2_CFG and the Applications Information

section.

VOSNS2– (R8): Channel 2 Negative Differential Voltage

Sense Input. See VOSNS2+.

VOUT3 (V13-V15, W13-W15, Y13-Y15, AA13-AA15,

AB13-AB15): Channel 3 Output Voltage. Place recom-

mended output capacitors from this shape to GND See

recommended layout.

VOSNS3+ (R11): Channel 3 Positive Differential Voltage

Sense Input. Together, VOSNS3+ and VOSNS3– serve to

Kelvin-sense the VOUT3 output voltage at VOUT3’s point

of load (POL) and provide the differential feedback signal

directly to channel 3’s feedback loop. Command VOUT3’s

target regulation voltage by serial bus. Its initial command

value at SVIN_23 power-up is dictated by NVM (non-volatile

memory) contents (factory default: 1.000V)—or, option-

ally, may be set by configuration resistors; see VOUT3_

CFG, VTRIM3_CFG and the Applications Information

section.

VOSNS3– (T11): Channel 3 Negative Differential Voltage

Sense Input. See VOSNS3+.

LTM4680 Datasheet(PDF) 16 Page - Analog Devices

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