Datasheet

LTM4611
23
4611fb
For more information www.linear.com/LTM4611
HEAT SINK MANUFACTURER PART NUMBER WEBSITE
Wakefield Engineering LTN20069 www.wakefield.com
AAVID Thermalloy 375424B00034G www.aavidthermalloy.com
*The quantity and quality of bulk input bypass capacitance
needed, particularly for low dropout scenarios (V
IN
– V
OUT
< 600mV) is mainly dependent on the output impedance
and dynamic response of the power source feeding the
LTM4611(s). Consider, in the extreme: for a heavy load
step, the full transient on LTM4611’s output is directly
referred to its input, and the LTM4611 can only deliver
to its output whatever the source supply and local input
caps can provide. Sluggish source supplies will call for
more bulk capacitance placed locally to the LTM4611’s
input, to assist the source supply in riding through severe
transient load steps.
V
OUT
(V)
V
IN
(V)
C
IN
*
(CERAMIC)
C
IN
*
(BULK)
C
OUT2
(CERAMIC)
C
OUT1
(BULK) C
FF
C
P
USING
DIFF
AMP FIGURE
TRANSIENT
DROOP,
0A TO 7.5A
LOAD STEP
(mV)
TRANSIENT
PEAK-TO-PEAK,
0A TO 7.5A TO 0A
(mV
P-P
)
RECOVERY
TIME (µs)
LOAD
STEP
SLEW
RATE
(A/µs)
R
SET
(kΩ)
1.2 5
2 × 47µF
150µF
6 × 22µF
330µF 10pF 10pF Y 21 64 123 25 7. 5 121
1.5 1.8
2 × 47µF
1000µF
6 × 100µF
None 220pF None Y 21 83 147 25 7.5 69
1.5 1.8
2 × 47µF
1000µF
2 × 22µF
470µF 47pF None Y 21 71 135 40 7.5 69
1.5 2.5
2 × 47µF
220µF
4 × 100µF
None 220pF None Y 21 64 122 40 7.5 69
1.5 2.5
2 × 47µF
220µF
5 × 22µF
330µF 22pF 10pF Y 21 68 133 30 7.5 69
1.5 3.3
2 × 47µF
150µF
4 × 100µF
None 33pF 10pF Y 21 66 123 30 7.5 69
1.5 3.3
2 × 47µF
150µF
4 × 22µF
330µF 22pF None Y 21 67 124 30 7.5 69
1.5 5
2 × 47µF
150µF
4 × 100µF
None 33pF 10pF Y 21 59 122 30 7. 5 69
1.5 5
2 × 47µF
150µF
6 × 22µF
330µF None 10pF Y 21 67 131 30 7.5 69
1.8 2.5
2 × 47µF
330µF
4 × 100µF
None 220pF None Y 21 73 137 45 7.5 48.1
1.8 2.5
2 × 47µF
330µF
5 × 22µF
330µF 22pF None Y 21 76 145 35 7.5 48.1
1.8 3.3
2 × 47µF
150µF
4 × 100µF
None 47pF 10pF Y 21 57 118 40 7.5 48.1
1.8 3.3
2 × 47µF
150µF
4 × 22µF
330µF 22pF None Y 21 69 137 30 7.5 48.1
1.8 5
2 × 47µF
150µF
4 × 100µF
None 33pF 10pF Y 21 64 127 40 7.5 48.1
1.8 5
2 × 47µF
150µF
6 × 22µF
330µF None 10pF Y 21 69 133 30 7.5 48.1
2.5 3.3
2 × 47µF
330µF
3 × 100µF
None 100pF None Y 21 71 143 45 7.5 28.4
2.5 3.3
2 × 47µF
330µF
4 × 100µF
None 100pF None Y 21 66 123 40 7. 5 28.4
2.5 3.3
2 × 47µF
330µF
3 × 22µF
330µF 47pF None Y 21 67 128 50 7.5 28.4
2.5 5
2 ×
47µF
150µ
F
3 × 100µF
None 100pF None Y 21 60 134 45 7.5 28.4
2.5 5
2 × 47µF
150µF
4 × 100µF
None 100pF None Y 21 54 115 50 7.5 28.4
2.5 5
2 × 47µF
150µF
5 × 22µF
330µF 22pF None Y 21 81 160 40 7.5 28.4
3.3 5
2 × 47µF
150µF
2 × 100µF
None 22pF None Y 21 137 274 40 7.5 19.3
3.3 5
2 × 47µF
150µF
3 × 100µF
None 47pF None Y 21 67 143 50 7.5 19.3
3.3 5
2 × 47µF
150µF
4 × 100µF
None 100pF None Y 21 56 119 60 7.5 19.3
3.3 5
2 × 47µF
150µF
5 × 22µF
330µF 22pF None Y 21 95 193 45 7.5 19.3
5 5.5
2 × 47µF
680µF
1 × 100µF
None 10pF None N 20 264 511 30 7.5 11.5
5 5.5
2 × 47µF
680µF
7 × 22µF
None None None N 20 218 431 40 7.5 11.5
applicaTions inForMaTion
THERMALLY CONDUCTIVE ADHESIVE
TAPE MANUFACTURER PART NUMBER WEBSITE
Chromerics T411 www.chromerics.com