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LTM4648 Datasheet(PDF) 22 Page - Linear Technology

Part # LTM4648
Description  Low VIN, 10A Step-Down 關Module Regulator
PDF  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTM4648 Datasheet(HTML) 22 Page - Linear Technology

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LTM4648
22
4648f
For more information www.linear.com/LTM4648
applicaTions inForMaTion
Table 4. 1.5V Output
DERATING CURVE
VIN (V)
POWER LOSS CURVE
AIR FLOW (LFM)
HEAT SINK
θJA (°C/W)
Figures 11, 12
3.3, 5
Figures 9, 10
0
None
14
Figures 11, 12
3.3, 5
Figures 9, 10
200
None
12
Figures 11, 12
3.3, 5
Figures 9, 10
400
None
10
Table 3. Output Voltage Response vs Component Matrix (Refer to Figure 18) 0A to 5A Load Step Typical Measured Values
CIN
(BULK)*
VENDORS
PART NUMBER
CIN
(CERAMIC) VENDORS
PART NUMBER
COUT
(CERAMIC) VENDORS
PART NUMBER
150µF, 16V SANYO OSCON 25HVH150MT
22µF, 16V
MURATA GRM32ER71C226KE18L 100µF, 6.3V MURATA
GRM32ER60J107ME20L
AVX
12106D107MAT
VOUT
VIN
CIN
(BULK)*
CIN
(CERAMIC)
COUT
(CERAMIC) CFF (pF)
VDROOP
VP-P
RECOVERY
TIME
LOAD STEP
SPEED
RFB
FREQ
1V
2.375V, 3.3, 5V
120µF*
22µF × 3 100µF × 3
None
65mV
130mV
25µs
5A/µs
15kΩ
450kHz
1.2V
2.375V, 3.3V,
5V
120µF*
22µF × 3 100µF × 3
None
70mV
140mv
25µs
5A/µs
10kΩ
450kHz
1.5V
3.3V, 5V
120µF*
22µF × 3 100µF × 3
None
80mV
160mV
30µs
5A/µs
6.65kΩ
450kHz
2.5V
3.3V, 5V
120µF*
22µF × 3 100µF × 3
None
110mV
230mV
40µs
5A/µs
3.09kΩ
450kHz
3.3V
5V
120µF*
22µF × 3 100µF × 3
None
140mV
290mV
40µs
5A/µs
2.21kΩ
450kHz
*Bulk capacitor is optional if VIN has very low input impedance.
Table 5. 2.5V Output
DERATING CURVE
VIN (V)
POWER LOSS CURVE
AIR FLOW (LFM)
HEAT SINK
θJA (°C/W)
Figure 13, 14
3.3, 5
Figures 9, 10
0
None
14
Figure 13, 14
3.3, 5
Figures 9, 10
200
None
12
Figure 13, 14
3.3, 5
Figures 9, 10
400
None
10
Table 6. 3.3V Output
DERATING CURVE
VIN (V)
POWER LOSS CURVE
AIR FLOW (LFM)
HEAT SINK
θJA (°C/W)
Figure 15
5
Figure 10
0
None
14
Figure 15
5
Figure 10
200
None
12
Figure 15
5
Figure 10
400
None
10



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