DC1400A Linear Technology, DC1400A Datasheet - Page 3

• Manufacturer Part Number: DC1400A
• Description: BOARD EVAL LTM4608
• Manufacturer: Linear Technology
• Series: LTM®r

Specifications of DC1400A

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 1.2V, 1.5V, 1.8V, 2.5V, 3.3V
• Current - Output: 8A
• Voltage - Input: 2.5 ~ 5.5 V
• Regulator Topology: Buck
• Frequency - Switching: 1.5MHz
• Board Type: Fully Populated
• Utilized Ic / Part: LTM4608
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Power - Output: -

QUICK START PROCEDURE
Effi ciency vs Load Current with 3.3V
Effi ciency vs Load Current with 5V
85
80
75
70
65
60
55
50
45
40
35
30
25
90
85
80
75
70
65
60
55
50
45
40
35
30
0.1
0.1
LOAD CURRENT (A)
LOAD CURRENT (A)
1
1
Figure 4. Measured Load Transient Response (4A Step, 25% to 75%)
Figure 3. Measured Supply Effi ciency with Different V
50mV/DIV
BURST
PULSE SKIPPING
CONTINUOUS
BURST
PULSE SKIPPING
CONTINUOUS
V
OUT(AC)
2A/DIV
I
STEP
V
V
2A TO 6A LOAD STEP
C
C
IN
DC1400 F03a
DC1400 F03c
IN
OUT
OUT
FF
IN
, 1.2V
= 3.3V
= 47pF
, 1.2V
= 1.2V
= 1 22μF CERAMIC (1206, X5R, 6.3V),
10
10
2 100μF CERAMIC (1812, X5R, 6.3V)
OUT
OUT
50μs/DIV
DEMO MANUAL DC1400A
Effi ciency vs Load Current with 3.3V
Effi ciency vs Load Current with 5V
40
35
30
40
35
30
90
85
80
75
70
65
60
55
50
45
90
85
80
75
70
65
60
55
50
45
0.1
0.1
DC1400A F04
IN
and V
LOAD CURRENT (A)
LOAD CURRENT (A)
OUT
1
1
BURST
PULSE SKIPPING
CONTINUOUS
BURST
PULSE SKIPPING
CONTINUOUS
IN
DC1400 F03b
DC1400 F03b
IN
, 1.5V
, 1.5V
10
10
OUT
OUT
dc1400af
3