DC1400A Linear Technology, DC1400A Datasheet - Page 21

• 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: -

TYPICAL APPLICATIONS
3V TO 5.5V
3V TO 5.5V
V
IN
V
IN
PHMODE
C
10µF
Figure 19. Two LTM4608As in Parallel, 1.5V at 16A Design.
See Also Dual 8A per Channel LTM4616
IN
MODE
TRACK
C2
10µF
RUN
Figure 18. Typical 3V to 5.5V
10µF
V
SV
SW
RUN
PLLLPF
TRACK
MODE
PHMODE
CLKOUT GND
IN
IN
LTM4608A
CLKIN
CLKIN
V
SV
SW
RUN
PLLLPF
TRACK
MODE
PHMODE
V
SV
SW
RUN
PLLLPF
TRACK
MODE
PHMODE
CLKOUT GND
CLKOUT GND
IN
IN
SGND
IN
IN
PGOOD
BSEL
V
MGN
I
THM
OUT
LTM4608A
LTM4608A
I
OE
FB
TH
H
H
L
CLKIN
CLKIN
A
H
L
X
IN
BSEL
SGND
SGND
PGOOD
PGOOD
50k
Y
OUT
IN
BSEL
BSEL
H
V
V
L
Z
MGN
MGN
I
I
R
3.09k
THM
THM
OUT
OUT
I
I
, 2.5V at 8A Design
FB
FB
TH
FB
TH
C1
220pF
U1: PERICOM PI74ST1G126CEX
OR TOSHIBA TC7SZ126AFE
MGN
V
(HIGH = 10%)
(FLOAT = 15%)
(LOW = 5%)
4608A F19
IN
H
L
/2
+ OF BSEL SELECTION
– OF BSEL SELECTION
C3
47pF
MARGIN VALUE
NO MARGIN
C
100µF
OUT
V
50k
100pF
IN
100k
V
C4
IN
V
IN
Y
PGOOD
V
2.5V
8A
8A AT 5V INPUT
6A AT 3.3V INPUT
OUT
50k
50k
OUT
3.32k
4
5
3
1
U1
100µF
6.3V
X5R
C3
100µF
6.3V
X5R
4608A F18
C1
100µF
6.3V
X5R
2
OE
A
IN
LTM4608A
V
1.5V
16A
OUT
21
4608afc