DC1245A Linear Technology, DC1245A Datasheet - Page 3

• Manufacturer Part Number: DC1245A
• Description: BOARD DEMO LTM4616
• Manufacturer: Linear Technology
• Series: µModuler

Specifications of DC1245A

• Design Resources: LTM4616 Spice Model LTM4616 Gerber Files DC1245 Design Files
• Main Purpose: DC/DC, Step Down
• Outputs And Type: 2, Non-Isolated
• Power - Output: -
• Voltage - Output: 1.2V, 1.8V
• Current - Output: 8A, 8A
• Voltage - Input: 2.7 ~ 5.5 V
• Regulator Topology: Buck
• Frequency - Switching: 1.5MHz
• Board Type: Fully Populated
• Utilized Ic / Part: LTM4616
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

electrical characteristics
SYMBOL
I
I
Output Specifications
I
ΔV
ΔV
ΔV
ΔV
V
f
f
ΔV
ΔV
t
ΔV
ΔV
t
I
Control Section
FB1, FB2
SS Delay
I
V
TRACK1, TRACK2
operating temperature range (Note 2). T
as each channel (Note 3).
Q(VIN1, VIN2)
S(VIN1, VIN2)
OUT1(DC),
S1,
SYNC1,
START1,
SETTLE1,
OUT1(PK),
FB
OUT1(AC)
RUN1,
OUT1(LINE)
OUT2(LINE)
OUT1(LOAD)
OUT2(LOAD)
OUT1(START),
OUT2(START)
OUT1(LS),
OUT2(LS)
f
S2
V
f
SYNC2
t
RUN2
START2
t
, V
SETTLE2
I
I
OUT2(PK)
OUT2(DC)
OUT2(AC)
/V
/V
/V
/V
OUT1
OUT2
OUT1
OUT2
PARAMETER
Input Supply Bias Current
Input Supply Current
Output Continuous Current Range
(Note 4)
Line Regulation Accuracy
Load Regulation Accuracy
Output Ripple Voltage
Switching Frequency
SYNC Capture Range
Turn-On Overshoot
Turn-On Time
Peak Deviation for Dynamic Load Load: 0% to 50% to 0% of Full Load,
Settling Time for Dynamic Load
Step
Output Current Limit
Voltage at FB Pin
Internal Soft-Start Delay
RUN Pin On/Off Threshold
Tracking Threshold (Rising)
Tracking Threshold (Falling)
Tracking Disable Threshold
A
= 25°C, V
CONDITIONS
V
V
V
V
V
V
Shutdown, RUN = 0, V
V
V
V
V
V
I
V
I
C
C
I
C
V
Load: 0% to 50% to 0% of Full Load, V
V
C
I
RUN Rising
RUN Falling
RUN = V
RUN = 0V
IN
OUT
OUT
OUT
OUT
IN
IN
IN
IN
IN
IN
IN
IN
OUT
OUT
OUT
OUT
OUT
OUT
OUT
IN
OUT
OUT
= 5V unless otherwise noted. Per the typical application in Figure 18. Specified
V
V
V
V
V
V
V
V
V
= 3.3V, V
= 3.3V, V
= 3.3V, V
= 5V, V
= 5V, V
= 5V, V
= 3.3V, V
= 5V, V
= 5V, V
= 0A, C
= 8A, V
= 1A Resistive Load, Track = V
= 0A, V
IN
IN
IN
IN
IN
IN
IN
IN
IN
= 1.5V
= 1.5V, V
= 1.5V (Note 4)
= 1.5V
= 100µF, V
= 100µF, V
= 100µF Ceramic x2, 470µF POSCAP ,
= 1.5V, C
= 100µF
= 3.3V, 5.5V
= 2.7V
= 3.3V, 5.5V, I
= 2.7V, I
= 3.3V
= 5V
= 2.7V, V
= 3.3V, V
= 5V, V
IN
The
OUT
OUT
OUT
OUT
OUT
OUT
IN
OUT
OUT
OUT
OUT
OUT
l
IN
= 5V, V
OUT
OUT
= 1.5V, No Switching, MODE = V
= 1.5V, No Switching, MODE = 0V
= 1.5V, Switching Continuous
= 1.5V, I
= 1.5V
LOAD
= 100µF X5R Ceramic, V
OUT
OUT
= 1.5V, V
OUT
OUT
denotes the specifications which apply over the full internal
= 1.5V, No Switching, MODE = V
= 1.5V, No Switching, MODE = 0V
= 1.5V, Switching Continuous
= 1.5V, I
from 2.7V to 5.5V, I
= 100µF
= 1.5V
= 1.5V, I
= 1.5V, V
= 1.5V
= 1.5V
= 0A to 5A
LOAD
OUT
IN
OUT
= 5V
OUT
IN
= 1.5V
= 0A to 8A
= 8A
= 2.7V to 5.5V
OUT
IN
= 8A
= 5V,
= 0A
IN
OUT
IN
= 0A
IN
= 5V,
= 5V,
IN
IN
l
l
l
l
0.590
0.587
1.25
0.75
MIN
1.4
1.3
0
0
V
IN
0.596
0.596
1.15
2.93
1.55
0.57
0.18
TYP
400
450
100
1.3
4.5
0.1
0.3
0.3
1.5
0.2
1.4
55
75
10
10
10
20
10
11
13
90
1
8
– 0.5
LTM4616
0.602
0.606
MAX
0.25
1.75
2.25
0.5
0.5
1.7
1.5
8
5
UNITS
mV
4616fc
3
MHz
MHz
%/V
mA
mA
mA
mA
mV
mV
mV
P-P
µA
µA
µA
µA
µs
µs
µs
%
%
A
A
A
A
A
A
A
V
V
V
V
V
V
V