ltm4608a Linear Technology Corporation, ltm4608a Datasheet - Page 3

• Manufacturer Part Number: ltm4608a
• Description: Low Vin, 8a Dc/dc ?module With Tracking, Margining, And Frequency Synchronization
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
SYMBOL
I
I
Output Specifi cations
I
ΔV
ΔV
V
f
f
ΔV
t
ΔV
t
I
Control Section
V
SS Delay
I
V
operating temperature range, otherwise specifi cations are at T
Q(VIN)
S(VIN)
OUT(DC)
OUT(PK)
FB
S
SYNC
START
SETTLE
OUT(AC)
FB
RUN
V
V
OUT(LINE)
OUT(LOAD)
OUT(START)
OUT(LS)
OUT
OUT
PARAMETER
Input Supply Bias Current
Input Supply Current
Output Continuous Current
Range (Note 3)
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
Settling Time for Dynamic Load
Step
Output Current Limit
Voltage at FB Pin
Internal Soft-Start Delay
RUN Pin On/Off Threshold
CONDITIONS
V
V
V
V
V
V
Shutdown, RUN = 0, V
V
V
V
V
V
V
V
I
C
C
Resistive Load, Track = V
Load: 0% to 50% to 0% of Full Load,
C
V
Load: 0% to 50% to 0% of Full Load, V
V
C
I
RUN Rising
RUN Falling
I
OUT
OUT
OUT
IN
IN
IN
IN
IN
IN
IN
IN
IN
OUT
OUT
OUT
OUT
OUT
OUT
OUT
IN
OUT
OUT
V
V
V
V
V
V
V
V
V
= 3.3V, No Switching, Mode = V
= 3.3V, No Switching, Mode = 0V
= 3.3V, V
= 5V, No Switching, Mode = V
= 5V, No Switching, Mode = 0V
= 5V, V
= 2.4V, V
= 3.3V, V
= 5V, V
= 5V, V
= 0A, C
= 8A, V
= 0A, V
IN
IN
IN
IN
IN
IN
IN
IN
IN
= 1.5V
= 1.5V, V
= 1.5V (Note 3)
= 1.5V
= 100μF, V
= 100μF, V
= 100μF Ceramic, 100μF POSCAP,
= 1.5V, C
= 100μF
= 3.3V, 5.5V
= 2.4V
= 3.3V, 5.5V, I
= 2.4V, I
= 3.3V
= 5V
= 2.4V, V
= 3.3V, V
= 5V, V
The
OUT
OUT
OUT
OUT
IN
OUT
OUT
OUT
OUT
IN
OUT
OUT
= 5V, V
= 1.5V, Switching Continuous
= 1.5V, I
= 1.5V
●
LOAD
OUT
OUT
A
= 100μF X5R Ceramic, V
OUT
OUT
= 1.5V, V
from 2.4V to 5.5V, I
= 1.5V, Switching Continuous
= 1.5V, I
= 1.5V, I
denotes the specifi cations which apply over the full internal
= 25°C. V
= 100μF
= 1.5V
= 1.5V, I
= 1.5V, I
= 1.5V
= 1.5V
= 0A to 5A
LOAD
OUT
IN
OUT
= 5V
OUT
OUT
IN
IN
= 1.5V
= 0A to 8A
, V
= 8A
= 2.4V to 5.5V
OUT
OUT
IN
= 5A
= 8A
IN
= 5V unless otherwise noted. See Figure 1.
= 5V
= 0A
= 1A,
IN
IN
OUT
IN
= 0A
IN
= 5V,
= 5V,
●
●
●
●
0.590
0.587
MIN
1.25
0.75
1.4
1.3
0
0
0.596
0.596
LTM4608A
2.93
TYP
1.15
3.75
1.55
400
450
100
1.3
4.5
0.1
0.3
0.3
1.5
0.2
1.4
55
75
10
10
10
15
10
11
13
90
1
8
0.602
0.606
MAX
0.25
0.75
0.75
1.75
2.25
1.7
1.5
8
5
UNITS
mV
4608af
3
%/V
MHz
MHz
mA
mA
mA
mA
mV
mV
mV
P-P
μA
μA
μA
μA
μs
μs
μs
%
%
A
A
A
A
A
A
A
A
V
V
V
V