Datasheet

LTM4611
3
4611fb
For more information www.linear.com/LTM4611
elecTrical characTerisTics
The l denotes the specifications which apply over the full internal operating
junction temperature range, otherwise specifications are at T
A
= 25°C, V
IN
= 3.3V, per the typical application in Figure 21.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Specifications
V
IN
Input DC Voltage
l
1.5 5.5 V
V
RUN
RUN Pin On Threshold V
RUN
Rising
l
1.1 1.22 1.35 V
V
RUNHYS
RUN Pin On Hysteresis 80 mV
V
RUN(FLOAT)
RUN Pin Voltage when Floating 3.4 3.65 4 V
I
RUN (UP,1V )
RUN Pin Pull-Up Current
(RUN = 1V)
1.1 µA
I
RUN (UP,1.5V )
RUN Pin Pull-Up Current
(RUN = 1.5V)
10 µA
I
RUN(DOWN,5V)
RUN Pin Pull-Down Current
(RUN = 5V)
1 nA
I
Q
Input Supply Bias Current V
OUT
= 1.5V, Burst Mode Operation, I
OUT
= 0.1A
V
OUT
= 1.5V, Pulse-Skipping Mode, I
OUT
= 0.1A
V
OUT
= 1.5V, Switching Continuous, I
OUT
= 0.1A
Shutdown, RUN = 0V
70
140
145
1.1
mA
mA
mA
mA
I
S(VIN)
Input Supply Current V
IN
= 2.5V, V
OUT
= 1.5V, I
OUT
= 15A
V
IN
= 3.3V, V
OUT
= 1.5V, I
OUT
= 15A
V
IN
= 5V, V
OUT
= 1.5V, I
OUT
= 15A
V
IN
= 1.5V, V
OUT
= 0.8V, I
OUT
= 15A
10.4
7.9
5.3
10.2
A
A
A
A
Output Specifications
V
OUT(DC)
Output Voltage, Total Variation
with Line and Load
Utilizing DIFF_AMP, R
FB
= Not Used, V
IN
= 1.5V to
5.5V, I
OUT
= 0A to 15A (Note 4), R
FB
Electrically
Floating, MODE_PLLIN = GND
l
0.785
0.781
0.797
0.797
0.809
0.813
V
V
V
OUT(RANGE)
Utilizing DIFF_AMP (Example See Figure 21) 3.7 V
Not Utilizing DIFF_AMP (Example See Figure 20) 5.4 V
I
OUT(DC)
Output Continuous Current Range V
OUT
= V
FB
(Note 4) 0 15 A
∆V
OUT
(Line)
V
OUT
Line Regulation Accuracy V
OUT
= V
FB
, V
IN
from 1.5V to 5.5V, I
OUT
= 0A
l
0.3 %
∆V
OUT
(Load)
V
OUT
Load Regulation Accuracy V
OUT
= 1.5V, I
OUT
= 0A to 15A, V
IN
= 3.3V
(Note 4)
l
0.2 0.5 %
V
OUT(AC)
Output Ripple Voltage
I
OUT
= 0A, C
OUT
= 100µF ×4 X5R Ceramic,
V
IN
= 3.3V, V
OUT
= 1.5V
8 mV
P-P
∆V
OUT(START)
Turn-On Overshoot
C
OUT
= 100µF ×4 X5R Ceramic, V
OUT
= 1.5V,
I
OUT
= 0A, V
IN
= 3.3V, C
SS
= 1nF
5 mV
t
START
Turn-On Time
C
OUT
= 100µF ×4 X5R Ceramic, No Load,
C
SS
= 1nF, V
IN
= 3.3V, V
OUT
= 1.5V
500 µs
∆V
OUTLS
Peak Deviation for Dynamic Load Load: 0% to 50% to 0% of Full Load
V
IN
= 3.3V, V
OUT
= 1.5V, C
OUT
= 100µF ×4
X5R Ceramic, C
FF
= 100pF
60 mV
t
SETTLE
Settling Time for Dynamic Load
Step
Load: 0% to 50% to 0% of Full Load
V
IN
= 3.3V, V
OUT
= 1.5V, C
OUT
= 100µF ×4
X5R Ceramic, C
FF
= 100pF
40 µs
I
OUT(PK)
Output Current Limit V
IN
= 5V, V
OUT
= 1.5V
V
IN
= 3.3V, V
OUT
= 1.5V
30
30
A
A