Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
This product is only offered in trays. For more information go to:
http://www.linear.com/packaging/
4611fb
2
For more information
www.linear.com/LTM4611
LTM4611
elecTrical characTerisTics
SYMBOL
V
IN
V
RUN
V
RUNHYS
V
RUN(FLOAT)
I
RUN(UP,1V)
I
RUN(UP,1.5V)
I
RUN(DOWN,5V)
I
Q
PARAMETER
Input DC Voltage
RUN Pin On Threshold
RUN Pin On Hysteresis
RUN Pin Voltage when Floating
RUN Pin Pull-Up Current
(RUN = 1V)
RUN Pin Pull-Up Current
(RUN = 1.5V)
RUN Pin Pull-Down Current
(RUN = 5V)
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
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
Utilizing DIFF_AMP, R
FB
= Not Used, V
IN
= 1.5V to
l
5.5V, I
OUT
= 0A to 15A (Note 4), R
FB
Electrically
Floating, MODE_PLLIN = GND
(Example See Figure 21)
(Example See Figure 20)
V
OUT
= V
FB
(Note 4)
V
OUT
= V
FB
, V
IN
from 1.5V to 5.5V, I
OUT
= 0A
V
OUT
= 1.5V, I
OUT
= 0A to 15A, V
IN
= 3.3V
(Note 4)
I
OUT
= 0A, C
OUT
= 100µF
×4
X5R Ceramic,
V
IN
= 3.3V, V
OUT
= 1.5V
C
OUT
= 100µF
×4
X5R Ceramic, V
OUT
= 1.5V,
I
OUT
= 0A, V
IN
= 3.3V, C
SS
= 1nF
C
OUT
= 100µF
×4
X5R Ceramic, No Load,
C
SS
= 1nF, V
IN
= 3.3V, V
OUT
= 1.5V
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
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
V
IN
= 5V, V
OUT
= 1.5V
V
IN
= 3.3V, V
OUT
= 1.5V
l
l
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.
CONDITIONS
l
MIN
1.5
1.1
3.4
TYP
MAX
5.5
UNITS
V
V
mV
V
µA
µA
nA
mA
mA
mA
mA
A
A
A
A
Input Specifications
V
RUN
Rising
l
1.22
80
3.65
1.1
10
1
70
140
145
1.1
10.4
7.9
5.3
10.2
1.35
4
I
S(VIN)
Input Supply Current
Output Specifications
V
OUT(DC)
V
OUT(RANGE)
I
OUT(DC)
∆V
OUT
(Line)
V
OUT
∆V
OUT
(Load)
V
OUT
V
OUT(AC)
∆V
OUT(START)
t
START
∆V
OUTLS
t
SETTLE
I
OUT(PK)
Output Voltage, Total Variation
with Line and Load
Utilizing DIFF_AMP
Not Utilizing DIFF_AMP
Output Continuous Current Range
Line Regulation Accuracy
Load Regulation Accuracy
Output Ripple Voltage
Turn-On Overshoot
Turn-On Time
Peak Deviation for Dynamic Load
0.785
0.781
0.797
0.797
0.809
0.813
3.7
5.4
0
15
0.3
0.2
8
5
500
60
0.5
V
V
V
V
A
%
%
mV
P-P
mV
µs
mV
Settling Time for Dynamic Load
Step
Output Current Limit
40
µs
30
30
A
A
4611fb
For more information
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3
LTM4611
elecTrical characTerisTics
SYMBOL
Control Section
V
FB
I
FB
V
OVL
I
TRACK/SS
t
ON(MIN)
R
FBHI
V
OSNS+
,
V
OSNS – CM RANGE
DIFFV
OUT
Range
V
OS
A
V
V
PGOOD
Feedback Overvoltage Lockout
Track Pin Soft-Start Pull-Up
Current
Minimum On-Time
Resistor Between V
OUT_LCL
and V
FB
Pins
Common Mode Input Range
DIFF_AMP Output Voltage Range
DIFF_AMP Input Offset Voltage
Magnitude
DIFF_AMP Differential Gain
PGOOD Trip Level
V
FB
with Respect to Set Output
V
FB
Ramping Positive, PGOOD Transitioning
V
FB
Ramping Positive, PGOOD Transitioning
V
FB
Ramping Negative, PGOOD Transitioning
V
FB
Ramping Negative, PGOOD Transitioning
–10
5
5
–10
V
IN
= 3.3V, Run > 1.5V
V
IN
= 3.3V, DIFFV
OUT
Load = 100k
l
l
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.
PARAMETER
Voltage at V
FB
Pin
CONDITIONS
I
OUT
= 0A, V
OUT
= V
FB
l
MIN
0.783
0.84
0.9
TYP
0.797
–10
0.87
1.4
90
MAX
0.811
0.89
1.9
UNITS
V
nA
V
µA
ns
TRACK/SS = 0V
(Note 5)
60.05
0
0
60.40
60.75
INTV
CC
– 1
INTV
CC
1.25
2
kΩ
V
V
mV
mV
V/V
1
–7.5
7.5
7.5
–7.5
2
3
100
V
OSNS
+ to GND
1.5V < V
IN
< 5.5V
I
CC
= 0 to 50mA
V
IN
= 3.3V, V
OUT
= 1.5V,
0.85V ≤ PLLFLTR/f
SET
≤ 2.0V
PLLFLTR/f
SET
Pin Voltage When Floating
PLLFLTR/f
SET
Floating
PLLFLTR/f
SET
= 0.85V
PLLFLTR/f
SET
= 2.0V
Mode_PLLIN Frequency > f
OSC
Mode_PLLIN Frequency < f
OSC
2.0
0.6
40
50
60
280
360
1.23
500
330
780
–13
13
250
19.9
4.8
20.0
5
0.5
835
710
20.1
5.2
–5
10
10
–5
%
%
%
%
V/µs
MHz
dB
kΩ
V
%
kHz
kHz
V
kHz
kHz
kHz
µA
µA
kΩ
V
V
%
4611fb
SR
GBP
CMRR
R
IN
V
INTVCC
V
INTVCC
Load Reg
f
S
f
SYNC
DIFF_AMP Slew Rate
DIFF_AMP Gain-Bandwidth
Product
DIFF_AMP Common Mode
Rejection
DIFF_AMP Input Resistance
Internal V
CC
Voltage
INTV
CC
Load Regulation
Output Ripple Voltage Frequency
SYNC Capture Range
INTV
CC
Linear Regulator
Oscillator and Phase-Locked Loop
PLLFLTR/f
SET(FLOAT)
PLLFLTR/f
SET
Open-Circuit
Voltage
Frequency Nominal Nominal Frequency
Frequency Low
Frequency High
I
PLLFLTR
R
MODE(PLLIN)
V
IH
V
IL
Mode_PLLIN
Clock
Lowest Frequency
Highest Frequency
PLLFLTR
Sourcing Capability
Sinking Capability
Mode_PLLIN Input Resistance
Clock Input Level High
Clock Input Level Low
Clock Input Duty Cycle Range
4
For more information
www.linear.com/LTM4611
LTM4611
elecTrical characTerisTics
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
The LTM4611 is tested under pulsed load conditions such that
T
J
≈ T
A
. The LTM4611E is guaranteed to meet performance specifications
over the 0°C to 125°C operating junction temperature (T
J
) range.
Specifications over the full –40°C to 125°C operating junction temperature
range are assured by design, characterization and correlation with
statistical process controls. The LTM4611I is guaranteed to meet
specifications over the full –40°C to 125°C operating junction temperature
range. Note that the maximum ambient temperature consistent with
these specifications is determined by specific operating conditions in
conjunction with board layout, the rated package thermal resistance and
other environmental factors.
Note 3:
Consistent with Pb-free 260°C peak IR reflow soldering profiles.
See Application Note 100.
Note 4:
See output current derating curves for different V
IN
, V
OUT
and T
A
.
Note 5:
The minimum on-time condition is specified for a peak-to-peak
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