LTM4611IV#PBF Linear Technology, LTM4611IV#PBF Datasheet - Page 15

• Manufacturer Part Number: LTM4611IV#PBF
• Description: IC UMODULE DC/DC LV 15A 133-LGA
• Manufacturer: Linear Technology
• Series: µModuler
• Type: Point of Load (POL) Non-Isolatedr

Specifications of LTM4611IV#PBF

• Output: 0.8 ~ 5 V
• Number Of Outputs: 1
• Power (watts): 75W
• Mounting Type: Surface Mount
• Voltage - Input: 1.5 ~ 5.5 V
• Package / Case: 133-LGA
• 1st Output: 0.8 ~ 5 VDC @ 15A
• Size / Dimension: 0.59" L x 0.59" W x 0.17" H (15mm x 15mm x 4.32mm)
• Power (watts) - Rated: 75W
• Operating Temperature: -40°C ~ 125°C
• Efficiency: 94%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -

applicaTions inForMaTion
Even for applications that do not require tracking or
sequencing, a minimum recommended value for C
10nF (X7R MLCC, 10% tolerance, nominal; X5R material
may be substituted if the capacitor temperature will not
exceed 85°C), yielding extreme turn-on rise times of 3.8ms
1.8V TO 5.5V
V
IN
1.8V TO 5.5V
Figure 5. Output Voltage Coincident Tracking
VOLTAGE
OUTPUT
V
C
22µF
10V
IN
IN4
C
22µF
10V
C
22µF
10V
IN1
IN5
C
22µF
10V
C
22µF
10V
IN2
10k
IN6
R1
TIME
SLAVE OUTPUT
MASTER OUTPUT
Figure 4. Dual Outputs (1.5V and 1.2V) With Tracking
C
22µF
10V
10k
IN3
MASTER RAMP
R2
CONTINUOUS MODE
CONTINUOUS MODE
121k
OR OUTPUT
R
TA
SOFT-START
CAPACITOR
4611 F05
60.4k
R
C
TB
SS
SS
COMP
TRACK/SS
RUN
PLLFLTR/f
MODE_PLLIN
COMP
TRACK/SS
RUN
PLLFLTR/f
MODE_PLLIN
is
SGND
SGND
V
V
minimum to 9.8ms maximum. Tracking a rail in a man-
ner such that TRACK/SS ramps up at a rate faster than
210V/s may also warrant special attention, as explained
in the following.
Faster turn-on and tracking rates are achievable, if needed:
one need only decrease the default PLLFLTR/f
constant. Recall that the PLLFLTR/f
1.23V via a high impedance source (>350kΩ); also be aware
that the internal PLL filter contains an initially discharged
10nF capacitor prior to INTV
Requiring the output voltage to power up rapidly without
attention to the PLLFLTR/f
an initial switching frequency of operation that is initially
lower than expected (~250kHz)—only during the early
stages of start-up—until the PLLFLTR/f
steady-state value (1.23V by default).
IN
SET
IN
SET
LTM4611
LTM4611
GND
GND
INTV
INTV
CC
CC
V
V
DIFFV
DIFFV
OUT_LCL
OUT_LCL
PGOOD
PGOOD
V
V
V
V
OSNS
OSNS
OSNS
OSNS
V
V
OUT
OUT
V
OUT
OUT
V
FB
FB
+
–
+
–
R
69.8k
R
121k
FB1
FB2
SET
4611 F04
CC
C
C
C
47pF
C
47pF
FF2
FF1
P1
P2
being established.
time-constant results in
+
*
+
*
*
*
*SEE TABLE 5
C
470µF
6.3V
C
470µF
6.3V
SET
OUT1
OUT3
SET
LTM4611
*
*
pin is biased to
voltage reaches
C
100µF
6.3V
SET
C
100µF
6.3V
OUT2
OUT4
RC time
*

*
V
1.5V
15A
V
1.2V
15A
4611f
OUT
OUT