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LTM4605EV#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P26
LTM4605
1
4605fd
For more information www.linear.com/LTM4605
Features Description
High Efficiency
Buck-Boost DC/DC
µModule Regulator
The LT M
®
4605 is a high efficiency switching mode buck-
boost power supply. Included in the package are the
switching controller, power FETs, and support components.
Operating over an input voltage range of 4.5V to 20V, the
LTM4605 supports an output voltage range of 0.8V to
16V, set by a resistor. This high efficiency design delivers
up to 5A continuous current in boost mode (12A in buck
mode). Only the inductor, sense resistor, bulk input and
output capacitors are needed to finish the design.
The low profile package enables utilization of unused space
on the bottom of PC boards for high density point of load
regulation. The high switching frequency and current
mode architecture enable a very fast transient response
to line and load changes. The LTM4605 can be frequency
synchronized with an external clock to reduce undesirable
frequency harmonics.
Fault protection features include overvoltage and foldback
current protection. The DC/DC µModule
®
regulator is of-
fered in a small and thermally enhanced 15mm ×
15mm
× 2.8mm LGA package. The LTM4605 is Pb-free and
RoHS compliant.
applications
n
Single Inductor Architecture Allows V
IN
Above,
Below or Equal to V
OUT
n
Wide V
IN
Range: 4.5V to 20V
n
Wide V
OUT
Range: 0.8V to 16V
n
5A DC Typical (12A DC Typical at Buck Mode)
n
High Efficiency Up to 98%
n
Current Mode Control
n
Power Good Output Signal
n
Phase-Lockable Fixed Frequency: 200kHz to 400kHz
n
Ultrafast Transient Response
n
Current Foldback Protection
n
Output Overvoltage Protection
n
Small, Low Profile Surface Mount LGA Package
(15mm × 15mm × 2.8mm)
n
Telecom, Servers and Networking Equipment
n
Industrial and Automotive Equipment
n
High Power Battery-Operated Devices
L, LT , LT C , LT M, Linear Technology, the Linear logo, µModule ad PolyPhase are registered
trademarks and No R
SENSE
is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
V
IN
(V)
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
EFFICIENCY (%)
99
98
97
96
95
94
93
92
91
90
POWER LOSS (W)
8
0
7
6
5
4
3
2
1
4605 TA01b
20
V
OUT
= 12V
I
LOAD
= 5A
f = 200kHz
typical application
12V/5A Buck-Boost DC/DC µModule Regulator with 4.5V to 20V Input
Efficiency and Power Loss
vs Input Voltage
V
OUT
FCB
RUN
SW1
SW2
R
SENSE
SENSE
–
SS
V
FB
SGND
PLLIN
LTM4605
4.7µH
7.15k
10µF
35V
330µF
25V
4605 TA01
V
OUT
12V
5A
CLOCK SYNC
V
IN
PGND
V
IN
4.5V TO 20V
0.1µF
10µF
35V
+
ON/OFF
SENSE
+
6mΩ
LTM4605
2
4605fd
For more information www.linear.com/LTM4605
absolute MaxiMuM ratings
V
IN
............................................................. –0.3V to 20V
V
OUT
..............................................................0.8V to 16V
INTV
CC
, EXTV
CC
, RUN, SS, PGOOD ............. –0.3V to 7V
SW1, SW2 (Note 6) .......................................–5V to 20V
V
FB
, COMP ................................................ –0.3V to 2.4V
FCB, STBYMD .......................................–0.3V to INTV
CC
PLLIN ........................................................ –0.3V to 5.5V
PLLFLTR ................................................... –0.3V to 2.7V
Operating Temperature Range
(Note 2) ...............................................–40°C to 85°C
Storage Temperature Range .................. –55°C to 125°C
(Note 1)
pin conFiguration
(See Table 6. Pin Assignment)
LGA PACKAGE
141-LEAD (15mm × 15mm × 2.8mm)
BANK 2
BANK 1
BANK 3
BANK 4
BANK 5
BANK 6
TOP VIEW
1 2 3 4 5 6 7 8 109 11 12
L
K
J
H
G
F
E
D
C
B
M
A
T
JMAX
= 125°C, θ
JP
= 4°C/W
WEIGHT = 1.5g
electrical characteristics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C (Note 2), V
IN
= 12V. Per typical application (front page) configuration.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Specifications
V
IN(DC)
Input DC Voltage
l
4.5 20 V
V
IN(UVLO)
Undervoltage Lockout Threshold V
IN
Falling
l
3.4 4 V
I
Q(VIN)
Input Supply Bias Current
Normal
Standby
Shutdown Supply Current
V
RUN
= 0V, V
STBYMD
> 2V
V
RUN
= 0V, V
STBYMD
= Open
2.8
1.6
35
60
mA
mA
µA
orDer inForMation
PART NUMBER PAD OR BALL FINISH
PART MARKING*
PACKAGE
TYPE
MSL
RATING
TEMPERATURE RANGE
(SEE NOTE 2)DEVICE FINISH CODE
LTM4605EV#PBF Au (RoHS) LTM4605V e4 LGA 3 –40°C to 85°C
LTM4605IV#PBF Au (RoHS) LTM4605V e4 LGA 3 –40°C to 85°C
Consult Marketing for parts specified with wider operating temperature
ranges. *Device temperature grade is indicated by a label on the shipping
container. Pad or ball finish code is per IPC/JEDEC J-STD-609.
• Terminal Finish Part Marking:
www.linear.com/leadfree
• Recommended LGA and BGA PCB Assembly and Manufacturing
Procedures:
www
.
linear.com/umodule/pcbassembly
• LGA and BGA Package and T
ray Drawings:
www.linear.com/packaging
LTM4605
3
4605fd
For more information www.linear.com/LTM4605
electrical characteristics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C (Note 2), V
IN
= 12V. Per typical application (front page) configuration.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Output Specifications
I
OUTDC
Output Continuous Current Range
(See Output Current Derating Curves
for Different V
IN
, V
OUT
and T
A
)
V
IN
= 12V, V
OUT
= 5V
V
IN
= 6V, V
OUT
= 12V
12
5
A
A
ΔV
FB
/V
FB(NOM)
Reference Voltage Line Regulation
Accuracy
V
IN
= 4.5V to 20V, V
COMP
= 1.2V (Note 3) 0.002 0.02 %/V
ΔV
FB
/V
FB(LOAD)
Load Regulation Accuracy V
COMP
= 1.2V to 0.7V
V
COMP
= 1.2V to 1.8V (Note 3)
l
l
0.15
–0.15
0.5
–0.5
%
%
Switch Section
M1 t
r
Turn-On Time (Note 4) Drain to Source Voltage V
DS
= 12V,
Bias Current I
SW
= 10mA
50 ns
M1 t
f
Turn-Off Time Drain to Source Voltage V
DS
= 12V,
Bias Current I
SW
= 10mA
40 ns
M3 t
r
Turn-On Time Drain to Source Voltage V
DS
= 12V,
Bias Current I
SW
= 10mA
25 ns
M3 t
f
Turn-Off Time Drain to Source Voltage V
DS
= 12V,
Bias Current I
SW
= 10mA
20 ns
M2, M4 t
r
Turn-On Time Drain to Source Voltage V
DS
= 12V,
Bias Current I
SW
= 10mA
20 ns
M2, M4 t
f
Turn-Off Time Drain to Source Voltage V
DS
= 12V,
Bias Current I
SW
= 10mA
20 ns
t
1d
M1 Off to M2 On Delay (Note 4) Drain to Source Voltage V
DS
= 12V,
Bias Current I
SW
= 10mA
50 ns
t
2d
M2 Off to M1 On Delay Drain to Source Voltage V
DS
= 12V,
Bias Current I
SW
= 10mA
50 ns
t
3d
M3 Off to M4 On Delay Drain to Source Voltage V
DS
= 12V,
Bias Current I
SW
= 10mA
50 ns
t
4d
M4 Off to M3 On Delay Drain to Source Voltage V
DS
= 12V,
Bias Current I
SW
= 10mA
50 ns
Mode Transition 1 M2 Off to M4 On Delay Drain to Source Voltage V
DS
= 12V,
Bias Current I
SW
= 10mA
220 ns
Mode Transition 2 M4 Off to M2 On Delay Drain to Source Voltage V
DS
= 12V,
Bias Current I
SW
= 10mA
220 ns
M1 R
DS(ON)
Static Drain-to-Source On-Resistance Bias Current I
SW
= 3A 6.5 mΩ
M2 R
DS(ON)
Static Drain-to-Source On-Resistance Bias Current I
SW
= 3A 8 12 mΩ
M3 R
DS(ON)
Static Drain-to-Source On-Resistance Bias Current I
SW
= 3A 8 12 mΩ
M4 R
DS(ON)
Static Drain-to-Source On-Resistance Bias Current I
SW
= 3A 8 12 mΩ
Oscillator and Phase-Locked Loop
f
NOM
Nominal Frequency V
PLLFLTR
= 1.2V 260 300 330 kHz
f
LOW
Lowest Frequency V
PLLFLTR
= 0V 170 200 220 kHz
f
HIGH
Highest Frequency V
PLLFLTR
= 2.4V 340 400 440 kHz
R
PLLIN
PLLIN Input Resistance 50 kΩ
I
PLLFLTR
Phase Detector Output Current f
PLLIN
< f
OSC
f
PLLIN
> f
OSC
–15
15
µA
µA
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P26

LTM4605EV#PBF

Mfr. #:
Buy LTM4605EV#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 20V, 5A Buck-boost Module Regulator
Lifecycle:
New from this manufacturer.
Delivery:
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