FeaTures
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LTM8032
EN55022B Compliant 36V,
2A DC/DC µModule
Regulator
DescripTion
The
LTM
®
8032
is an electromagnetic compatible (EMC)
36V, 2A DC/DC step-down µModule
®
regulator designed
to meet the radiated emissions requirements of EN55022.
Conducted emission requirements can be met by adding
standard filter components. Included in the package are the
switching controller, power switches, inductor, filters and
all support components. Operating over an input voltage
range of 3.6V to 36V, the LTM8032 supports an output
voltage range of 0.8V to 10V, and a switching frequency
range of 200kHz to 2.4MHz, each set by a single resistor.
Only the bulk input and output filter capacitors are needed
to finish the design. The low profile package enables uti-
lization of unused space on the bottom of PC boards for
high density point of load regulation.
The LTM8032 is packaged in a thermally enhanced, com-
pact and low profile overmolded land grid array (LGA) and
ball grid array (BGA) packages suitable for automated
assembly by standard surface mount equipment. The
LTM8032 is available with SnPb (BGA) or RoHS compli-
ant terminal finish.
L,
LT, LTC, LTM, Linear Technology, the Linear logo, µModule and Burst Mode are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
n
Complete Step-Down Switch Mode Power Supply
Wide Input Voltage Range: 3.6V to 36V
2A Output Current
0.8V to 10V Output Voltage
Selectable Switching Frequency: 200kHz to 2.4MHz
EN55022 Class B Compliant
Current Mode Control
Programmable Soft-Start
SnPb (BGA) or RoHS Compliant (LGA and BGA)
Finish
Low Profile, Surface Mount LGA (9mm
×
15mm
×
2.82mm) and BGA (9mm
×
15mm
×
3.42mm)
Packages
applicaTions
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Automotive Battery Regulation
Power for Portable Products
Distributed Supply Regulation
Industrial Supplies
Wall Transformer Regulation
Typical applicaTion
Ultralow Noise 5V/2A DC/DC µModule Regulator
V
IN
*
7VDC TO 36VDC
V
IN
FIN
RUN/SS
2.2µF
AUX
LTM8032 BIAS
SHARE
PGOOD
V
OUT
10µF
V
OUT
5V
2A
EMISSIONS LEVEL (dBµV/m)
90
80
70
60
50
40
30
20
10
0
–10
0
100 200 300 400 500 600 700 800 900 1000
FREQUENCY (MHz)
8031 TA01b
EN55022
CLASS B
LIMIT
LTM8032 EMI Performance
RT SYNC GND ADJ
44.2k
f
SW
= 700kHz
*RUNNING VOLTAGE RANGE.
SEE APPLICATIONS FOR START-UP DETAILS
47.5k
8032 TA01a
8032fg
For more information
www.linear.com/LTM8032
1
LTM8032
absoluTe MaxiMuM raTings
(Note 1)
V
IN
, FIN, RUN/SS Voltage .........................................40V
ADJ, RT, SHARE Voltage .............................................5V
V
OUT
, AUX .................................................................10V
Current from AUX ................................................100mA
PGOOD, SYNC...........................................................30V
BIAS ..........................................................................25V
V
IN
+ BIAS .................................................................56V
Maximum Junction Temperature (Note 2) ............ 125°C
Solder Temperature............................................... 245°C
pin conFiguraTion
1
A
BANK 1
B
C
D
E
BANK 2
F
G
H
J
BANK 3
K
L
V
IN
FIN RUN/SS SYNC
LGA PACKAGE
71-LEAD (9mm
×
15mm
×
2.82mm)
T
JMAX
= 125°C,
θ
JA
= 25.2°C/W,
θ
JCbottom
= 10.3°C/W,
θ
JCtop
= 15.8°C/W,
θ
JB
= 11.4°C/W, WEIGHT = 1.2g
θ
VALUES DETERMINED PER JESD51-9
BIAS
AUX
RT
SHARE
ADJ
PGOOD
BANK 3
BANK 2
BANK 1
2
TOP VIEW
3
4
5
V
OUT
6
GND
7
A
B
C
D
E
F
G
H
J
K
L
V
IN
FIN RUN/SS SYNC
BGA PACKAGE
71-LEAD (9mm
×
15mm
×
3.42mm)
T
JMAX
= 125°C,
θ
JA
= 25.6°C/W,
θ
JCbottom
= 11.0°C/W,
θ
JCtop
= 15.8°C/W,
θ
JB
= 11.4°C/W, WEIGHT = 1.2g
θ
VALUES DETERMINED PER JEDEC 51-9, 51-12
BIAS
AUX
RT
SHARE
ADJ
PGOOD
1
2
TOP VIEW
3
4
5
V
OUT
6
GND
7
orDer inForMaTion
PART NUMBER
LTM8032EV#PBF
LTM8032IV#PBF
LTM8032MPV#PBF
LTM8032EY#PBF
LTM8032IY#PBF
LTM8032MPY#PBF
LTM8032MPY
PAD OR BALL FINISH
Au (RoHS)
Au (RoHS)
Au (RoHS)
SAC305 (RoHS)
SAC305 (RoHS)
SAC305 (RoHS)
SnPb (63/37)
PART MARKING*
DEVICE
LTM8032V
LTM8032V
LTM8032MPV
LTM8032Y
LTM8032Y
LTM8032Y
LTM8032Y
CODE
e4
e4
e4
e1
e1
e1
e0
PACKAGE
TYPE
LGA
LGA
LGA
BGA
BGA
BGA
BGA
MSL
RATING
3
3
3
3
3
3
3
TEMPERATURE RANGE
(Note 2)
–40°C to 125°C
–40°C to 125°C
–55°C to 125°C
–40°C to 125°C
–40°C to 125°C
–55°C to 125°C
–55°C to 125°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.
•
Pb-free and Non-Pb-free Part Markings:
www.linear.com/leadfree
•
Recommended LGA and BGA PCB Assembly and Manufacturing
Procedures:
www.linear.com/umodule/pcbassembly
•
LGA and BGA Package and Tray Drawings:
www.linear.com/packaging
8032fg
2
For more information
www.linear.com/LTM8032
LTM8032
elecTrical characTerisTics
SYMBOL
V
IN
V
OUT
I
OUT
I
Q(VIN)
I
Q(BIAS)
∆V
OUT
V
OUT
f
SW
V
ADJ
V
BIAS(MIN)
I
ADJ
I
RUN/SS
V
IH(RUN/SS)
V
IL(RUN/SS)
V
PG(TH)
I
PGO
I
PGSINK
V
SYNCIL
V
SYNCIH
I
SYNC(BIAS)
V
IN(RIPPLE)
PARAMETER
Input DC Voltage
Output DC Voltage
Continuous Output DC Current
V
IN
Quiescent Current
BIAS Quiescent Current
0.2A < I
OUT
≤ 2A, R
ADJ
Open
0.2A < I
OUT
≤ 2A, R
ADJ
= 21.6k
V
IN
= 24V
V
RUN/SS
= 0.2V
V
BIAS
= 3V, Not Switching
V
BIAS
= 0V, Not Switching
V
RUN/SS
= 0.2V
V
BIAS
= 3V, Not Switching
V
BIAS
= 0V, Not Switching
10V ≤ V
IN
≤ 36V, I
OUT
= 1A, V
OUT
= 3.3V
V
IN
= 24V, 0.2A ≤ I
OUT
≤ 2A, V
OUT
= 3.3V
V
IN
= 24V, I
OUT
= 2A, V
OUT
= 3.3V
R
T
= 113k
l
l
The
l
denotes the specifications which apply over the full internal operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 10V, V
RUN/SS
= 10V, V
BIAS
= 3V, unless otherwise specified.
CONDITIONS
l
MIN
3.6
TYP
0.8
10
MAX
36
UNITS
V
V
V
2
0.6
25
88
0.03
60
1
0.1
0.3
6
325
765
790
1.9
4
5
2.5
0.2
730
10
815
2.8
60
120
120
5
A
µA
µA
µA
µA
µA
µA
%
%
mV
kHz
mV
V
µA
µA
V
V
mV
µA
µA
V
V
µA
dBµV
dBµV
dBµV
l
Line Regulation
Load Regulation
Switching Frequency
Voltage at ADJ Pin
Minimum BIAS Voltage for Proper Operation
Current Out of ADJ Pin
RUN/SS Pin Current
RUN/SS Input High Voltage
RUN/SS Input Low Voltage
ADJ Voltage Threshold for PGOOD to Switch
PGOOD Leakage
PGOOD Sink Current
SYNC Input Low Threshold
SYNC Input High Threshold
SYNC Pin Bias Current
550kHz Narrowband Conducted Emission
1MHz Narrowband Conducted Emission
3MHz Narrowband Conducted Emission
V
OUT(AC_RMS)
Output Ripple (RMS)
V
RUN/SS
= 0V, V
ADJ
= 0V, V
OUT
= 1V
V
RUN/SS
= 2.5V
V
PG
= 30V
V
PG
= 0.4V
f
SYNC
= 550kHz
f
SYNC
= 550kHz
V
SYNC
= 0V, V
BIAS
= 0V
V
IN
= 24V, V
OUT
= 3.3V, I
OUT
= 2A, f
SW
= 550kHz,
5µH LISN
0.7
200
0.1
800
1
0.5
0.1
89
69
51
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 LTM8032E is guaranteed to meet performance specifications
from 0°C to 125°C internal. Specifications over the –40°C to 125°C
internal temperature range are assured by design, characterization and
correlation with statistical process controls. LTM8032I is guaranteed
to meet specifications over the full –40°C to 125°C internal operating
temperature range. The LTM8032MP is guaranteed to meet specifications
over the full –55°C to 125°C internal operating temperature range. Note
that the maximum internal temperature is determined by specific operating
conditions in conjunction with board layout, the rated package thermal
resistance and other environmental factors.
8032fg
For more information
www.linear.com/LTM8032
3
LTM8032
Typical perForMance characTerisTics
T
A
= 25°C, unless otherwise noted.
3.3V
OUT
Efficiency
100
90
80
EFFICIENCY (%)
EFFICIENCY (%)
70
60
50
40
30
20
10
0
0.01
1
0.1
OUTPUT CURRENT (A)
5.5V
IN
12V
IN
24V
IN
36V
IN
10
8031 G01
5V
OUT
Efficiency
100
90
80
EFFICIENCY (%)
70
60
50
40
30
20
10
0
0.01
1
0.1
OUTPUT CURRENT (A)
12V
IN
24V
IN
36V
IN
10
8031 G02
8V
OUT
Efficiency
100
90
80
70
60
50
40
30
20
10
0
0.01
1
0.1
OUTPUT CURRENT (A)
12V
IN
24V
IN
36V
IN
10
8031 G03
Input Current vs Output Current,
3.3V
OUT
1600
1400
INPUT CURRENT (mA)
1200
1000
800
600
400
200
0
0
1000
500
1500
OUTPUT CURRENT (mA)
2000
8032 G04
Input Current vs Output Current,
5V
OUT
1200
1000
INPUT CURRENT (mA)
800
600
400
200
0
12V
IN
24V
IN
36V
IN
1800
1600
INPUT CURRENT (mA)
1400
Input Current vs Output Current,
8V
OUT
12V
IN
24V
IN
36V
IN
5.5V
IN
12V
IN
24V
IN
36V
IN
1200
1000
800
600
400
200
0
500
1000
1500
OUTPUT CURRENT (mA)
2000
8032 G05
0
1
1000
500
1500
OUTPUT CURRENT (mA)
2000
8032 G06
Minimum Required Input Voltage
vs Output Voltage, I
OUT
= 2A
14
12
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
10
8
6
4
2
5.0
4.5
Minimum Required Input Voltage
vs Load Current, V
OUT
= 2.5V
6.0
5.5
INPUT VOLTAGE (V)
5.0
4.5
4.0
3.5
3.0
Minimum Required Input Voltage
vs Load Current, V
OUT
= 3.3V
4.0
3.5
3.0
2.5
2.0
TO RUN
TO START
0
500
1000
1500
LOAD CURRENT (mA)
2000
8032 G08
TO RUN
TO START
RUN/SS ENABLED
0
500
1000
1500
LOAD CURRENT (mA)
2000
8032 G09
0
2
4
6
8
OUTPUT VOLTAGE (V)
10
8032 G07
8032fg
4
For more information
www.linear.com/LTM8032
LTM8032
Typical perForMance characTerisTics
T
A
= 25°C, unless otherwise noted.
Minimum Required Input Voltage
vs Load Current, V
OUT
= 5V
7.5
11.0
10.5
10.0
9.5
9.0
8.5
8.0
TO RUN
TO START
RUN/SS ENABLED
0
500
1000
1500
LOAD CURRENT (mA)
2000
8032 G11
Minimum Required Input Voltage
vs Load Current, V
OUT
= 8V
30
25
BIAS CURRENT (mA)
20
15
10
5
0
Bias Current vs Output Current
3.3V
OUT
5V
OUT
8V
OUT
7.0
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
TO RUN
TO START
RUN/SS ENABLED
0
500
1500
1000
LOAD CURRENT (mA)
2000
8032 G10
6.5
6.0
5.5
5.0
0
500
1000
1500
OUTPUT CURRENT (mA)
2000
8032 G12
Output Current vs Input Voltage
(Output Shorted)
3200
3000
OUTPUT CURRENT (mA)
2800
2600
2400
2200
2000
1800
1600
0
10
20
INPUT VOLTAGE (V)
8032 G13
Input Current vs Input Voltage
(Output Shorted)
1200
1000
TEMPERATURE RISE (°C)
INPUT CURRENT (mA)
800
600
400
200
0
35
30
25
20
15
10
5
0
10
20
30
INPUT VOLTAGE (V)
40
8032 G14
Temperature Rise vs
Load Current, V
OUT
= 2.5V (LGA)
30
40
0
5V
IN
12V
IN
24V
IN
36V
IN
0
500
1000
1500
2000
2500
8032 G15
LOAD CURRENT (mA)
Temperature Rise vs
Load Current, V
OUT
= 3.3V (LGA)
40
35
TEMPERATURE RISE (°C)
TEMPERATURE RISE (°C)
30
25
20
15
10
5
0
0
500
1000
5V
IN
12V
IN
24V
IN
36V
IN
2000
1500
LOAD CURRENT (mA)
2500
8032 G16
Temperature Rise vs
Load Current, V
OUT
= 5V (LGA)
40
35
30
25
20
15
10
5
0
0
500
1000
12V
IN
24V
IN
36V
IN
2000
1500
LOAD CURRENT (mA)
2500
8032 G17
50
45
TEMPERATURE RISE (°C)
40
35
30
25
20
15
10
5
0
Temperature Rise vs
Load Current, V
OUT
= 8V (LGA)
12V
IN
24V
IN
36V
IN
0
500
1500
2000
1000
LOAD CURRENT (mA)
2500
8032 G18
8032fg
For more information
www.linear.com/LTM8032
5
