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LTM8021IV#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18
LTM8021
1
8021fd
For more information www.linear.com/LTM8021
Typical applicaTion
FeaTures
applicaTions
DescripTion
36V
IN
, 500mA
Step-Down DC/DC
µ
Module
The LT M
®
8021 is a 36V
IN
500mA, step-down DC/DC
µModule
®
. Included in the package are the switching
controller, power switches, inductor, and all support
components. Operating over an input voltage range of 3V
to 36V, the L
TM8021 supports an output voltage range of
0.8V to 5V, set by a single resistor. Only an output and
bulk input capacitor are needed to finish the design.
The low profile package (2.82mm) enables utilization of
unused space on the bottom of PC boards for high den
-
sity point of load regulation. A built-in soft-start timer is
adjustable with just a resistor and capacitor.
The L
TM8021 is packaged in a thermally enhanced,
compact (11.25mm × 6.25mm) and low profile (2.82mm)
overmolded land grid array (LGA) package suitable
for automated assembly by standard surface mount
equipment. The LTM8021 is RoHS compliant.
7V
IN
to 36V
IN
, 5V/500mA µModule Regulator
n
Complete Switch Mode Power Supply
n
Wide Input Voltage Range: 3V to 36V
n
500mA Output Current
n
0.8V to 5V Output Voltage
n
Fixed 1.1MHz Switching Frequency
n
Current Mode Control
n
(e4) RoHS Compliant Package with Gold
Pad Finish
n
Programmable Soft-Start
n
Tiny, Low Profile (11.25mm × 6.25mm × 2.82mm)
Surface Mount LGA Package
n
Automotive Battery Regulation
n
Power for Portable Products
n
Distributed Supply Regulation
n
Industrial Supplies
n
Wall Transformer Regulation
Efficiency and Power Loss
LTM8021
8021 TA01a
V
IN
*
7V TO
36V
V
OUT
5V AT 500mA
1µF
2.2µF
19.1k
RUN/SS
IN
GND ADJ
BIAS
OUT
*RUNNING VOLTAGE RANGE. PLEASE REFER TO THE
APPLICATIONS INFORMATION SECTION FOR START-UP DETAILS.
0
POWER LOSS (mW)
100
200
300
450
400
50
150
250
350
8021 TA01b
LOAD CURRENT (mA)
1.00
30
EFFICIENCY (%)
40
50
70
60
10.00 100.00
90
80
1000.00
POWER
LOSS
EFFICIENCY
L, LT, LTC, LTM, µModule, PolyPhase, Linear Technology and the Linear logo are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
LTM8021
2
8021fd
For more information www.linear.com/LTM8021
absoluTe MaxiMuM raTings
V
IN
, RUN/SS Voltage ................................................. 40V
RUN/SS Above V
IN
...................................................... 3V
ADJ Voltage ................................................................5V
BIAS Voltage ...............................................................7V
V
OUT
Voltage ............................................................. 10V
Internal Operating Temperature
Range (Note 2) ....................................... –40°C to 125°C
Maximum Solder Temperature .............................. 260°C
Storage Temperature Range .................. –55°C to 125°C
(Note 1)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Input DC Voltage V
RUN/SS
= 5V, R
ADJ
= Open 3 36 V
V
OUT
Output DC Voltage 0 < I
OUT
< 500mA; R
ADJ
Open
0 < I
OUT
< 500mA; R
ADJ
= 19.1k, 0.1%
0.8
5
V
V
R
ADJ(MIN)
Minimum Allowable R
ADJ
Note 3
18
kW
I
LK
Leakage from IN to OUT RUN/SS = V
BIAS
= 0V, R
ADJ
Open 2.7 6 µA
I
OUT
Continuous Output DC Current 5V ≤ V
IN
≤ 36V, V
BIAS
= V
OUT
0 500 mA
I
Q(VIN)
Quiescent Current into V
IN
RUN/SS = 0.2V, V
BIAS
, R
ADJ
Open
Not Switching
0.1
1.5
1
2.5
µA
mA
I
Q(BIAS)
Quiescent Current into BIAS Not Switching 0.15 µA
∆V
OUT
/V
OUT
Line Regulation 5V ≤ V
IN
≤ 36V, I
OUT
= 500mA
R
ADJ
= Open
0.5 %
∆V
OUT
/V
OUT
Load Regulation V
IN
= 24V, 0 ≤ I
OUT
≤ 500mA, V
BIAS
= V
OUT
0.35 %
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C, V
IN
= 10V, V
RUN/SS
= 10V, V
BIAS
= 3V, R
ADJ
= 31.6k.
orDer inForMaTion
pin conFiguraTion
V
IN
BANK 1
V
OUT
BANK 2
GND
BANK 3
ADJ
BIAS
RUN/SS
HBA DC
5
1
2
3
4
E F
LGA PACKAGE
35-LEAD (11.25mm × 6.25mm × 2.82mm)
G
TOP VIEW
T
JMAX
= 125°C, θ
JA
= 36.9°C/W, θ
JB
= 20.9°C/W, WEIGHT = 0.49g
θ
JC(TOP)
= 41.74°C/W, θ
JC(BOTTOM)
= 17.8°C/W
PART NUMBER PAD OR BALL FINISH PART MARKING* PACKAGE
TYPE
MSL
RATING
TEMPERATURE RANGE
(Note 2)
DEVICE
FINISH CODE
LTM8021EV#PBF Au (RoHS) LTM8021V e4 LGA 3 –40°C to 125°C
LTM8021IV#PBF Au (RoHS) LTM8021V e4 LGA 3 –40°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.
• 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 Tray Drawings:
www
.linear.com/packaging
LTM8021
3
8021fd
For more information www.linear.com/LTM8021
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 LTM8021E is guaranteed to meet performance specifications
from 0°C to 125°C internal. Specifications over the full –40°C to 125°C
internal operating temperature range are assured by design,
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C, V
IN
= 10V, V
RUN/SS
= 10V, V
BIAS
= 3V, R
ADJ
= 31.6k.
characterization and correlation with statistical process controls. The
LTM8021I is guaranteed to meet specifications over the full –40°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.
Note 3: Guaranteed by design.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OUT(DC)
DC Output Voltage
V
IN
= 24V, 0 ≤ I
OUT
≤ 500mA
R
ADJ
= 31.6k, 0.1%
3.3
V
V
OUT(AC_RMS)
Output Voltage Ripple (RMS) V
IN
= 24V, I
OUT
= 250mA
C
OUT
= 2.2µF, V
BIAS
= V
OUT
1 mV
f
SW
Switching Frequency I
OUT
= 500mA 0.9 1.1 1.3 MHz
I
OSC
Short-Circuit Output Current V
IN
= 36V, V
BIAS
= V
OUT
= 0V 900 mA
I
ISC
Short-Circuit Input Current V
IN
= 36V, V
BIAS
= V
OUT
= 0V 25 mA
ADJ Voltage at ADJ Pin R
ADJ
Open
l
0.79 0.80 0.83 V
V
BIAS(MIN)
Minimum BIAS Voltage for Proper
Operation
I
OUT
= 500mA 2.2 3 V
I
ADJ
Current Out of ADJ Pin V
OUT
= 5V, V
ADJ
= 0V, RUN/SS = 0V 50 µA
I
RUN/SS
RUN/SS Pin Current V
RUN/SS
= 2.5V, R
ADJ
Open 23 µA
V
IH(RUN/SS)
RUN/SS Input High Voltage R
ADJ
Open, I
OUT
= 500mA 1.6 V
V
IL(RUN/SS)
RUN/SS Input Low Voltage R
ADJ
Open, I
OUT
= 500mA 0.5 V
R
FB
Internal Feedback Resistor RUN/SS = V
BIAS
= V
ADJ
= 0V 100
kW
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18

LTM8021IV#PBF

Mfr. #:
Buy LTM8021IV#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 36VIN, 500mA Buck DC/DC Module
Lifecycle:
New from this manufacturer.
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