DC/DC uModule. LTM8022 Datasheet

LTM8022 uModule. Datasheet pdf. Equivalent

LTM8022 Datasheet
Recommendation LTM8022 Datasheet
Part LTM8022
Description 36V DC/DC uModule
Feature LTM8022; LTM8022 1A, 36V DC/DC µModule FEATURES n Complete Step-Down Switch Mode Power Supply n Wide Input V.
Manufacture Linear Technology
Datasheet
Download LTM8022 Datasheet




Linear Technology LTM8022
LTM8022
1A, 36V DC/DC µModule
FEATURES
n Complete Step-Down Switch Mode Power Supply
n Wide Input Voltage Range: 3.6V to 36V
n 0.8V to 10V Output Voltage
n 1A Output Current
n Adjustable Switching Frequency: 200kHz to 2.4MHz
n Current Mode Control
n (e4) RoHS Compliant Package with Gold Pad Finish
n Programmable Soft-Start
n Tiny, Low Profile (11.25mm × 9mm × 2.82mm)
Surface Mount LGA Package
APPLICATIONS
n Automotive Battery Regulation
n Power for Portable Products
n Distributed Supply Regulation
n Industrial Supplies
n Wall Transformer Regulation
DESCRIPTION
The LTM®8022 is a complete 1A, DC/DC step-down power
supply. Included in the package are the switching controller,
power switches, inductor, and all support components.
Operating over an input voltage range of 3.6V to 36V, the
LTM8022 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 (2.82mm) enables utilization of
unused space on the bottom of PC boards for high density
point of load regulation.
The LTM8022 is packaged in a thermally enhanced, compact
(11.25mm × 9mm) and low profile (2.82mm) overmolded
land grid array (LGA) package suitable for automated
assembly by standard surface mount equipment. The
LTM8022 is RoHS compliant.
L, LT, LTC, LTM, Linear Technology, Burst Mode and the Linear logo are registered trademarks of
Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
VIN*
7V TO
36V
7VIN to 36VIN, 5V/1A μModule® Regulator
2.2μF
VIN VOUT
LTM8022
RUN/SS
AUX
SHARE
BIAS
VOUT
5V
1A
4.7μF
PG
RT GND SYNC ADJ
29.4k
93.1k
8022 TA01a
*RUNNING VOLTAGE RANGE. PLEASE REFER TO
APPLICATIONS INFORMATION FOR START-UP DETAILS
Efficiency and Power Loss
100
VIN = 12V
90
80
EFFICIENCY
70
60
50
40
POWER
LOSS
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
30
0.001
0.01 0.1
LOAD CURRENT (A)
0
1
8022 TA01b
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Linear Technology LTM8022
LTM8022
ABSOLUTE MAXIMUM RATINGS
(Note 1)
VIN, RUN/SS Voltage.................................................40V
ADJ, RT, SHARE, Voltage ............................................5V
VOUT, AUX.................................................................10V
SYNC, PG..................................................................30V
BIAS..........................................................................16V
VIN + BIAS.................................................................56V
Internal Operating Temperature..............–40°C to 125°C
Solder Temperature............................................... 250°C
Storage Temperature..............................–55°C to 125°C
PIN CONFIGURATION
(See Table 3, Pin Assignment)
GND (BANK 3)
7
SHARE RT ADJ
6
5
4
3
VOUT
(BANK 2) 2
1
ABCDE FGH
LGA PACKAGE
50-LEAD (11.25mm s 9mm s 2.82mm)
TJMAX = 125°C, θJA = 23.4°C/W, θJC(BOTTOM) = 9.20°C/W,
θJC(TOP) = 25.10°C/W, θJBOARD = 16°C/W
θ VALUES DETERMINED PER JESD51-9
WEIGHT = 0.93g
SYNC
PG
RUN/SS
BIAS
AUX
VIN
(BANK 1)
ORDER INFORMATION
LEAD FREE FINISH
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE (Note 2)
LTM8022EV#PBF
LTM8022V
50-Pin (11.25mm × 9mm × 2.82mm) LGA –40°C to 85°C
LTM8022IV#PBF
LTM8022V
50-Pin (11.25mm × 9mm × 2.82mm) LGA –40°C to 85°C
LTM8022MPV#PBF
LTM8022MPV
50-Pin (11.25mm × 9mm × 2.82mm) LGA –55°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
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://linear.com/packaging/
8022fd
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Linear Technology LTM8022
LTM8022
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temp-
erature range, otherwise specifications are at TA = 25°C. VIN = 10V, VRUN/SS = 10V, VBIAS = 3V, RT = 60.4kΩ, CIN = 2.2μF, COUT = 4.7μF,
unless otherwise specified. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VIN Input DC Voltage
l 3.6
36
VOUT Output DC Voltage
0V < IOUT < 1A, RADJ Open
0V < IOUT < 1A, RADJ = 43.2k
0.8
10
RADJ(MIN)
Minimum Allowable RADJ
(Note 3)
42.2
IOUT(MAX)
Continuous Output DC Current
4V < VIN < 36V, COUT = 51μF (Note 4)
0
1
IQVIN
VIN Quiescent Current
VRUN/SS = 0.2V, RT = 174k
VBIAS = 3V, Not Switching, RT = 174k (E, I)
VBIAS = 3V, Not Switching, RT = 174k (MP)
VBIAS = 0V, Not Switching, RT = 174k
l
l
0.1 0.5
25 60
25 350
85 120
IQBIAS
BIAS Quiescent Current
VRUN/SS = 0.2V, RT = 174k
VBIAS = 3V, Not Switching, RT = 174k (E, I)
VBIAS = 3V, Not Switching, RT = 174k (MP)
VBIAS = 0V, Not Switching, RT = 174k
l
l
0.03 0.5
50 120
50 200
15
ΔVOUT/VOUT Line Regulation
3.6V < VIN < 36V, IOUT = 1A, VOUT = 3.3V
0.1
ΔVOUT/VOUT Load Regulation
VIN = 24V, 0V < IOUT < 1A, VOUT = 3.3V,
COUT = 51μF
0.4
VOUT(AC_RMS) Output Ripple (RMS)
VIN = 24V, IOUT = 1A, VOUT = 3.3V,
COUT = 51μF
10
fSW Switching Frequency
RT = 113kΩ, COUT = 51μF
325
ISC(OUT)
Output Short-Circuit Current
VIN = 36V, VOUT = 0V (Note 5)
3
VADJ Voltage at ADJ Pin
COUT = 51μF
l 765 790 805
VBIAS(MIN)
Minimum BIAS Voltage for Proper Operation
1.9 2.4
IADJ Current Out of ADJ Pin
ADJ = 1V, COUT = 51μF
2
IRUN/SS
RUN/SS Pin Current
VRUN/SS = 2.5V
5 10
VIH(RUN/SS)
RUN/SS Input High Voltage
COUT = 51μF
2.5
VIL(RUN/SS)
RUN/SS Input Low Voltage
COUT = 51μF
0.2
VPG(TH)
PG Threshold
VFB Rising
730
IPGO PG Leakage
VPG = 30V
0.1 1
IPG(SINK)
PG Sink Current
VPG = 0.4V
200 800
VSYNC(IL)
SYNC Low Threshold
fSYNC = 550kHz, COUT = 51μF
0.5
VSYNC(IH)
SYNC High Threshold
fSYNC = 550kHz, COUT = 51μF
0.7
ISYNC(BIAS)
SYNC Pin Bias Current
VSYNC = 0V
0.1
V
V
V
A
μA
μA
μA
μA
μA
μA
μA
μA
%
%
mV
kHz
A
mV
V
μA
μA
V
V
mV
μA
μA
V
V
μA
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 LTM8022E is guaranteed to meet performance specifications
from 0°C to 85°C ambient. Specifications over the full –40°C to
85°C ambient operating temperature range are assured by design,
characterization and correlation with statistical process controls. The
LTM8022I is guaranteed to meet specifications over the full –40°C to 85°C
ambient operating temperature range. The LTM8022MP is guaranteed to
meet specifications over the full –55°C to 125°C 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.
Note 4: COUT = 51μF is composed of a 4.7μF ceramic capacitor and a 47μF
electrolytic.
Note 5: Short circuit current at VIN = 36V is guaranteed by characterization
and correlation. 100% tested at VIN = 10V.
8022fd
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