LM20144EVAL National Semiconductor, LM20144EVAL Datasheet - Page 2

BOARD EVAL 4A POWERWISE LM20144

LM20144EVAL

Manufacturer Part Number
LM20144EVAL
Description
BOARD EVAL 4A POWERWISE LM20144
Manufacturer
National Semiconductor
Series
PowerWise®r
Datasheets

Specifications of LM20144EVAL

Main Purpose
DC/DC, Step Down
Outputs And Type
1, Non-Isolated
Voltage - Output
1.2V
Current - Output
4A
Voltage - Input
2.95 ~ 5.5V
Regulator Topology
Buck
Frequency - Switching
1MHz
Board Type
Fully Populated
Utilized Ic / Part
LM20144
Lead Free Status / RoHS Status
Not applicable / Not applicable
Power - Output
-
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Bill of Materials
Connection Descriptions
Designator
Test Points
Terminal Silkscreen
C
C
C
R
R
R
R
C
C
C
C
U1
R
C
R
VCC
BYP
OUT
L
FB1
FB2
PG
C1
C1
C2
SS
IN
F
F
T
SS/TRACK
PGOOD
VOUT
GND
VIN
EN
Synchronous Buck Regulator
100 µF, 1210, X5R, 6.3V
100 µF, 1210, X5R, 6.3V
100 nF, 0603, X7R, 16V
3.3 nF, 0603, X7R, 25V
33 nF, 0603, X7R, 25V
1 µF, 0603, X5R, 6.3V
1 µF, 0603, X5R, 6.3V
3.09 kΩ, 0603
4.99 kΩ, 0603
100 kΩ, 0603
Description
10 kΩ, 0603
10 kΩ, 0603
1 µH, 6 mΩ
Test Points
1Ω, 0603
OPEN
This terminal is the input voltage to the device. The device will operation over the input voltage
range of 2.95V to 5.5V. The absolute maximum voltage rating for this pin is 6V.
This terminal is the ground connection to the device. There are two different GND connections
on the PCB. One should be used for the input supply and the other for the load.
This terminal connects to the output voltage of the power supply and should be connected to
the load.
This terminal connects to the enable pin of the device. This terminal should be connected to
V
the device. The operating voltage for this pin should not exceed 5.5V. The absolute maximum
voltage rating on this pin is 6V.
This terminal provides access to the SS/TRK pin of the device. Connections to this terminal
are not needed for most applications. The feedback pin of the device will track the voltage on
the SS/TRK pin if it is driven with an external voltage source that is below the 0.8V reference.
The voltage on this pin should not exceed 5.5V during normal operation. The absolute
maximum voltage rating on this pin is 6V.
This terminal connects to the power good output of the device. There is a 10 kΩ pull-up resistor
from this pin to the input voltage. The voltage on this pin should not exceed 5.5V during normal
operation and has an absolute maximum voltage rating of 6V.
IN
or driven externally. If driven externally, a voltage typically greater than 1.18V will enable
GRM32ER60J107ME20
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GRM188R71C104KA01
GRM188R60J105KA01
GRM188R60J105KA01
CRCW06031002F-e3
CRCW06033091F-e3
CRCW06034991F-e3
CRCW06031002F-e3
CRCW06031003F-e3
CRCW06031R0J-e3
160-1026-02-01-00
VJ0603Y332KXXA
VJ0603Y333KXXA
MSS1038-102NL
Part Number
LM20144MH
2
OPEN
Description
Qty
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
1
7
National Semiconductor
Vishay-Vitramon
Vishay-Vitramon
Manufacturer
Vishay-Dale
Vishay-Dale
Vishay-Dale
Vishay-Dale
Vishay-Dale
Vishay-Dale
Cambion
Coilcraft
Murata
Murata
Murata
Murata
Murata
N/A

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