LM20143EVAL National Semiconductor, LM20143EVAL Datasheet - Page 3

• Manufacturer Part Number: LM20143EVAL
• Description: BOARD EVAL 3A POWERWISE LM20143
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM20143EVAL

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 1.2V
• Current - Output: 3A
• Voltage - Input: 2.95 ~ 5.5V
• Regulator Topology: Buck
• Frequency - Switching: 1.5MHz
• Board Type: Fully Populated
• Utilized Ic / Part: LM20143
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Power - Output: -

Oscillator
Error Amplifier and Modulator
Power Good
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
Limits in standard type are for T
+125°C. Minimum and Maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the
most likely parametric norm at T
ΔV
Voltages from the indicated pins to GND
AVIN, PVIN, EN, PGOOD, SS/
TRK, COMP, FB, RT
Storage Temperature
Junction Temperature
V
T
I
I
V
T
COMP_SRC
COMP_SNK
Symbol
R
R
V
T
UVLO_HYS
V
CL_BLANK
OUT
DC
F
OVP_HYS
V
V
F
ON_TIME
V
A
V
PGOOD
PGHYS
DS_ON
DS_ON
TRACK
V
Gm
OSCH
I
UVLO
OSCL
PGTH
I
I
I
I
I
I
VCC
OVP
SD
VOL
OH
CL
SS
FB
OL
FB
Q
MAX
/ΔI
OUT
Parameter
Feedback pin voltage
Load Regulation
Switch Current Limit Threshold
High-Side Switch On Resistance
Low-Side Switch On Resistance
Operating Quiescent Current
Shutdown Quiescent current
VIN Under Voltage Lockout
VIN Under Voltage Lockout Hysteresis
VCC Voltage
Soft-Start Pin Source Current
SS/TRK Accuracy, V
Oscillator Frequency
Oscillator Frequency
Maximum Duty Cycle
Minimum On Time
Current Sense Blanking Time
Feedback pin bias current
COMP Output Source Current
COMP Output Sink Current
Error Amplifier Transconductance
Error Amplifier Voltage Gain
Over Voltage Protection Rising Threshold
Over Voltage Protection Hysteresis
PGOOD Rising Threshold
PGOOD Falling Hysteresis
PGOOD deglitch time
PGOOD Low Sink Current
PGOOD High Leakage Current
J
J
= 25°C only, limits in bold face type apply over the junction temperature (T
= 25°C, and are provided for reference purposes only.
SS
- V
FB
-65°C to 150°C
Unless otherwise stated, the following conditions apply: AVIN = PVIN = VIN = 5V.
-0.3V to +6V
(Note 1)
150°C
Conditions
V
I
V
I
I
Non-switching, V
V
Rising V
Falling V
I
V
V
R
R
I
After Rising V
V
V
V
I
With respect to V
With respect to V
V
V
3
OUT
SW
SW
VCC
LOAD
COMP
IN
IN
EN
SS/TRK
SS/TRK
FB
FB
FB
PGOOD
PGOOD
T
T
= 49.9 kΩ
= 249 kΩ
= 2.95V to 5.5V
= 3.3V
= 3.5A
= 3.5A
= 0.8V
= V
= 1.0V, V
= 0V
PVIN, AVIN to GND
Junction Temperature
Operating Ratings
= 100 mA to 3A
= 0 µA
Power Dissipation (Note 2)
Lead Temperature (Soldering,
10 sec)
Minimum ESD Rating (Note 3)
= 0A
= ± 50 µA
COMP
= 0V
= 0.4V
= 0.4V
= 5V
IN
IN
= 0.6V
COMP
SW
FB
FB
FB
= 0.6V
= V
COMP
0.788
1350
2.45
2.45
Min
450
450
105
-10
4.3
0.6
80
80
92
2
J
) range of -40°C to
1500 1650
2000
0.08
Typ
510
100
100
100
510
108
0.8
4.8
3.5
2.7
2.7
4.5
36
32
90
45
85
80
94
16
−40°C to + 125°C
3
1
2
2
1
5
2.95V to 5.5V
0.812
www.national.com
Max
2.95
2.95
180
100
570
100
600
111
100
5.3
55
52
15
96
6
7
3
3
260°C
2.6W
±2kV
µmho
Unit
%/A
kHz
kHz
mΩ
mΩ
mA
mV
mV
V/V
mA
µA
µA
nA
µA
µA
nA
ns
ns
µs
%
%
%
%
%
V
A
V
V