LM2744EVAL National Semiconductor, LM2744EVAL Datasheet - Page 3

• Manufacturer Part Number: LM2744EVAL
• Description: BOARD EVALUATION LM2744
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM2744EVAL

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 1.2V
• Current - Output: 3.5A
• Voltage - Input: 1.8 ~ 5.5V
• Regulator Topology: Buck
• Frequency - Switching: 1MHz
• Board Type: Fully Populated
• Utilized Ic / Part: LM2744
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Power - Output: -

ERROR AMPLIFIER
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
V
boldface type apply over full Operating Temperature Range. Datasheet min/max specification limits are guaranteed by design,
test, or statistical analysis.
V
BOOT Voltage
All other pins
Junction Temperature
Storage Temperature
Soldering Information
Lead Temperature
(soldering, 10sec)
CC
CC
Symbol
I
t
t
I
I
I
SEN-TH
GBW
PWGD1
PWGD2
Q_VCC
I
SS-ON
SS-OC
= 3.3V unless otherwise indicated. Typicals and limits appearing in plain type apply for T
V
V
I
V
VREF
SR
EAO
G
ON
OS
EA
UVLO Thresholds
Operating V
Shutdown V
PWGD Pin Response Time
PWGD Pin Response Time
SS Pin Source Current
SS Pin Sink Current During Over
Current
I
Error Amplifier Input Offset
Voltage
Error Amplifier Unity Gain
Bandwidth
Error Amplifier DC Gain
Error Amplifier Slew Rate
EAO Pin Current Sourcing and
Sinking Capability
Error Amplifier Output Voltage
Current into V
SEN
Pin Source Current Trip Point
Parameter
CC
CC
REF
Current
Current
Pin
-0.3 to V
−65°C to 150°C
(Note 1)
-0.3 to 21V
-0.3 to 7V
CC
Rising
Falling
V
Fsw = 600kHz
V
Fsw = 600kHz
V
V
V
V
V
V
V
Minimum
Maximum
1.5V
+ 0.3V
CC
CC
CC
FB
FB
SS
SS
EAO
EAO
150°C
260°C
Rising
Falling
= 0V
= 2.5V
= 3.3V, V
= 5V, V
= 3.3V, V
≥
= 1.5, FB = 0.55V
= 1.5, FB = 0.65V
V
REF
Conditions
SD
3
≥
SD
SD
= 3.3V
0.5V
= 3.3V
= 0V
Operating Ratings
Infrared or Convection (20sec)
ESD Rating (Note 3)
Supply Voltage Range (V
Junction Temperature Range
(T
Thermal Resistance (θ
Voltage on FB and V
J
)
REF
Min
JA
1.0
1.0
20
-8
A
5
)
= T
CC
)
J
= 25°C. Limits appearing in
2.76
2.42
Typ
106
1.5
1.7
3.2
2.6
9.2
10
90
40
50
1
6
6
1
9
1
2
−40°C to +125°C
Max
2.1
2.1
0.5V to 1.5V
25
15
60
8
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155°C/W
3V to 6V
235°C
2 kV
Units
MHz
V/µs
mA
mV
mA
µA
µA
µA
µA
dB
nA
µs
µs
V
V
V