LM2743-19AEVAL National Semiconductor, LM2743-19AEVAL Datasheet - Page 4

• Manufacturer Part Number: LM2743-19AEVAL
• Description: BOARD EVALUATION LM2743-19A
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM2743-19AEVAL

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 1.2 ~ 3.3V
• Current - Output: 19A
• Voltage - Input: 8 ~ 14V
• Regulator Topology: Buck
• Frequency - Switching: 300kHz
• Board Type: Fully Populated
• Utilized Ic / Part: LM2743
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

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GATE DRIVE
OSCILLATOR
LOGIC INPUTS AND OUTPUTS
Note 1: Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions for which the device
operates correctly. Operating Ratings do not imply guaranteed performance limits.
Note 2: The power MOSFETs can run on a separate 1V to 16V rail (Input voltage, V
Note 3: The human body model is a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin.
V
V
V
PWGD-TH-LO
V
V
PWGD-TH-HI
Symbol
PWGD-HYS
I
R
R
R
R
V
V
Q-BOOT
STBY-IH
HG_UP
HG_DN
STBY-IL
LG_UP
LG_DN
f
SD-IH
SW
SD-IL
D
BOOT Pin Quiescent Current
High-Side MOSFET Driver Pull-Up
ON resistance
High-Side MOSFET Driver Pull-
Down ON resistance
Low-Side MOSFET Driver Pull-Up
ON resistance
Low-Side MOSFET Driver Pull-
Down ON resistance
PWM Frequency
Max High-Side Duty Cycle
Standby High Trip Point
Standby Low Trip Point
SD Pin Logic High Trip Point
SD Pin Logic Low Trip Point
PWGD Pin Trip Points
PWGD Pin Trip Points
PWGD Hysteresis
Parameter
V
V
HG = 5V @ 350mA Sourcing
V
LG = 5V @ 350mA Sourcing
R
R
R
R
f
f
f
V
Rising
V
Falling
V
V
FB Falling
FB Rising
FB Falling
FB Rising
SW
SW
SW
BOOT
BOOT
BOOT
FADJ
FADJ
FADJ
FADJ
FB
FB
SD
SD
= 300kHz
= 600kHz
= 1MHz
= 0.575V, V
= 0.575V, V
Rising
Falling
= 702.1 kΩ
= 98.74 kΩ
= 45.74 kΩ
= 24.91 kΩ
= 12V, V
= 5V @ 350mA Sourcing
= 5V @ 350mA Sourcing
4
Conditions
IN
SD
BOOT
BOOT
). Practical lower limit of V
= 0
= 3.3V, V
= 3.3V, V
SD
SD
IN
depends on selection of the external MOSFET.
0.232
0.408
0.677
Min
475
0.8
0.434
0.710
1000
Typ
300
600
18
50
80
76
73
60
90
3
2
3
2
0.457
0.742
Max
725
1.1
1.3
90
Units
kHz
mV
µA
%
Ω
Ω
Ω
Ω
V
V
V
V
V
V