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LM2672MX-12 데이터시트(PDF) 5 Page - Texas Instruments

부품명 LM2672MX-12
상세설명  LM2672 SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage
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LM2672MX-12 데이터시트(HTML) 5 Page - Texas Instruments

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LM2672
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SNVS136K – SEPTEMBER 1998 – REVISED APRIL 2013
All Output Voltage Versions (continued)
Specifications with standard type face are for TJ = 25°C, and those in bold type face apply over full Operating Temperature
Range. Unless otherwise specified, VIN = 12V for the 3.3V, 5V, and Adjustable versions and VIN = 24V for the 12V version,
and ILOAD = 100 mA.
Symbol
Parameters
Conditions
Typ
Min
Max
Units
VS/D
ON/OFF Pin
1.4
0.8
2.0
V
Voltage Thesholds
IS/D
ON/OFF Pin Current
ON/OFF Pin = 0V
20
7
37
μA
FSYNC
Synchronization Frequency
VSYNC = 3.5V, 50% duty cycle
400
kHz
VSYNC
Synchronization Threshold
1.4
V
Voltage
VSS
Soft-Start Voltage
0.63
0.53
0.73
V
ISS
Soft-Start Current
4.5
1.5
6.9
μA
θJA
Thermal Resistance
PDIP Package, Junction to Ambient(1)
95
°C/W
D Package, Junction to Ambient(1)
105
(1)
Junction to ambient thermal resistance with approximately 1 square inch of printed circuit board copper surrounding the leads. Additional
copper area will lower thermal resistance further. See Application Information section in the application note accompanying this
datasheet and the thermal model in LM267X Made Simple version 6.0 software. The value
θJ−A for the WSON (NHN) package is
specifically dependent on PCB trace area, trace material, and the number of layers and thermal vias. For improved thermal resistance
and power dissipation for the WSON package, refer to Application Note AN-1187.
Copyright © 1998–2013, Texas Instruments Incorporated
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