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LM2675M-12 Datasheet(PDF) 5 Page - Texas Instruments

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Part # LM2675M-12
Description  LM2675 SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LM2675M-12 Datasheet(HTML) 5 Page - Texas Instruments

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LM2675
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SNVS129E – MAY 2004 – REVISED JUNE 2005
All Output Voltage Versions Electrical Characteristics (continued)
Specifications with standard type face are for TJ = 25°C, and those with 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
IL
Output Leakage Current
VIN = 40V, ON/OFF Pin = 0V
1
25
μA
VSWITCH = 0V
VSWITCH = −1V, ON/OFF Pin = 0V
6
15
mA
RDS(ON)
Switch On-Resistance
ISWITCH = 1A
0.25
0.30/0.50
Ω
fO
Oscillator Frequency
Measured at Switch Pin
260
225
275
kHz
D
Maximum Duty Cycle
95
%
Minimum Duty Cycle
0
%
IBIAS
Feedback Bias
VFEEDBACK = 1.3V
85
nA
Current
ADJ Version Only
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
θJA
Thermal Resistance
P 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 software (version 6.0). 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 (SNOA401).
Copyright © 2004–2005, Texas Instruments Incorporated
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