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LM3671TLX-1.8 Fiches technique(PDF) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No de pièce LM3671TLX-1.8
Description  2MHz, 600mA Step-Down DC-DC Converter
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
Logo NSC - National Semiconductor (TI)

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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
IN Pin: Voltage to GND
−0.2V to 6.0V
FB, SW, EN Pin:
(GND−0.2V) to
(V
IN + 0.2V)
Continuous Power Dissipation
(Note 3)
Internally Limited
Junction Temperature (T
J-MAX)
+125°C
Storage Temperature Range
−65°C to +150°C
Maximum Lead Temperature
(Soldering, 10 sec.)
260°C
ESD Rating (Note 4)
Human Body Model
2 kV
Machine Model
200V
Operating Ratings (Notes 1, 2)
Input Voltage Range (Note 10)
2.7V to 5.5V
Recommended Load Current
0mA to 600 mA
Junction Temperature (T
J) Range
−30°C to +125°C
Ambient Temperature (T
A) Range (Note
5)
−30°C to +85°C
Thermal Properties
Junction-to-Ambient Thermal
Resistance (
θ
JA) (SOT23-5) for 4
layer board (Note 6)
130°C/W
Junction-to-Ambient Thermal
Resistance (
θ
JA) (Micro SMD) for 4
layer board (Note 6)
85°C/W
Junction-to-Ambient Thermal
Resistance (
θ
JA) (COL) for 4 layer
board (Note 6)
165°C/W
Electrical Characteristics (Notes 2, 8, 9) Limits in standard typeface are for T
J = 25°C. Limits in boldface type
apply over the full operating ambient temperature range (−30°C
T
A +85°C). Unless otherwise noted, specifications apply to
the LM3671MF/TL/LC with V
IN = EN = 3.6V
Symbol
Parameter
Condition
Min
Typ
Max
Units
V
IN
Input Voltage
(Note 10)
2.7
5.5
V
V
FB
Feedback Voltage (Fixed) MF
PWM mode (Note 12)
-4
+4
%
Feedback Voltage (Fixed) TL
-2.5
+2.5
Feedback Voltage (Fixed) LC
-4
+4
Feedback Voltage (ADJ) MF
(Note 11)
PWM mode (Note 12)
-4
+4
%
Feedback Voltage (ADJ) TL
-2.5
+2.5
Line Regulation
2.7V
V
IN 5.5V
I
O = 10 mA
0.031
%/V
Load Regulation
100 mA
I
O 600 mA
V
IN= 3.6V
0.0013
%/mA
V
REF
Internal Reference Voltage
0.5
V
I
SHDN
Shutdown Supply Current
EN = 0V
0.01
1
µA
I
Q
DC Bias Current into V
IN
No load, device is not switching (FB
forced higher than programmed
output voltage)
16
35
µA
R
DSON (P)
Pin-Pin Resistance for PFET
V
IN= VGS= 3.6V
380
500
m
R
DSON (N)
Pin-Pin Resistance for NFET
V
IN= VGS= 3.6V
250
400
m
I
LIM
Switch Peak Current Limit
Open Loop (Note 7)
830
1020
1150
mA
V
IH
Logic High Input
1.0
V
V
IL
Logic Low Input
0.4
V
I
EN
Enable (EN) Input Current
0.01
1
µA
F
OSC
Internal Oscillator Frequency
PWM Mode (Note 12)
1.6
2
2.6
MHz
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of
the device is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see
the Electrical Characteristics tables.
www.national.com
6


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