LM3671_08 Datasheet, PDF (6/24 Pages) National Semiconductor (TI) – 2MHz, 600mA Step-Down DC-DC Converter

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
FB, SW, EN Pin:
Continuous Power Dissipation
(Note 3)
Junction Temperature (T_J-MAX)
Storage Temperature Range
Maximum Lead Temperature
(Soldering, 10 sec.)
ESD Rating (Note 4)
Human Body Model
Machine Model
−0.2V to 6.0V
(GND−0.2V) to
(V_IN + 0.2V)
Internally Limited
+125°C
−65°C to +150°C
260°C
2 kV
200V
Thermal Properties
Junction-to-Ambient Thermal
Resistance (θ_JA) (SOT23-5) for 4
layer board (Note 6)
Junction-to-Ambient Thermal
Resistance (θ_JA) (Micro SMD) for 4
layer board (Note 6)
Junction-to-Ambient Thermal
Resistance (θ_JA) (COL) for 4 layer
board (Note 6)
130°C/W
85°C/W
165°C/W
Operating Ratings (Notes 1, 2)
Input Voltage Range (Note 10)
Recommended Load Current
Junction Temperature (T_J) Range
Ambient Temperature (T_A) Range (Note
5)
2.7V to 5.5V
0mA to 600 mA
−30°C to +125°C
−30°C to +85°C
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
PWM mode (Note 12)
-4
(Note 11)
+4
%
Feedback Voltage (ADJ) TL
-2.5
+2.5
V_REF
I_SHDN
I_Q
Line Regulation
Load Regulation
Internal Reference Voltage
Shutdown Supply Current
DC Bias Current into V_IN
2.7V ≤ V_IN ≤ 5.5V
I_O = 10 mA
100 mA ≤ I_O ≤ 600 mA
V_IN= 3.6V
EN = 0V
No load, device is not switching (FB
forced higher than programmed
output voltage)
0.031
%/V
0.0013
%/mA
0.5
V
0.01
1
µA
16
35
µA
R_{DSON (P)}
R_{DSON (N)}
I_LIM
V_IH
V_IL
I_EN
F_OSC
Pin-Pin Resistance for PFET
Pin-Pin Resistance for NFET
Switch Peak Current Limit
Logic High Input
Logic Low Input
Enable (EN) Input Current
Internal Oscillator Frequency
V_IN= V_GS= 3.6V
V_IN= V_GS= 3.6V
Open Loop (Note 7)
PWM Mode (Note 12)
380
500
mΩ
250
400
mΩ
830
1020 1150 mA
1.0
V
0.4
V
0.01
1
µA
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.
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