Datasheet

V
OUT
(50 mV/Div)
I
LOAD
= 280 mA
TIME (100 Ps/DIV)
CURRENT LOAD STEP (3 mA - 280 mA)
I
LOAD
= 3 mA
V
OUT
(50 mV/Div)
I
LOAD
= 70 mA
TIME (100 Ps/DIV)
CURRENT LOAD STEP (0 mA - 70 mA)
I
LOAD
= 0 mA
Inductor Current = 200 mA/Div
V
IN
= 3.6V
V
IN
= 4.6V
TIME (100 ms/DIV)
LINE T
RANSIENT
V
OUT
= 1.8V
(20 mV/Div)
V
OUT
= 1.8V
I
OUT
= 100 mA
V
IN
rise time = 10 ms
V
IN
= 3.6V
TIME (200 ms/DIV)
LINE T
RANSIENT
V
IN
= 2.6V
(20 mV/Div)
2.5 3 3.5 4 4.5 5 5.5
V
IN
(V)
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
R
DSon
- N, P CHANNEL (:)
N FET
P FET
TA = 85°C
TA = 25°C
TA = -40°C
-40 -20
-10
0 10 20 30 40 50 60 70 80
TEMPERATURE (°C)
840
850
860
870
880
890
900
910
920
930
940
950
960
970
980
990
1000
1010
FREQUENCY (kHz)
-30
I
LOAD
= 150 mA
V
IN
= 2.5V
V
IN
= 5.5V
V
IN
= 3.6V
LM3670
SNVS250E –NOVEMBER 2004–REVISED FEBRUARY 2013 www.ti.com
Typical Performance Characteristics (continued)
(unless otherwise stated: V
IN
= 3.6V, V
OUT
= 1.8V)
R
DSON
vs. V
IN
Frequency vs. Temperature P & N Channel
Figure 11. Figure 12.
Line Transient Line Transient
(V
IN
= 2.6V to 3.6V, I
LOAD
= 100 mA) (V
IN
= 3.6V to 4.6V , I
LOAD
= 100 mA)
Figure 13. Figure 14.
Load Transient Load Transient
I
LOAD
= 3mA to 280mA I
LOAD
= 0mA to 70mA
Figure 15. Figure 16.
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