Datasheet

0 200 400 600 800
1000
40
50
60
70
80
90
100
EFFICIENCY (%)
OUTPUT CURRENT (mA)
V
IN
= 4.2V
V
IN
= 3.6V
OUTPUT CURRENT (mA)
EFFICIENCY (%)
100
80
60
40
20
0
0.1 1 10 100 1000
V
IN
= 3.6V
V
IN
= 4.2V
LM3691
SNVS506I –MAY 2008–REVISED MAY 2013 www.ti.com
Typical Performance Characteristics (continued)
LM3691TL Typical Application Circuit (page 1), V
IN
= 3.6V, V
OUT
= 1.8V, T
A
= 25°, L = 1.0 μH, 2520, (LQM2HP1R0), C
IN
=
C
OUT
= 4.7 μF, 0603(1608), 6.3V, (C1608X5R0J475K) unless otherwise noted.
Efficiency vs. Output Current Efficiency vs. Output Current
(V
OUT
= 2.5V, ECO Mode) (V
OUT
= 0.75V, FPWM Mode)
Figure 16. Figure 17.
Efficiency vs. Output Current Efficiency vs. Output Current
(V
OUT
= 1.8V, FPWM Mode) (V
OUT
= 2.5V, FPWM Mode)
Figure 18. Figure 19.
Load Current Threshold vs. Supply Voltage Load Current Threshold vs. Supply Voltage
(V
OUT
= 0.75V, ECO Mode to PWM Mode) (V
OUT
= 1.8V, ECO Mode to PWM Mode)
Figure 20. Figure 21.
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