Datasheet

10
-3
10
-2
10
-1
10
0
10
1
10
2
10
3
10
4
OUTPUT CURRENT (mA)
0
10
20
30
40
50
60
70
80
90
100
EFFICIENCY (%)
V
IN
= 5.5V
V
IN
= 3.6V
V
IN
= 2.8V
10
-2
10
-1
10
0
10
1
10
2
10
3
10
4
OUTPUT CURRENT (mA)
0
10
20
30
40
50
60
70
80
90
100
EFFICIENCY (%)
V
IN
= 2.8V
V
IN
= 3.6V
V
IN
= 5.5V
SUPPLY VOLTAGE (V)
OUTPUT VOLTAGE
(V)
1.835
1.830
1.825
1.820
1.815
1.810
1.805
1.800
2.5 3.0 3.5 4.0 4.5 5.0 5.5
I
OUT
= 20 mA
I
OUT
= 750 mA
I
OUT
= 1.5 A
SUPPLY VOLTAGE (V)
OUTPUT VOLTAGE
(V)
3.550
3.540
3.530
3.520
3.510
3.500
3.490
4.0 4.5 5.0 5.5
I
OUT
= 20 mA
I
OUT
= 750 mA
I
OUT
= 1.5A
TEMPERATURE (°C)
SHUTDOWN CURRENT (éA)
0.15
0.12
0.09
0.06
0.03
0.00
-40 -20 0 20 40 60 80
VIN = 2.7V
VIN = 3.6V
VIN = 5.5V
SUPPLY VOLTAGE (V)
OUTPUT VOLTAGE (V)
1.040
1.035
1.030
1.025
1.020
1.015
1.010
1.005
1.000
0.995
0.990
2.5 3.0 3.5 4.0 4.5 5.0 5.5
I
OUT
= 20 mA
I
OUT
= 750 mA
I
OUT
= 1.5A
LP3906
SNVS456M –AUGUST 2006–REVISED MAY 2013 www.ti.com
TYPICAL PERFORMANCE CHARACTERISTICS — BUCK
T
A
= 25°C unless otherwise noted
Output Voltage
Shutdown Current vs.
vs. Supply Voltage
Temp (Vout = 1.0 V)
Figure 12. Figure 13.
Output Voltage Output Voltage
vs. vs.
Supply Voltage Supply Voltage
(Vout = 1.8V) (Vout = 3.5V)
Figure 14. Figure 15.
Buck 1 Efficiency Buck 1 Efficiency
vs vs
Output Current Output Current
(Forced PWM Mode, Vout =1.2V, L= 2.2µH) (Forced PWM Mode, Vout =2.0V, L= 2.2µH)
Figure 16. Figure 17.
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