Datasheet

0 20 40 60 80 100 120
3190
3192
3194
3196
3198
3200
3202
3204
3206
3208
3210
V
OUT
(mV)
I
OUT
(mA)
VIN = 5.0V
VIN = 3.3V
3.0 3.5 4.0 4.5 5.0 5.5 6.0
3.190
3.192
3.194
3.196
3.198
3.200
3.202
3.204
3.206
3.208
3.210
V
OUT
(V)
V
IN
(V)
IOUT = 1mA
IOUT = 100mA
1 1.00V/
BUCK1
VIN = 3.3V
1A load
200 µs/
1
1 1.00V/
BUCK1
VIN = 5V
1A load
200 µs/
1
1 10 100 1k 10k
20
30
40
50
60
70
80
90
100
EFFICIENCY (%)
I
OUT
(mA)
1 10 100 1000
20
30
40
50
60
70
80
90
100
EFFICIENCY (%)
I
OUT
(mA)
VOUT = 1.8V
VOUT = 3.0V
LM10506
www.ti.com SNVS729E –SEPTEMBER 2011–REVISED MARCH 2013
Typical Performance Characteristics
Efficiency of Buck 1: V
IN
=5.0V, V
OUT
=3.0V Efficiency of Buck 2: V
IN
=5.0V, V
OUT
=1.8V and 3.0V
Figure 2. Figure 3.
Startup of Buck 1: V
IN
=3.3V Startup of Buck 1: V
IN
=5.0V
(V
OUT
=3.0V, I
OUT
=1.0A) (V
OUT
=3.0V, I
OUT
=1.0A)
Figure 4. Figure 5.
LDO V
OUT
vs. I
OUT
LDO V
IN
vs. V
OUT
Figure 6. Figure 7.
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