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| LP3907_14 Datasheet, PDF (18/57 Pages) Texas Instruments – Dual High-Current Step-Down DC/DC and Dual Linear Regulator with I2C-Compatible Interface | |||
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LP3907
SNVS511N â JUNE 2007 â REVISED AUGUST 2011
www.ti.com
Typical Performance Characteristics â Buck2
VIN= 4.5V to 5.5V, TA = 25°C, VOUT = 1.8V, 3.3V
Efficiency
Efficiency
vs
vs
Output Current
Output Current
( VOUT =1.8V, L= 2.2µH âForced PWM mode)
(VOUT =3.3V, L= 2.2µH â Forced PWM mode)
100
90
80
70
VIN = 4.5V
60
50
40
30
VIN = 5.5V
20
10
100
90
VIN = 4.5V
80
70
60
50
40
VIN = 5.5V
30
20
10
0.1
1
10
100
1000
OUTPUT CURRENT (mA)
0.1
1
10
100
OUTPUT CURRENT (mA)
1000
18
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