Datasheet

0
10
20
30
40
50
60
70
80
90
100
0.1 1 10 100 1k
I -OutputCurrent-mA
O
3.6V
4.2V
5V
Efficiency-%
0.1 1 10 100 1k
I -OutputCurrent-mA
O
0
10
20
30
40
50
60
70
80
90
100
Efficiency-%
4.2V
5V
3.6V
TPS65708
SLVSAE1A –OCTOBER 2010– REVISED FEBRUARY 2011 www.ti.com
TYPICAL CHARACTERISTICS
TABLE OF GRAPHS
FIGURE
η Efficiency DCDC (V
O
= 3.3V) vs Load current / PFM mode; Figure 1
η Efficiency DCDC (V
O
= 3.3V) vs Load current / PWM mode Figure 2
η Efficiency DCDC (V
O
= 1.2V) vs Load current / PFM mode Figure 3
η Efficiency DCDC (V
O
= 1.2V) vs Load current / PWM mode Figure 4
Line transient response DCDC (PWM) Scope plot for a 3.6V to 5V to 3.6V input voltage Figure 5
change
Line transient response DCDC (PFM) Scope plot for a 3.6V to 5V to 3.6V input voltage Figure 6
change
Line transient response LDO Scope plot for a 3.6V to 5V to 3.6V input voltage Figure 7
change
Load transient response DCDC (PFM) Scope plot for a 10% to 90% load step (40mA to Figure 8
360mA)
Load transient response DCDC (PWM) Scope plot for a 10% to 90% load step (40mA to Figure 9
360mA)
Load transient response LDO Scope plot for a 10% to 90% load step (20mA to Figure 10
180mA)
Startup timing DCDC1, DCDC2, LDO1 and LDO2 Scope plot of startup; R1 = supply voltage is Figure 11
applied
LDO POWER SUPPLY REJECTION RATIO (PSRR) Scope plot Figure 12
Figure 1. EFFICIENCY DCDC (V
O
= 3.3 V) vs LOAD Figure 2. EFFICIENCY DCDC (V
O
= 3.3 V) vs LOAD
CURRENT / PFM MODE; for V
IN
= 3.6 V to 5 V CURRENT / PWM MODE; for V
IN
= 3.6 V to 5 V
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