BQ25570_14 Datasheet, PDF (19/41 Pages) Texas Instruments – Ultra Low Power Harvester Power Management IC with Boost Charger, and Nano-Powered Buck Converter

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45
40
35
30
25
20
VOUT = 1.8V
15
10
5
0
0
VSTOR = 2.1V
VSTOR = 3V
VSTOR = 4.2V
VSTOR = 5.5V
10 20 30 40 50 60 70 80 90 100
Output Current (mA)
Figure 25. Buck Output Voltage Ripple vs Output Current
bq25570
SLUSBH2C – MARCH 2013 – REVISED JANUARY 2014
45
40 ^{VOUT = 1.8V}
35
30
25
20
15
10
IOUT = 0.5mA
IOUT = 5mA
5
IOUT = 50mA
0
IOUT = 100mA
2.1 2.6 3.1 3.6 4.1 4.6 5.1
VSTOR Voltage (V)
Figure 26. Buck Output Voltage Ripple vs Input Voltage
Figure 27. Startup by taking EN low (from Ship mode)
Figure 28. Startup by taking EN low (from Ship mode),
including VOUT
Figure 29. Startup by taking VOUT_EN high (from Standby
mode)
Figure 30. MPPT Operation
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