RT9911_11 Datasheet, PDF (13/32 Pages) Richtek Technology Corporation – 6 Channel DC/DC Converters

RT9911
CH1 Boost Output Voltage vs. V_DDM Voltage
3.30
3.29
3.28
3.27
3.26
3.25
3.24
3.23
3.22
3.21
VIN = 2.5V, VOUT = 3.3V, IOUT = 250mA
3.20
2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2 5.6
V_DDM Voltage (V)
CH1 Boost Output Voltage vs. Output Current
3.330
3.329
3.328
3.327
3.326
3.325
3.324
3.323
3.322
3.321
VIN = 2.4V, VOUT = 3.3V
3.320
0 100 200 300 400 500 600 700 800 900
Output Current (mA)
CH2 LX2 and Output Voltage Ripple
VIN = 3.3V, VOUT = 1.8V, IOUT = 300mA
CH1 Buck Output Voltage vs. Output Current
3.375
3.374
3.373
3.372
3.371
3.370
3.369
3.368
3.367
3.366
VIN = 3.7V, VOUT = 3.3V
3.365
0 100 200 300 400 500 600 700 800 900
Loading Current (mA)
CH2 Buck Efficiency vs. Output Current
100
90
80
70
VIN = 2.5V
60
= 3.0V
50
= 3.8V
= 4.5V
40
30
20
10
VOUT = 1.8V
0
10
100
Output Current (mA)
1000
CH2 LX2 and Output Voltage Ripple
VIN = 4.2V, VOUT = 2.5V, IOUT = 400mA
Time (1μs/Div)
DS9911-05 April 2011
Time (1μs/Div)
www.richtek.com
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