Datasheet

4.03 Ps
4.03 Ps
4.0 Ps
0 200 400 600 800 1000 1200
LOAD CURRENT (mA)
0
50
100
150
200
250
300
DROPOUT VOLTAGE (mV)
REG1 3.3V OUTPUT
0 200 400 600 800 1000 1200
LOAD CURRENT (mA)
-100
-50
0
50
100
150
200
CHANGE IN OUTPUT VOLTAGE (mV)
REG1 3.3V OUTPUT
V
IN
= 3.6V
REG2 2.5V OUTPUT
REG3 1.3V OUTPUT
LP3972
SNVS468K –SEPTEMBER 2006–REVISED MAY 2013 www.ti.com
LDO Dropout Voltage vs. Load Current Collect Data For All LDOs
Dropout Voltage vs. Change in Output Voltage
Load Current vs. Load Current
Figure 3. Figure 4.
LDO1 Line Regulation LDO1 Load Transient
V
OUT
= 1.8 volts V
IN
3 to 4 volts Load = 100 mA V
IN
= 4.1 volts V
OUT
= 1.8 volts no-load-100 mA
Figure 5. Figure 6.
Enable Start-up time (LDO1)
LDO1 Channel 2 LDO4 Channel 1 Sys_enable from 0 volts Load = 100 mA
Figure 7.
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