LP5912 Datasheet, PDF (8/33 Pages) Texas Instruments – LP5912 500-mA Ultra-Low-Noise LDO for RF and Analog Circuits – Requires No Bypass Capacitor

LP5912
SNVSA77B – DECEMBER 2015 – REVISED JUNE 2016
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7.7 Typical Characteristics
Unless otherwise stated: V_IN = V_OUT + 0.5 V, V_EN = V_IN, I_OUT = 1 mA, C_IN = 1 µF, C_OUT = 1 µF, T_J = 25°C, unless otherwise
stated.
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
V_EN(ON)
V_EN(OFF)
0.3
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5
Input Voltage (V)
D001
1.0
0.9
V_OUT at I_OUT = 1mA
V_PG at I_OUT = 1mA
0.8
V_OUT at I_OUT = 500 mA
0.7
V_PG at I_OUT = 500 mA
0.6
0.5
0.4
0.3
0.2
0.1
0.0
-0.1
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Input Voltage (V)
D002
Figure 1. V_EN Thresholds vs Input Voltage
2.0
1.8
V_OUT at I_OUT =1 mA
V_PG at I_OUT =1 mA
1.6
V_OUT at I_OUT = 500 mA
1.4
V_PG at I_OUT = 500 mA
1.2
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4
Input Voltage (V)
D003
Figure 2. LP5912-0.9 Output Voltage, V_PG vs Input Voltage
3.5
V_OUT at I_OUT = 1mA
3.0
V_PG at I_OUT = 1mA
V_OUT at I_OUT = 500 mA
2.5
V_PG at I_OUT = 500mA
2.0
1.5
1.0
0.5
0.0
-0.5
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Input Voltage (V)
D004
Figure 3. LP5912-1.8 Output Voltage, V_PG vs Input Voltage
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
V_IN
0.2
V_OUT
V_PG
0.0
0 50 100 150 200 250 300 350 400 450 500
Time (Ps)
D005
V_IN = 0 V to 1.6 V
I_OUT = 1 mA
Figure 4. LP5912-3.3 Output Voltage, V_PG vs Input Voltage
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
V_IN
0.2
V_OUT
V_PG
0.0
0 50 100 150 200 250 300 350 400 450 500
Time (Ps)
D006
V_IN = 0 V to 1.6 V
I_OUT = 500 mA
Figure 5. LP5912-0.9 Power Up
Figure 6. LP5912-0.9 Power Up
8
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