ISL78302A_14 Datasheet, PDF (7/11 Pages) Intersil Corporation – Dual LDO with Low Noise, Very High PSRR and Low IQ

ISL78302A
Typical Performance Curves (Continued)
350
V_O = 3.3V
300
250
+85°C +25°C
-40°C
200
150
100
50
0
0
50 100 150 200 250 300 350 400
OUTPUT LOAD (mA)
FIGURE 9. DROPOUT VOLTAGE vs LOAD CURRENT
200
180
160
140
120
100
80
60
40
20
0
0
+85°C
+25°C
-40°C
V_IN = 3.8V
V_O1 = 3.3V
V_O2 = 2.8V
50 100 150 200 250 300 350 400
LOAD CURRENT (mA)
FIGURE 11. GROUND CURRENT vs LOAD
55
50
+125°C
45
+25°C
-40°C
40
35
V_O1 = 3.3V
30
V_O2 = 2.8V
I_O (BOTH CHANNELS) = 0µA
25
3.0
3.5
4.0
4.58 5.0
5.5
6.0
6.5
INPUT VOLTAGE (V)
FIGURE 10. GROUND CURRENT vs INPUT VOLTAGE
55
50
45
40
35
30
25
-40 -25 -10
V_IN = 3.8V
V_O = 3.3V
I_LOAD = 0µA
BOTH OUTPUTS ON
5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
FIGURE 12. GROUND CURRENT vs TEMPERATURE
5
V_IN
4
V_O1
3
V_O1 = 3.3V
V_O2 = 2.8V
I_L1 = 300mA
I_L2 = 300mA
2
V_O2
1
0
0 1 2 3 4 5 6 7 8 9 10
TIME (s)
FIGURE 13. POWER-UP/POWER-DOWN
3.5
3.0
2.5
2.0
1.5
V_O1
1.0
V_O2
0.5
0
POR1
POR2
V_O1 = 3.3V
V_O2 = 2.8V
I_L1 = 300mA
I_L2 = 300mA
CPOR = 0.1µF
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
TIME (s)
FIGURE 14. POWER-UP/POWER-DOWN WITH POR SIGNALS
7
FN7932.1
December 23, 2013