ISL78302 Datasheet, PDF (6/11 Pages) Intersil Corporation – Dual LDO with Low Noise, High Performance and Low IQ

ISL78302
Typical Performance Curves
0.4
0.3
0.2
+25°C -40°C +105°C
V_O = 2.5V
I_LOAD = 0mA
0.1
0
-0.1
-0.2
-0.3
-0.42.5 _{3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5}
INPUT VOLTAGE (V)
FIGURE 2. LINE REGULATION (2.5V OUTPUT)
0.20
0.15
0.10
0.05
0
-0.05
-0.10
-0.15
-0.20
0
+25°C
-40°C
+105°C
V_IN = 3.3V
V_O = 2.5V
50 100 150 200 250 300 350 400
LOAD CURRENT - I_O (mA)
FIGURE 3. LOAD REGULATION
0.10
0.08
0.06
0.04
V_IN = 3.3V
V_O = 2.5V
0.02
0
-0.02
-0.04
-0.06
V_IN = 3.3V
V_O = 1.5V
-0.08
-0.10
-40 -25 -10 5 20 35 50 65 80 95 110
TEMPERATURE (°C)
FIGURE 4. OUTPUT VOLTAGE CHANGE vs TEMPERATURE
2.6
2.4
I_O = 0mA
V_O = 2.5V
2.2
I_O = 150mA
2.0
I_O = 300mA
1.8
V_O = 1.5V
I_O = 0mA
I_O = 150mA
1.6
I_O = 300 mA
1.4
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)
FIGURE 5. OUTPUT VOLTAGE vs INPUT VOLTAGE (2.5V and 1.5V
OUTPUT)
400
V_O = 1.5V
350
300
+25°C
+105°C
-40°C
250
200
150
100
50
0
0
50 100 150 200 250 300 350 400
OUTPUT LOAD (mA)
FIGURE 6. DROPOUT VOLTAGE vs LOAD CURRENT
6
55
54
53
52
51
50
49
48
47
46
45
2.5
+25°C
+105°C
-40°C
V_O1 = 2.5V
V_O2= 1.5V
I_O (BOTH CHANNELS) = 0µA
3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5
INPUT VOLTAGE (V)
FIGURE 7. GROUND CURRENT vs INPUT VOLTAGE
FN7696.0
January 28, 2011