ISL78020 Datasheet, PDF (7/19 Pages) Intersil Corporation – Automotive Grade TFT-LCD DC/DC with Integrated Amplifiers

ISL78020, ISL78022
Typical Performance Curves T_A = +25°C, unless otherwise specified.
100
90
80
70
V_IN = 5V
60
V_IN = 3V
50
40
30
20
10
0
0 200 400 600 800 1000 1200
LOAD CURRENT (mA)
94
92
90
88
86
84
V_IN = 3V
82
V_IN = 5V
80
78
0 200 400 600 800 1000 1200
LOAD CURRENT (mA)
FIGURE 1. BOOST EFFICIENCY AT V_OUT = 12V (PI-MODE)
FIGURE 2. BOOST EFFICIENCY AT V_OUT = 12V (P-MODE)
0
V_IN = 3V
-0.1
-0.2
-0.3
-0.4
V_IN = 5V
-0.5
-0.6
0
200 400 600 800 1000 1200
LOAD CURRENT (mA)
FIGURE 3. BOOST LOAD REGULATION vs LOAD CURRENT
(PI-MODE)
0
-2
-4
V_IN = 5.0V
-6
-8
V_IN = 3.3V
-10
-12
-14
0
200 400 600 800 1000 1200
LOAD CURRENT (mA)
FIGURE 4. BOOST LOAD REGULATION vs LOAD CURRENT
(P-MODE)
0.12
0.10
0.08
0.06
0.04
0.02
0
3.0 3.5 4.0 4.5 5.0 5.5 6.0
INPUT VOLTAGE (V)
FIGURE 5. BOOST LINE REGULATION vs INPUT VOLTAGE
(PI-MODE)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
3.0 3.5 4.0 4.5 5.0 5.5 6.0
INPUT VOLTAGE (V)
FIGURE 6. BOOST LINE REGULATION vs INPUT VOLTAGE
(P-MODE)
7
FN6386.2
December 6, 2007