ISL78419 Datasheet, PDF (9/20 Pages) Intersil Corporation – Integrated Automotive TFT-LCD Power Supply Regulator

ISL78419
Typical Performance Curves
92
0.00
90
f_OSC = 600kHz
88
f_OSC = 1.2MHz
86
f_OSC = 600kHz
-0.01
84
-0.02
82
f_OSC = 1.2MHz
80
-0.03
78
V_IN = 3.3V, V_OUT = 8.06V
V_IN = 3.3V, V_OUT = 8.06V
76
-0.04
0.0
50
100
150
200
250
300
350
50
100
150
200
250
I_AVDD (mA)
I_AVDD (mA)
FIGURE 1. AVDD EFFICIENCY vs I_AVDD
FIGURE 2. AVDD LOAD REGULATION vs I_AVDD
0.14
0.12
0.10
0.08
0.06
I_AVDD = 150mA
0.04
0.02
0.00
2.5
3.0
3.5
4.0
4.5
5.0
5.5
V_IN (V)
FIGURE 3. AVDD LINE REGULATION vs V_IN
L = 10µH, C_OUT = 40µF, C_COMP = 15nF, R_COMP = 5.5kΩ
FIGURE 4. BOOST CONVERTER TRANSIENT RESPONSE
VGHM
CE = 1pF, RE = 100kΩ
VGHM
CE = 100pF, RE = 100kΩ
FIGURE 5. GPM CIRCUIT WAVEFORM
9
FIGURE 6. GPM CIRCUIT WAVEFORM
FN8292.1
December 3, 2012