el7641 Intersil Corporation, el7641 Datasheet - Page 8

• Manufacturer Part Number: el7641
• Description: Tft-lcd Dc/dc With Integrated Amplifiers
• Manufacturer: Intersil Corporation

Typical Performance Curves
FIGURE 7. BOOST PULSE LOAD TRANSIENT RESPONSE
BOOST OUTPUT
BOOST OUTPUT
(AC COUPLING)
CURRENT
VOLTAGE
-0.02
-0.04
-0.06
-0.08
-0.12
-0.1
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
0
0
FIGURE 11. V
-15
20
FIGURE 9. V
V
I
LOAD
OFF
21
=-8V
-14
=50mA
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
22
ON
OFF
-13
LINE REGULATION
LINE REGULATION
8
23
-12
24
V
I
LOAD
ON
(Continued)
=20V
-11
V
C
BOOST
OUT
=20mA
25
=30µF
EL7640, EL7641, EL7642
=12V
-10
26
V
BOOST
V
V
CDLY
V
OFF
ON
-0.05
-0.15
-0.25
-0.1
-0.2
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
FIGURE 10. V
FIGURE 8. V
FIGURE 12. START-UP SEQUENCE
0
0
5
5
10
10
V
ON
LOAD CURRENT (mA)
ON
OFF
TIME (20ms/DIV)
LOAD CURRENT (mA)
LOAD REGULATION
15
15
LOAD REGULATION
C
20
20
DEL
=220nF
V
V
ON
OFF
25
25
=20V
=-8V
February 22, 2006
30
30
FN7415.2