ISL97650 Intersil Corporation, ISL97650 Datasheet - Page 8

• Manufacturer Part Number: ISL97650
• Description: 4-Channel Integrated LCD Supply
• Manufacturer: Intersil Corporation

Pin Descriptions
Exposed Die Plate
PIN NUMBER
25, 26
5, 18
10
12
13
14
15
16
17
19
20
21
22
23
24
27
28
29
30
31
32
33
34
35
36
11
1
2
3
4
6
7
8
9
PIN NAME
PGND2, 1
AGND2
PGND3
AGND1
NOUT
VSUP
POUT
VREF
VDC1
CDEL
VDC2
DELB
COM
VINL
CM2
DRN
CM1
FBP
FBN
ENL
FBB
LX1
LX2
LXL
FBL
CTL
C1+
C2+
C1-
C2-
VIN
N/A
CB
NC
EN
8
Internal boost switch connection
Internal boost switch connection
Logic buck, boost strap pin
Buck converter output
No connect. Connect to die pad and GND for improved thermal efficiency.
Positive supply for charge pumps
Logic buck feedback pin
Buck compensation network pin
Input control for V
Signal GND pin
Lower reference voltage for V
V
is connected to DRN through a 30Ω resistor
Positive charge pump out
Charge pump capacitor 1, negative connection
Charge pump capacitor 1, positive connection
Charge pump capacitor 2, negative connection
Charge pump capacitor 2, positive connection
Positive charge pump feedback pin
Reference voltage
Negative charge pump feedback pin
Power ground for V
Negative charge pump output
Logic buck supply voltage
Boost power grounds
Signal ground pin
Internal supply decoupling capacitor
Delay capacitor for start up sequencing, soft-start and fault detection timers
Buck enable for V
Open drain NFET output to drive optional A
Boost compensation network pin
Input voltage pin
Boost feedback pin
Enable for boost, charge pumps and V
Internal supply decoupling capacitor
Connect exposed die plate on rear of package to ACGND and the PGND1, 2 pins. See the section on
"Layout Recommendations" for PCB layout thermal considerations.
ON
slice output: when CTL = 1, COM is connected to SRC through a 5Ω resistor; when CTL = 0, COM
ON
LOGIC
OFF
slice output
ISL97650
, V
output
ON
ON
and V
slice output
ON
ON
slice
slice (independent of ENL)
DESCRIPTION
VDD
delay PFET
November 28, 2006
FN9198.3