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ISL97650 Datasheet(PDF) 8 Page - Renesas Technology Corp

No. de pieza ISL97650
Descripción Electrónicos  4-Channel Integrated LCD Supply
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Fabricante Electrónico  RENESAS [Renesas Technology Corp]
Página de inicio  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

ISL97650 Datasheet(HTML) 8 Page - Renesas Technology Corp

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ISL97650
FN9198 Rev.4.00
Page 8 of 20
April 17, 2009
Pin Descriptions
PIN NUMBER
PIN NAME
DESCRIPTION
1
LX1
Internal boost switch connection
2
LX2
Internal boost switch connection
3
CB
Logic buck, boost strap pin
4
LXL
Buck converter output
5, 18
NC
No connect. Connect to die pad and GND for improved thermal efficiency.
6
VSUP
Positive supply for charge pumps
7
FBL
Logic buck feedback pin
8
CM2
Buck compensation network pin
9
CTL
Input control for VON slice output
10
AGND2
Signal GND pin
11
DRN
Lower reference voltage for VON slice output
12
COM
VON slice output: when CTL = 1, COM is connected to SRC through a 5 resistor; when CTL = 0, COM
is connected to DRN through a 30
 resistor
13
POUT
Positive charge pump out
14
C1-
Charge pump capacitor 1, negative connection
15
C1+
Charge pump capacitor 1, positive connection
16
C2-
Charge pump capacitor 2, negative connection
17
C2+
Charge pump capacitor 2, positive connection
19
FBP
Positive charge pump feedback pin
20
VREF
Reference voltage
21
FBN
Negative charge pump feedback pin
22
PGND3
Power ground for VOFF, VON and VON slice
23
NOUT
Negative charge pump output
24
VINL
Logic buck supply voltage
25, 26
PGND2, 1
Boost power grounds
27
AGND1
Signal ground pin
28
VDC1
Internal supply decoupling capacitor
29
CDEL
Delay capacitor for start up sequencing, soft-start and fault detection timers
30
ENL
Buck enable for VLOGIC output
31
DELB
Open drain NFET output to drive optional AVDD delay PFET
32
CM1
Boost compensation network pin
33
VIN
Input voltage pin
34
FBB
Boost feedback pin
35
EN
Enable for boost, charge pumps and VON slice (independent of ENL)
36
VDC2
Internal supply decoupling capacitor
Exposed Die Plate
N/A
Connect exposed die plate on rear of package to ACGND and the PGND1, 2 pins. See the section on
"“Layout Recommendation” on page 19" for PCB layout thermal considerations.


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