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TPS65170 Datasheet(PDF) 5 Page - Texas Instruments

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Part # TPS65170
Description  LCD Bias Supply
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS65170 Datasheet(HTML) 5 Page - Texas Instruments

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TPS65170
www.ti.com
SLVSA27 – OCTOBER 2009
PIN FUNCTIONS
PIN
I/O
DESCRIPTION
NAME
NO.
VL
1
O
Connection for decoupling capacitor for internal bias supply.
SWB
2, 3
O
Buck converter switch node
CTRLN
4
O
Base drive signal for the positive charge pump external regulating transistor.
FBN
5
I
Feedback pin for the negative charge pump. Connect this pin to the center of a resistor divider
connected between the negative charge pump output and buck converter output.
FBB
6
I
Buck converter feedback. Connect this pin to the output of the buck converter.
/RST
7
O
Reset generator open drain output
AGND
8
P
Analog ground
NC
9, 10, 11,
N/A
Not used, connect to AGND.
12, 13
AGND
14
P
Analog ground.
DLY
15
I
Positive charge pump and boost converter delay capacitor connection.
CRST
16
I
Reset generator timing capacitor connection.
SS
17
I
Soft-start timing capacitor connection.
COMP
18
I
Boost converter compensation network connection.
FB
19
I
Boost regulator feedback. Connect this pin to the center of a resistor divider connected between the
boost converter output and AGND.
FBP
20
I
Feedback pin for the positive charge pump. Connect this pin to the center of a resistor divider
connected between the positive charge pump output and AGND.
CTRLP
21
O
Base drive signal for the positive charge pump external regulating transistor
GD
22
O
Gate drive signal for the external MOSFET isolation switch.
SW
23, 24
O
Boost converter switching node
PGND
25, 26
P
Power ground
VIN
27, 28
P
Supply voltage connection
Exposed
P
Connect to the system GND
Thermal Die
Copyright © 2009, Texas Instruments Incorporated
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