lm2715sqx-adj National Semiconductor Corporation, lm2715sqx-adj Datasheet - Page 3

• Manufacturer Part Number: lm2715sqx-adj
• Description: Tft Panel Module
• Manufacturer: National Semiconductor Corporation

Pin Description (TSSOP)
Pin Description (LLP)
Pin Functions
Vcom+: Positive input terminal of Vcom amplifier.
Vcom−: Negative input terminal of Vcom amplifier.
Vcom: Output terminal of Vcom amplifier.
AGND: Analog ground connection for LM2715. Connect all
sensitive circuitry, ie. feedback resistors, delay capacitor,
and compensation network to its own dedicated AGND plane
which connects directly to this pin.
Delay: PMOS switch delay control pin. See Operation sec-
tion for setting the delay time.
The delay time begins when the output voltage of the DC/DC
switching regulator reaches 85% of its true output voltage.
This corresponds to a FB voltage of about 1.1V. The PMOS
DAP
Pin
Pin
10
11
12
13
14
15
16
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
9
1
2
3
4
5
6
7
8
9
Vcom+
GMA+
Vcom-
AGND
PGND
PGND
GMA+
Name
Name
Vcom
Delay
SWO
SWO
SWC
GMA
SWC
GMA
AV
AV
DAP
SWI
SWI
SW
SW
SW
SW
V
NC
NC
V
NC
NC
NC
FB
V
IN
IN
C
IN
IN
NMOS power switch input.
Main power input, step-up and switch circuitry.
PMOS switch input.
PMOS switch output.
PMOS switch control pin.
Analog power input (buffers).
Gamma buffer output.
Gamma buffer input.
Vcom Amplifier negative input.
Vcom Amplifier output.
Analog Ground. Connect to AGND plane.
PMOS switch delay.
Boost Compensation Network Connection.
Output Voltage Feedback input.
Power Ground. Connect to PGND plane.
Power Ground. Connect to PGND plane.
Not internally connected. Leave floating or connect to Ground.
Not internally connected. Leave floating or connect to Ground.
NMOS power switch input.
NMOS power switch input.
NMOS power switch input.
Main power input, step-up and switch circuitry.
PMOS switch input.
PMOS switch output.
PMOS switch control pin.
Analog power input (buffers).
Gamma buffer output.
Gamma buffer input.
Not internally connected. Leave floating or connect to Ground.
Not internally connected. Leave floating or connect to Ground.
Not internally connected. Leave floating or connect to Ground.
Vcom Amplifier positive input.
Center Die Attach Pad. Connect directly to AGND and PGND pins beneath the device.
(Continued)
3
switch is controlled with both the delay time and the switch
control pin, SWC. If no Cdelay capacitor is used, the PMOS
switch is controlled solely with the SWC pin.
V
Connect resistor/capacitor network between V
AGND for boost switching regulator AC compensation.
FB: Feedback pin. Set the output voltage by selecting values
of R1 and R2 using:
Connect the ground of the feedback network to the AGND
plane, which should be tied directly to the PGND pin.
C
: Compensation Network for Boost switching regulator.
Function
Function
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C
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