at1736 Aimtron Technology, at1736 Datasheet - Page 3

• Manufacturer Part Number: at1736
• Description: Lcd Panel Power Supplies With High-current Operational Amplifiers
• Manufacturer: Aimtron Technology

Pin Descriptions
7F, No.9,PARK AVENUE. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: [phone]
10/19/2007 REV:0.5
Pin No.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
3
4
5
6
7
8
9
Pin Name
OUTOP1
NEGOP1
OUTOP2
NEGOP2
OUTOP3
NEGOP4
OUTOP4
NEGOP5
OUTOP5
POSOP1
POSOP2
POSOP3
POSOP4
POSOP5
VDDOP
SWCTL
VPSRC
AGND
PGND
BGND
COMP
DRVN
DRVP
DRN
FBN
DLP
REF
FBP
LX
FB
IN
Fax: [phone]
Operational Amplifier 1 Noninverting Input.
IC Supply Voltage Input.
Gate-on Pulse Modulator Voltage Supply Input. Source of the internal
high-voltage P-channel MOSFET connected to GON. Connect a
minimum 0.1µF capacitor close to the VPSRC and PGND pins.
Reference Output. Connect a 0.22µF capacitor from REF to GND. REF
remains on in shutdown.
Analog Ground for the Signal Control of the Regulators.
Power Ground. PGND is the source of the n-channel power MOSFET of
step-up converter. Place the input-capacitor ground terminals close to
PGND with a wide trace.
Operational Amplifier 1 Output.
Operational Amplifier 1 inverting Input.
Operational Amplifier 2 Output.
Operational Amplifier 2 inverting Input.
Operational Amplifier 2 Noninverting Input.
Analog Ground for Operational Amplifiers.
Operational Amplifier 3 Noninverting Input.
Operational Amplifier 3 Output.
Operational Amplifier Power Supply Input. Connect a 0.1µF capacitor
from VDDOP to BGND.
Operational Amplifier 4 Noninverting Input.
Operational Amplifier 4 inverting Input.
Operational Amplifier 4 Output
Operational Amplifier 5 Noninverting Input.
Operational Amplifier 5 inverting Input.
Operational Amplifier 5 Output.
Drain of Internal N-Channel Power MOSFET of Step-up Converter.
Minimize the connecting trace area for the lowest EMI.
Step-Up Converter Feedback Input. Connect a resistive voltage-divider
to determine the step-up converter output voltage. Place the resistive
voltage-divider close to this pin.
Compensation pin of Error-Amplifier of the Step-Up Converter.
Connect a compensation network from COMP to AGND.
Positive Gate-On Linear Regulator Feedback Input. Connect a resistive
voltage-divider to determine the gate-on linear regulator output voltage.
Place the resistive voltage-divider close to this pin.
Transistor Base Driver of Positive Gate-On Linear-Regulator. Open
drain of an internal n-channel MOSFET. Connect DRVP to the base of
an external pnp transistor.
Negative Gate-Off Linear-Regulator Feedback Input. Connect a
resistive voltage-divider to determine the gate-off linear regulator output
voltage. Place the resistive voltage-divider close to this pin.
Transistor Base Driver of Negative Gate-off Linear Regulator. Open
drain of an internal p-channel MOSFET. Connect DRVN to the base of
an external npn transistor.
Positive Gate-on Pulse Modulator Delay Input. Connect a capacitor
from DLP to GND to set the delay time.
Gate-on Pulse Modulator Timing Control Input.
Discharge Switch Input. Connect a resistor to GND to discharge the
V
GON
when SWCTL is low.
3
High-Current Operational Amplifiers
Preliminary Product Information
LCD Panel Power Supplies with
Function
WWW:
Email:
http://www.aimtron.com.tw
[e-mail]
AT1736