at1731a Aimtron Technology, at1731a Datasheet - Page 4

• Manufacturer Part Number: at1731a
• Description: Dc-dc Power Ic For Tft Panel
• Manufacturer: Aimtron Technology

Electrical Characteristics
Parameter
Input operating voltage
Input under-voltage threshold
Vin UVLO hysteresis
Vin Quiescent Current
Vin Shutdown Current
VDDP Quiescent Current
VDDP Shutdown Current
VDDN Quiescent Current
VDDN Shutdown Current
Main Step-Up Converter
Main Output Voltage Range
Feedback Regulation voltage
FB Input Bias Current
Operating Frequency
Oscillator Maximum Duty Cycle
Load Regulation
Line Regulation
Trans-conductance
LX Switch On-Resistance
LX Leakage Current
LX Current Limit
Maximum RMS LX Current
Soft-Start
Short- circuit Capacitor charge
current
Negative Charge-Pump
VDDN Input Supply Range
Operating Frequency
FBN Feedback Regulation
Voltage
FBN Input Bias Current
P-ch On-Resistance
N-ch On-Resistance
Maximum RMS SWN Current
Positive Charge-Pump
VDDP Input Supply Range
Operating Frequency
FBP Feedback Regulation
Voltage
FBP Input Bias Current
P-ch On-Resistance
7F, No.9,PARK AVENUE. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: [phone]
2/8/2006 REV:1.1
Current
Reset switch
resistance
Fax: [phone]
(Vin=3.0V, SHDN=Vin, VDDP=VDDN=10V, Ta=+25℃, unless otherwise noted)
V
I
V
Symbol
Vin
V
Iin
I
I
I
V
f
R
)
I
I
Iss
R
f
V
I
R
(ON)
R
(ON)
V
f
V
I
R
SHDN
VDDP
VDDN
FB
OSC
LX
LIM
CHN
FBN
CHP
FBP
UVLO
MAIN
FB
DDN
FBN
DDP
FBP
LX-DS(ON
SS
PCH-DS
NCH-DS
PCH-DS(
Vin Rising
V
SHDN=GND
V
SHDN=GND, VDDP=15V
V
SHDN=GND, VDDN=15V
Ta=+25℃
V
Ta=+25℃
0 mA<I
2.6V < Vin < 5.5V
I
V
Vin=3.3V
V
V
V
V
LX
FB
FBP
FBN
FB
LX
FBN
FBN
FBN
FBP
=300mA
=15V
=V
=1.23V
=1.5V
= - 0.2V
=0V
=+50mV
=-50mV
=1.23V
FBP
LX
Test Condition
<300 mA
=1.23V, V
4
DC-DC Power IC for TFT Panel
Preliminary Product Information
FBN
= - 0.2V
WWW:
Email:
http://www.aimtron.com.tw
[e-mail]
Min. Typ. Max Units
2.45
1.21 1.23 1.24
1.21 1.23 1.24
-50
-50
-50
2.6
Vin
1.1
2.0
Vin
Vin
-50
0.5 x f
80
20
―
-
0.5 x f
0.25
1.87
120
317
100
OSC
2.5
0.5
0.5
1.2
0.2
0.1
0.1
2.2
1.0
85
50
―
―
1
1
1
1
2
0
5
2
5
AT1731A
OSC
2.55
+50
+50
+50
5.5
1.5
0.8
0.8
1.3
0.5
2.5
10
10
10
15
50
90
20
15
10
15
10
―
4
-
Hz
MHz
%/V
KΩ
mV
mA
mA
mA
mV
mA
uA
uA
uA
nA
uA
uA
uA
Hz
nA
nA
us
Ω
Ω
Ω
Ω
Ω
%
%
V
V
V
V
A
A
V
V
V