AT1731A
Preliminary Product Information
DC-DC Power IC for TFT Panel
Electrical Characteristics
(Vin=3.0V, SHDN=Vin, VDDP=VDDN=10V, Ta=+25℃, unless otherwise noted)
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
Current
Soft-Start
Reset switch
resistance
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
Symbol
Test Condition
Vin
V
UVLO
Vin Rising
Iin
I
SHDN
I
VDDP
I
VDDN
V
MAIN
V
FB
I
FB
f
OSC
V
FB
=V
FBP
=1.23V, V
FBN
= - 0.2V
SHDN=GND
V
FBP
=1.5V
SHDN=GND, VDDP=15V
V
FBN
= - 0.2V
SHDN=GND, VDDN=15V
Min.
2.6
2.45
―
Typ.
―
2.5
120
1
1
0.5
1
0.5
1
Max Units
5.5
V
2.55
V
―
mV
1.5
mA
10
uA
0.8
mA
10
uA
0.8
mA
10
uA
15
V
1.24
V
50
nA
1.3 MHz
90
%
%
%/V
us
0.5
20
2.5
Ω
uA
A
A
uA
Ω
-
15
uA
V
Hz
mV
nA
Ω
Ω
KΩ
mA
V
Hz
1.24
+50
10
V
nA
Ω
Ta=+25℃
V
FB
=1.23V
Ta=+25℃
0 mA<I
LX
<300 mA
2.6V < Vin < 5.5V
Vin
1.21
-50
1.1
80
1.23
―
1.2
85
0.2
0.1
317
0.25
0.1
2.2
1.87
2
100
R
LX-DS(ON
I
LX
=300mA
)
I
LX
I
LIM
Iss
R
SS
V
LX
=15V
Vin=3.3V
2.0
-
V
DDN
f
CHN
V
FBN
I
FBN
V
FBN
=0V
R
PCH-DS
(ON)
1.0
Vin
0.5 x f
OSC
-50
-50
5
2
20
50
0
+50
+50
10
4
R
NCH-DS
V
FBN
=+50mV
V
FBN
=-50mV
(ON)
V
DDP
f
CHP
V
FBP
I
FBP
V
FBP
=1.23V
R
PCH-DS(
Vin
0.5 x f
OSC
1.21
-50
5
1.23
15
7F, No.9,PARK AVENUE. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
Fax: 886-3-563-0879
WWW:
http://www.aimtron.com.tw
2/8/2006 REV:1.1
Email:
service@aimtron.com.tw
4
AIMTRON [ AIMTRON TECHNOLOGY ]
