AT1729 Datasheet, PDF (5/8 Pages) List of Unclassifed Manufacturers – 3-Channel PWM Controller for LCD Bias

AT1729
Preliminary
3-Channel PWM Controller for LCD Bias
Charge Current of
CS1_2(Source)
I_{CS1_2}
-1.0
mA
Charge Current of
CS3(Sink)
I_CS3
1.0
mA
Soft-Start and Duty ^{Max. Duty of CH1,2}
fOSC=500KHz
80 87 90 %
Section
Max. Duty of CH3
fOSC=500KHz
80 86 90 %
Invalid TL threshold
voltage of CS1_2
0.3
V
Invalid TL threshold
voltage of CS3
1.32.
V
Threshold Voltage of
FB1,2
V_{TLTH1 2}
1.32
V
Timer Latch Section Threshold Voltage of
(TL)
FB3
V_TLTH3
0.3
V
Start up count
Count
216
Start up time
T_TL
105 119 137 ms
Thermal Shuntdown
Section
Threshold Temperature
T_OH
140
0_C
Output Section
Rise time of OUT1,2
t_{r1_2}
C_O =1000pF between
OUT1,2-GND
20
25
35
ns
Rise time of OUT3
t_r3
C_O =1000pF between
VCC-OUT3
20
25
35
ns
Fall time of OUT1,2
t_{f1_2}
C_O =1000pF between
OUT1,2-GND
20
25
35
ns
Fall time of OUT3
t_f3
C_O =1000pF between
VCC-OUT3
20
25
35
ns
High Level on
Resistance of OUT1,2
R_{1_2AH} ^{IOUT1_2=-150mA}
2.5 4.0 5.5 Ω
Low Level on
Resistance of OUT1,2
R_{1_2AL} ^{IOUT1_2=150mA}
2.5 4.0 5.5 Ω
High Level on
Resistance of OUT3
R_3AH ^IOUT3=-150mA
2.5 4.0 5.5 Ω
Low Level on
Resistance of OUT3
R3_AL ^{IOUT1_2=150mA}
2.5 4.0 5.5 Ω
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: [phone]
WWW: http://www.aimtron.com.tw
Fax: [phone]
Email: [e-mail]
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