AT1741 Datasheet, PDF (4/10 Pages) List of Unclassifed Manufacturers – 2-CHANNEL PWM CONTROLLER FOR CCFL BACKLIGHT

AT1741
Preliminary Product Information
2-Channel PWM Controller for CCFL Backlight
Electrical Characteristics
(unless otherwise noted, Ta=25℃, and Vcc=6V )
Parameter
Symbol
Condition
Values
Unit
Reference voltage
block
Triangular wave
oscillator
Protection circuit
Rest period
adjustment circuit
Low-voltage input
miss-operation
prevention circuit
Error amplifier
PWM comparator
Output block
Total device
Output voltage
Input stability
Load stability
Oscillation frequency
Frequency deviation
Threshold voltage
Standby voltage
Latch voltage
Source current
Comparator threshold
voltage
Input threshold voltage
（fosc=10kHz）
On duty cycle
Input bias current
Latch mode source
current
Latch input voltage
Vref
V_DL1
V_DLO
Fosc
F_DV
V_IT
V_STB
V_LT
I_SCP
V_CT
V_t0
V_t100
D_ON
I_BDT
I_DT
V_DT
Min. Typ. Max.
Iref=1mA
2.45 2.5 2.55 V
Vcc=3.6~25V
Iref=0~5mA
-- 1 10 mV
-- 1 10 mV
R_RT=10kΩ, C_CT=220pF 320 400 480 kHz
Vcc=3.6~25V
-- 1 -- %
--
No pull up
No pull up
--
1.48 1.64 1.80 V
-- 50 100 mV
-- 30 100 mV
-1.5 -2.5 -3.5 μA
Pin 5, Pin 12
0.9 1.05 1.2 V
Duty cycle=0%
Duty cycle=100%
Divide Vref using 13
kΩ and 27 kΩ
DT1, DT2=2.0V
1.79 1.97 2.15 V
1.32 1.48 1.64 V
60 70 80 %
-- -0.1 -1 μA
DT1, DT2=0V
-200 -560 -- μA
I_DT=40μA
2.28 2.48 -- V
Threshold voltage
V_UT
--
-- 2.53 -- V
Input offset voltage
Input offset current
Input bias current
Open circuit gain
Common-mode input
voltage range
Common-mode
rejection ratio
Maximum output
voltage
Minimum input voltage
Output sink current
Output source current
Input threshold voltage
（fosc=10kHz）
Saturation voltage
Leak current
Standby current
Average current
consumption
V_IO
I_IO
I_IB
AV
V_OM
CMRR
V_OH
V_OL
I_OI
I_OO
V_t0
V_t100
V_SAT
I_REAK
I_CCS
I_CCA
--
--
--
--
Vcc=3.6~25V
--
--
--
FB=1.25V
FB=1.25V
Duty cycle=0%
Duty cycle=100%
Io=75mA
Vo=25V
When output is off
R_RT=10 kΩ
-- -- 6 mV
-- -- 30 nA
-- 15 100 nA
70 85 -- dB
0.3 -- 1.6 V
60 80 -- dB
2.3 2.5 -- V
-- 0.7 0.9 V
3 20 -- mA
-45 -75 -- μA
1.79 1.97 2.15 V
1.32 1.48 1.64 V
-- 0.8 1.2 V
-- 0 5 μA
-- 1.3 1.8 mA
-- 1.6 2.3 mA
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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