AT1380A Datasheet, PDF (4/12 Pages) Aimtron Technology – Switching Regulator Controller for LCD Bias

AT1380A
Preliminary Product Information
Switching Regulator Controller for LCD Bias
Electrical Characteristics
Parameter
VCC Under voltage
Lockout
(U.V.L.O.)
Reset voltage for
falling Vcc. OUT
remains off if Vcc is
below this level.
Startup voltage for
rising Vcc.
Soft start
Short circuit
detection (S.C.P.)
Sawtooth waveform
oscillator (OSC)
Error amplifier
Idle period
adjustment section
Charging current
Voltage at soft start
completion
Charging current
Threshold voltage
Oscillation frequency
Frequency input
Stability
Frequency variation
with temperature
Input threshold
Voltage
V_T input stability
V_T variation with
Temperature
Input bias current
Voltage gain
Frequency bandwidth
Maximum output
voltage range
Output source current
Output sink current
Maximum duty cycle
Output section
Output voltage
Output source current
Output sink current
Pull down resistance
Symbol
V_R
Condition
--
(V_CC=+3.0V, Ta=+25⁰C)
Values
Unit
Min. Typ. Max.
-- 1.8 1.9 V
V_TH
2.4 2.5 2.6 V
I_CS V_SCP=0V
V_ts
--
-1.5 -1.0 -0.7 μA
0.7 0.8 0.9 V
I_CPC V_SCP=0V
V_tPC
--
f_OSC R_T=3kΩ, C_T=270pF
f_∆V V_CC=2.5V to 13.5V
-1.5 -1.0 -0.7 μA
0.7 0.8 0.9 V
400 500 600 kHz
-- 2 10 %
f_∆T Ta =-30⁰C to 85⁰C
-- 5 -- %
V_T V_FB = 450mV
480 500 520 mV
V_T∆V V_CC=2V to 13.5V
V_T∆T Ta = -30⁰C to 85⁰C
-- 5 20 mV
-- 1 -- %
I_B
A_V
BW
V_OM+
V_{OM_}
I_OM+
I_{OM_}
T_DUTY
V_OH1
V_OH2
V_OL1
V_OL2
I_O+
I_O-
R_O
V_IN = 0V
--
A_V = 0 dB
--
-1.0 -0.2
70 100
-- 6
0.78 0.87
-- 0.05
V_FB = 450mV
-- -40
24 40
R_T=3.3kΩ, C_T=270pF 75 --
f_OSC = 500KHz
R_B= 390Ω, I_O= -15 mA 1.0 1.2
R_B= 750Ω, V_CC = 3.0V 0.8 1.0
I_O= -10 mA
R_B= 390Ω, I_O= -15 mA -- 0.1
R_B= 750Ω, V_CC = 3.0V -- 0.1
I_O= -10 mA
R_B= 390Ω, V_O = 0.9V -- -40
R_B= 390Ω, V_O = 0.3V 40 70
--
20 30
1.0 μA
145 V/V
-- MHz
-- V
0.2 V
-24 μA
-- μA
85 %
-- V
-- V
0.2 V
0.2 V
-30 mA
-- mA
40 ｋΩ
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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