at1743 Aimtron Technology, at1743 Datasheet

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at1743

Manufacturer Part Number
at1743
Description
2-channel Pwm Controller For Lcd Display
Manufacturer
Aimtron Technology
Datasheet
Features
• High-accuracy reference voltage circuit (±1%).
• Built-in short-circuit protection circuit.
• Built-in Undervoltage Lockout protection.
• Internal 2.5V Reference supply.
• Variable Dead time provides control over total
Applications
• LCD Display
• Portable equipment
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
Fax: 886-3-563-0879
Block Diagram
Aimtron reserves the right without notice to change this circuitry and specifications.
Range.
2-Channel PWM Controller for LCD Display
1
General Description
The AT1743 is 2-channel PWM switching
regulator controllers that contains an on-chip 2.5V
reference, two error amplifier, an adjustable
oscillator, two dead-time comparators, under-
voltage lockout circuitry and 2 common-emitter
output. It is idea for step-up, step-down, and
inverting converter.
Preliminary Product Information
WWW:
Email:
http://www.aimtron.com.tw
service@aimtron.com.tw
AT1743

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at1743 Summary of contents

Page 1

... Tel: 886-3-563-0878 Fax: 886-3-563-0879 Preliminary Product Information 2-Channel PWM Controller for LCD Display General Description The AT1743 is 2-channel PWM switching regulator controllers that contains an on-chip 2.5V reference, two error amplifier, an adjustable oscillator, two dead-time comparators, under- voltage lockout circuitry and 2 common-emitter output ...

Page 2

... Reference voltage output(2.5V) 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 Preliminary Product Information 2-Channel PWM Controller for LCD Display Marking AT1743P AT1743P, date code with one bottom line Description WWW: http://www.aimtron.com.tw Email: 2 AT1743 service@aimtron.com.tw ...

Page 3

... Tstg -55~+125 Io Vo Symbol Min. Typ. V 3 100 -- OSC WWW: http://www.aimtron.com.tw Email: 3 AT1743 0 (Ta=+25 C) Limits Unit 450* mW ℃ ℃ 2 120 (Ta=+25 C) Values Unit Max. 25 V 100 1.6 V 15000 pF 50 kΩ 800 kHz service@aimtron.com.tw ...

Page 4

... OL I FB=1.25V OI FB=1.25V Duty cycle=0% t0 Duty cycle=100% V t100 V Io=75mA SAT Vo=25V I REAK I When output is off CCS I R =10 kΩ CCA RT WWW: http://www.aimtron.com.tw Email: 4 AT1743 Values Unit Min. Typ. Max. 2.48 2.5 2. 320 400 480 kHz -- 1.48 1.64 1. 100 mV -- ...

Page 5

... Timing Curve 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 Preliminary Product Information 2-Channel PWM Controller for LCD Display WWW: http://www.aimtron.com.tw Email: 5 AT1743 service@aimtron.com.tw ...

Page 6

... No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 Preliminary Product Information 2-Channel PWM Controller for LCD Display WWW: http://www.aimtron.com.tw Email: 6 AT1743 service@aimtron.com.tw ...

Page 7

... Application Circuit: Step-Down converter 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 Preliminary Product Information 2-Channel PWM Controller for LCD Display WWW: http://www.aimtron.com.tw Email: 7 AT1743 service@aimtron.com.tw ...

Page 8

... No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 Preliminary Product Information 2-Channel PWM Controller for LCD Display WWW: http://www.aimtron.com.tw Email: 8 AT1743 service@aimtron.com.tw ...

Page 9

... AT1743 INCHES TYP MAX 0.043 0.047 0.004 0.006 0.039 0.041 0.010 0.011 0.005 - 0.1998 0.200 0.252 0.260 0.173 0.177 0.024 0.028 0.026 - - 0.003 8° WWW: http://www.aimtron.com.tw Email: service@aimtron.com.tw ...

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