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PDF AT1730 Data sheet ( Hoja de datos )
| Número de pieza | AT1730 | |
| Descripción | 2-Channel PWM Controller | |
| Fabricantes | Aimtron Technology | |
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AT1730
Preliminary Product Information
2-Channel PWM Controller for LCD Bias
Features
• Low input voltage: 2.4V to 6V
• 2-Channels PWM Control:
Nch-MOSFET driving(CH1)
Nch/Pch-MOSFET driving(CH2)
• Adjustable Soft start time and maximum duty
cycle
• Built-in timer latch for short circuit protection:
• Built-in under-voltage lockout
• High operating frequency: 100kHz to 1.0MHz
• Low operating current: 2mA (typ.)
General Description
The AT1730 is a PWM DC/DC converter control
IC with 2 channel outputs that can directly drive
power MOSFET. This IC ia suitable for very small
DC/DC converters because of their small and thin
package(1.1 mm max.), and high operation
frequency (up to 1.0MHz).
Applications
• LCD Displays Bias
• Power Supply for general equipment
Block Diagram
Aimtron reserves the right without notice to change this circuitry and specifications.
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: [email protected]
1
1 page  
AT1730
Preliminary Product Information
2-Channel PWM Controller for LCD Bias
Variation with
Temperature
Ta =-10℃ to +85℃
Threshold
Soft-Start and Duty CS1/2
Section
Threshold
CS1/2
voltage
voltage
of VCS1/2 0 Duty Cycle=0%
of VCS1/2 100 Duty Cycle=100%
Threshold Voltage of
CP
Timer Latch Section Threshold Voltage of
(TL) FB1/2
VCPTH
VFBTL
Charge Current of CP
ICP VCP =VREG -0.5V
- - 1.5 %
0.38 0.39 0.40 V
0.96 1.01 1.06 V
- 1.00 - V
- 1.22 - V
0.75 1.25 1.75 μA
Output Section
On/OFF Section
Rise time of OUT1,2
Fall time of OUT1,2
High Level on
Resistance of OUT1,2
Low Level on
Resistance of OUT1,2
tr1_2
CO =1000pF between
OUT1,2-GND
20
25
35
ns
tf1_2
CO =1000pF between
OUT1,2-GND
20
25
35
ns
R1_2AH IOUT1_2=-50mA
11.5 14 17 Ω
R1_2AL IOUT1_2=50mA
8.5 11 17 Ω
Active mode Threshold VONH
2.0 - - V
Disable mode Threshold VONL
- - 0.8 V
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: [email protected]
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet AT1730.PDF ] | |
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