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参数资料
| 型号： | LM2702MT-ADJ/NOPB |
| 厂商： | National Semiconductor |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | IC MODULE PANEL TFT DISP 16TSSOP |
| 标准包装： | 92 |
| 应用： | LCD 显示器 |
| 电流 - 电源： | 2.6mA |
| 电源电压： | 2.2 V ~ 12 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 管件 |
| 其它名称： | *LM2702MT-ADJ *LM2702MT-ADJ/NOPB LM2702MT-ADJ |
OBSOLETE
LM2702 TFT Panel Module
Check for Samples: LM2702
SNVS206D – NOVEMBER 2002 – REVISED APRIL 2013
1
FEATURES
DESCRIPTION
?
2
?
?
?
?
2A, 0.2 Ω , Internal Power Switch
V IN Operating Range: 2.2V to 12V
600kHz Switching Frequency Step-Up DC/DC
Converter
Inrush Current Limiting Circuitry
External Softstart Override
The LM2702 is a compact bias solution for TFT
displays. It has a current mode PWM step-up DC/DC
converter with a 2A, 0.2 ? internal switch. Capable of
generating 8V at 170mA from a Lithium Ion battery,
the LM2702 is ideal for generating bias voltages for
large screen LCD panels. The LM2702 operates at a
switching frequency of 600kHz allowing for easy
filtering and low noise. An external compensation pin
?
Internal 7.3 ? PMOS Switch
gives
the
user
flexibility
in
setting
frequency
?
?
?
?
?
PMOS Switch Control Pin
PMOS switch delay pin
Vcom Amplifier
Gamma Buffer
16 Pin TSSOP Package
compensation, which makes possible the use of
small, low ESR ceramic capacitors at the output. The
LM2702 uses a patented internal circuitry to limit
startup inrush current of the boost switching regulator
without the use of an external softstart capacitor. An
external softstart pin enables the user to tailor the
softstart to a specific application. The LM2702 has an
APPLICATIONS
internal controllable PMOS switch used for controlling
the row driver voltages. The switch can be controlled
?
LCD Bias Supplies
externally with a control pin and delay time. The
LM2702 contains a Vcom amplifier and a Gamma
buffer capable of supplying 50mA source and sink.
The TSSOP-16 package ensures a low profile overall
solution.
Typical Application Circuit
D 2
D 3
D 4
D 5
0.1 P F
0.1 P F
0.1 P F
4.7 P F
4.7 P F
D 7
-8V
V IN = 2.7V - 4.2V
AV IN
L = 4.7 P H
D 1
V OUT = + 8V
D 6
4.7 P F
AV IN
Gamma
Reference
GMA
V IN
SW
C IN
22 P F
Common
Backplane
GMA+
Vcom+
Vcom-
LM2702
AV IN
FB
Css
R1
160k
R2
30k
C OUT
22 P F
ceramic
Vcom
Delay
* Optional, see "Compensation" portions
SWI
V C GND SWC SWO
+24V
of the Operation section.
C COM
R * Gamma
C * Gamma
R * COM
C * C2
*
R C
24k
C C
2.2nF
V SWC
R SW
10k
OUT
D
C **
SS
C **
** Optional, see Operation section.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright ? 2002–2013, Texas Instruments Incorporated
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相关代理商/技术参数 |
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| LM2702MTX-ADJ | 制造商:NSC 制造商全称:National Semiconductor 功能描述:TFT Panel Module |
| LM2703 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Micropower Step-up DC/DC Converter with 350mA Peak Current Limit |
| LM2703EV | 功能描述:电源管理IC开发工具 LM2703 EVAL UNIT RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| LM2703EV/NOPB | 制造商:Texas Instruments 功能描述:Evaluation Board For LM2703 |
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