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参数资料
| 型号： | MAX749CSA |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/12页 |
| 文件大小： | 0K |
| 描述： | IC LCD BIAS SUPPLY DGT ADJ 8SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 应用： | LCD 显示器 |
| 电流 - 电源： | 60µA |
| 电源电压： | 2 V ~ 6 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
Digitally Adjustable LCD Bias Supply
Choosing an Inductor
Practical inductor values range from 22μH to 100μH,
and 47μH is normally a good choice. Inductors with a
ferrite core or equivalent are recommended. The induc-
tor’s saturation current rating – the current at which the
100
80
V OUT = -15V
L = 47 μ H
0.2
0.25
core begins to saturate and the inductance falls to 80%
or 90% of its nominal value – should ideally equal the
current limit (see Current-Sense Resistor section).
However, because the current is limited by the
MAX749, the inductor can safely be driven into satura-
tion with only a slight impact on efficiency.
For highest efficiency, use a coil with low resistance,
preferably under 300m ? . To minimize radiated noise,
60
40
20
0
0.3
0.5
1.0
use a toroid, pot-core, or shielded inductor.
2
3
4
5
6
INPUT VOLTAGE (V)
Figure 9c. Maximum Output Current vs. Input Voltage,
V OUT = -15V
250
0.2
60
0.2
200
150
V OUT = -5V
L = 47 μ H
0.25
0.3
50
40
V OUT = -24V
L = 47 μ H
0.25
30
0.3
100
50
0.5
1.0
20
10
0.5
1.0
0
2
3
4
5
6
0
2
3
4
5
6
INPUT VOLTAGE (V)
Figure 9a. Maximum Output Current vs. Input Voltage,
V OUT = -5V
INPUT VOLTAGE (V)
Figure 9d. Maximum Output Current vs. Input Voltage,
V OUT = -24V
140
0.2
25
0.2
120
100
80
V OUT = -12V
L = 47 μ H
0.25
0.3
20
15
V OUT = -48V
L = 47 μ H
0.25
0.3
60
10
40
0.5
0.5
20
1.0
5
1.0
0
2
3
4
5
6
0
2
3
4
5
6
INPUT VOLTAGE (V)
Figure 9b. Maximum Output Current vs. Input Voltage,
V OUT = -12V
INPUT VOLTAGE (V)
Figure 9e. Maximum Output Current vs. Input Voltage,
V OUT = -48V
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX749CSA+ | 功能描述:其他电源管理 Digitally Adjustable LCD Bias Supply RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
| MAX749CSA+T | 功能描述:显示驱动器和控制器 Digitally Adjustable LCD Bias Supply RoHS:否 制造商:Panasonic Electronic Components 工作电源电压:2.7 V to 5.5 V 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Reel |
| MAX749CSA-T | 功能描述:显示驱动器和控制器 Digitally Adjustable LCD Bias Supply RoHS:否 制造商:Panasonic Electronic Components 工作电源电压:2.7 V to 5.5 V 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Reel |
| MAX749EPA | 功能描述:显示驱动器和控制器 Digitally Adjustable LCD Bias Supply RoHS:否 制造商:Panasonic Electronic Components 工作电源电压:2.7 V to 5.5 V 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Reel |
| MAX749EPA+ | 功能描述:其他电源管理 Digitally Adjustable LCD Bias Supply RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
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