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参数资料
| 型号： | MAX749ESA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/12页 |
| 文件大小： | 0K |
| 描述： | IC SUPPLY LCD BIAS ADJ 8-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | LCD 显示器 |
| 电流 - 电源： | 60µA |
| 电源电压： | 2 V ~ 6 V |
| 工作温度： | -40°C ~ 85°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： | 带卷 (TR) |
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 |
|---|---|
| MAX749ESA-TG074 | 制造商:Maxim Integrated Products 功能描述:DIGITALLY ADJUSTABLE LCD BIAS SUPPLY - Rail/Tube |
| MAX749EVKIT-SO | 功能描述:显示开发工具 RoHS:否 制造商:4D Systems 产品:4Display Shields 工具用于评估:?OLED-160-G1, ?OLED-160-G2 接口类型:Serial 工作电源电压:5 V |
| MAX-750 | 制造商:SLPOWER 制造商全称:SL Power Electronics 功能描述:MAX-750 Multiple Output |
| MAX7500EVKIT+ | 功能描述:板上安装温度传感器 MAX7500 Eval Kit RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| MAX7500MSA | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
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