参数资料
| 型号： | EL5225IRZ |
| 厂商： | Intersil |
| 文件页数： | 9/12页 |
| 文件大小： | 0K |
| 描述： | IC VOLT GEN 10CH TFT-LCD 24TSSOP |
| 标准包装： | 62 |
| 应用： | 转换器，TFT，LCD |
| 输入电压： | 5 V ~ 16.5 V |
| 输出数： | 10 |
| 输出电压： | 0.5 V ~ 14.95 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 24-TSSOP |
| 包装： | 管件 |
EL5225
P DMAX = ---------------------------------------------
will repeat every 10-clock cycles for each channel. The time
takes to update the output depends on the timing at the V IN
and the state of the switches. It can take 1 to 10 clock cycles
to update each output.
For the sample and hold capacitor CH to maintain the
correct output voltage, the driving load shouldn’t be changed
at the rising edge of the OSC signal. Since at the rising edge
of the OSC clock, the refreshed switches are being opened,
if the load changes at that time, it will generate an error
output voltage. For a fixed load condition, the internal
oscillator can be used.
For the transient load condition, the external OSC mode
should be used to avoid the conflict between the rising edge
of the OSC signal and the changing load. So a timing delay
circuit will be needed to delay the OSC signal and avoid the
rising edge of the OSC signal and changing the load at the
same time.
TRANSIENT LOAD RESPONSE
I OUT
OSC
V OUT
FIGURE 12.
Channel 3 --- sinking and sourcing 5mA current
Channel 2 --- EXT_OSC signal
Channel 1 --- V OUT
Here, the OSC signal is synchronized to the load signal. The
rising edge of the OSC signal is then delayed by some
amount of time and gives enough time for CH to be charged
to a new voltage before the switches are opened.
CHANNEL TO CHANNEL REFRESH
V OUT1
OSC
V OUT2
FIGURE 13.
Ch1---Output1
Ch3---Output2
Ch2---EXT_OSC
At the falling edge of the OSC, output 1 is refreshing and one
clock cycle later, output2 is being refreshed. The spike you
see here is the response of the output amplifier when the
refreshed switches are closed. When driving a big capacitor
load, there will be ringing at the spikes because the phase
margin of the amplifier is decreased.
The speed of the external OSC signal shouldn’t be greater
than 70kHz because for the worst condition, it will take at
least 4μs to charge the sample and hold Capacitor CH. The
pulse width has to be at least 4μs long. From our lab test, the
duty cycle of the OSC signal must be greater than 30%.
POWER DISSIPATION
With the 30mA maximum continues output drive capability
for each channel, it is possible to exceed the 125°C absolute
maximum junction temperature. Therefore, it is important to
calculate the maximum junction temperature for the
application to determine if load conditions need to be
modified for the part to remain in the safe operation.
The maximum power dissipation allowed in a package is
determined according to:
T JMAX - T AMAX
Θ JA
where:
? T JMAX = Maximum junction temperature
? T AMAX = Maximum ambient temperature
? θ JA = Thermal resistance of the package
? P DMAX = Maximum power dissipation in the package
9
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相关代理商/技术参数 |
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| EL5225IRZ-T13 | 功能描述:LCD Gamma缓冲器 EL5225IRZ 10- CH TFT -LCDFERENCE RoHS:否 制造商:Maxim Integrated 输入补偿电压: 转换速度: 电源电压-最大:20 V 电源电压-最小:9 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-38 封装:Tube |
| EL5225IRZ-T7 | 功能描述:LCD Gamma缓冲器 EL5225IRZ 10-CH TFT- LCDFERENCE RoHS:否 制造商:Maxim Integrated 输入补偿电压: 转换速度: 电源电压-最大:20 V 电源电压-最小:9 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-38 封装:Tube |
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| EL5226IR | 功能描述:IC VREF GEN 10CH TFT-LCD 28TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,000 系列:- 应用:电源，ICERA E400，E450 输入电压:4.1 V ~ 5.5 V 输出数:10 输出电压:可编程 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:42-WFBGA，WLCSP 供应商设备封装:42-WLP 包装:带卷 (TR) |
| EL5226IR-T13 | 功能描述:IC VREF GEN 10CH TFT-LCD 28TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,000 系列:- 应用:电源，ICERA E400，E450 输入电压:4.1 V ~ 5.5 V 输出数:10 输出电压:可编程 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:42-WFBGA，WLCSP 供应商设备封装:42-WLP 包装:带卷 (TR) |
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