參數(shù)資料
型號(hào)： TPS65100RGE
廠商： Texas Instruments, Inc.
英文描述： TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND VCOM BUFFER
中文描述： 三路輸出液晶供應(yīng)線性穩(wěn)壓器和VCOM緩沖器
文件頁(yè)數(shù)： 11/25頁(yè)
文件大小： 816K
代理商： TPS65100RGE
www.ti.com
Positive Charge Pump
The TPS65100/05 has a fully regulated integrated positive charge pump generating Vo3. The input voltage for
the charge pump is applied to the SUP pin that is equal to the output of the main boost converter Vo1. The
charge pump is capable of supplying a minimum load current of 20 mA. Depending on the voltage difference
between Vo1 and Vo3 higher load currents are possible. See Figure 13 and Figure 14.
Negative Charge Pump
The TPS65100/05 has a regulated negative charge pump using two external Schottky diodes. The input voltage
for the charge pump is applied to the SUP pin that is connected to the output of the main boost converter Vo1.
The charge pump inverts the main boost converter output voltage and is capable of supplying a minimum load
current of 20 mA. Depending on the voltage difference between Vo1 and Vo2, higher load currents are possible.
See Figure 12.
Linear Regulator Controller
The TPS65100/05 includes a linear regulator controller to generate a 3.3-V rail which is useful when the system
is powered from a 5-V supply. The regulator is independent from the other voltage rails of the device and has its
own enable (ENR).
Soft Start
The main boost converter as well as the charge pumps, linear regulator, and VCOM buffer have an internal soft
start. This avoids heavy voltage drops at the input voltage rail or at the output of the main boost converter Vo1
during start-up caused by high inrush currents. See Figure 10 and Figure 11.
Fault Protection
All the outputs of the TPS65100/05 have short circuit detection and cause the device to go into shutdown. The
main boost converter has overvoltage and undervoltage protection. If the output voltage Vo1 rises above the
overvoltage protection threshold of typically 5% of Vo1, then the device stops switching but remains operational.
When the output voltage falls below this threshold again, then the converter continues operation. When the
output voltage falls below the undervoltage protection threshold of typically 8.75% of Vo1, in case of a short
circuit condition, then the TPS65100/05 goes into shutdown. Because there is a direct pass from the input to the
output through the diode, the short circuit condition remains. If this condition needs to be avoided, a fuse at the
input or an output disconnect using a single transistor and resistor is required. The negative and positive charge
pumps have an undervoltage lockout to protect the LCD panel of possible latch-up conditions in case of a short
circuit condition or faulty operation. When the negative output voltage is typically above 9.5% of its output voltage
(closer to ground), then the device enters shutdown. When the positive charge pump output voltage Vo3 is below
8% typ of its output voltage, then the device goes into shutdown as well. See the electrical characteristics table
under fault protection thresholds. The device can be enabled again by toggling the enable pin (EN) below 0.4 V
or by cycling the input voltage below the UVLO of 1.7 V. The linear regulator reduces the output current to typical
20 mA under a short circuit condition when the output voltage is typically < 1 V. See the functional block diagram.
The linear regulator does not go into shutdown under a short-circuit condition.
TPS65100
TPS65105
SLVS496B–SEPTEMBER 2003–REVISED MARCH 2004
DETAILED DESCRIPTION (continued)
If the enable pin EN is pulled high, the device starts its power on sequencing. The main boost converter starts up
first with its soft start. If the output voltage has reached 91.25% of its output voltage, the negative charge pump
comes up next. The negative charge pump starts with a soft start and when the output voltage has reached 91%
of the nominal value, the positive charge pump comes up with a soft start. The VCOM buffer is enabled as soon
as the positive charge pump has reached its nominal value and VCOMIN is greater than typically 1.0 V.
Pulling the enable pin low shuts down the device. Depended on load current and output capacitance, each of the
outputs goes down.
11
相關(guān)PDF資料
PDF描述
TPS65105RGE TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND VCOM BUFFER
TPS65111 Triple Chargepump for LTPS LCD
TPS65110RGE LTPS LCD BIAS POWER SUPPLY TRIPLE CHARGE PUMP
TPS65111RGE LTPS LCD BIAS POWER SUPPLY TRIPLE CHARGE PUMP
TPS65121RGT SINGLE-INDUCTOR QUADRUPLE-OUTPUT TFT LCD POWER SUPPLY
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS65100RGER 功能描述:LCD 驅(qū)動(dòng)器 Triple-Out TFT LCD Supply w/VCOM Buffer RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TPS65100RGERG4 功能描述:LCD 驅(qū)動(dòng)器 Triple-Out TFT LCD Supply w/VCOM Buffer RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TPS65101PWP 功能描述:LCD 驅(qū)動(dòng)器 Triple Output LCD Supply RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TPS65101PWPG4 功能描述:LCD 驅(qū)動(dòng)器 Triple Output LCD Supply RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TPS65101PWPR 功能描述:LCD 驅(qū)動(dòng)器 Triple Output LCD Supply RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*