CXLC8953集成了一个高性能的升压转换器、两个电荷泵控制器和一个用于TFT-LCD应用的大电流运算放大器。主要的升压调节器是一个电流模式，固定频率的PWM开关调节器。1.5MHz的开关频率允许使用低轮廓电感和陶瓷电容器，以最小化LCD面板设计的厚度。电荷泵控制器提供可调节的TFT-LCD VGH和VGL电源的栅极驱动器。放大器是VCOM应用的理想选择，具有100mA输出短路电流驱动、10MHz带宽，和13V/ms转换率。所有的输入和输出都是轨对轨的
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[ CXLC8953 ]
目录
7.相关产品
产品概述 返回TOP
The CXLC8953 integrates with a high-performance stepup converter, two charge pump controllers and one high current operational amplifiers for TFT-LCD applications. The main step-up regulator is a current-mode, fixed-frequency PWM switching regulator. The 1.5MHz switching frequency allows the usage of low-profile inductors and ceramic capacitors to minimize the thickness of LCD panel designs.The charge pump controllers provide regulated the gate-driver of TFT-LCD VGH and VGL supplies.The amplifiers are ideal for VCOM applications, with 100mA output short circuit current drive, 10MHz bandwidth, and 13V/ms slew rate. All inputs and outputs are rail-to-rail. The CXLC8953 is available in a tiny 3mm x 3mm 20-pin QFN package (TQFN3x3-20).
产品特点 返回TOP
· Input Voltage Range from 2.7V to 5.5V
· Positive & Negative Charge Pump for VGH & VGL
· High Performance Operation Amplifier
- +100mA Output Short Circuit Current
- 13V/ms Slew Rate
- 10MHz, -3dB Bandwidth
· Control Output for External P-MOSFET to Support Completely Disconnecting the Battery
· Adjustable Power Sequence byExternal Capacitor
· Internal Soft-start
· Cycle By Cycle Current Limit
· Multiple Overload Protection
· Over Temperature Protection
· Available in TQFN3x3-20 Package
· HalogenandLeadFreeAvailable (RoHSCompliant)
应用范围 返回TOP
· Panel
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
电路原理图 返回TOP
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PMIC > LCD Bias Converter |
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Part_No |
Package |
Topology |
Buffer for Vcom |
Switch Current Limit (A) |
Vin (V) |
Fmax Khz |
SYNC ASYNC |
PFM/PSM |
Vref (V) |
R-Top milohm |
Iq(No load) (uA) |
En pin |
POK |
Charge Pump Output |
|
|
min |
max |
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|
TQFN3 x3-20 |
Boos tCharge pump |
Yes |
2 |
2.7 |
5.5 |
1500 |
ASYNC |
PSM/PWM |
1.25 |
500 |
300 |
Yes |
No |
Two set for VGH, VGL |
|
|
TQFN3 x3-20 |
Boos tCharge pump |
2 |
2.9 |
5.5 |
1000 |
ASYNC |
PSM/PWM |
1.25 |
Yes |
No |
Two set for VGH,VGL |
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|
TQFN5 x5-32 |
Boost Charge pump |
Yes |
1.8 |
3 |
5.5 |
1000 |
ASYNC |
PSM/PWM |
1.25 |
250 |
2000 |
Yes |
No |
Two set for VGH,VGL |
|
|
WLCSP1.92 x1.28-15 |
Boost Charge pum |
0.6 |
2.5 |
5.5 |
1800 |
SYNC |
PSM/PWM |
540 |
Yes |
No |
Two set for VGH,VGL |
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