CXLC89100/ADC-DC转换器提供TQFN封装的薄膜晶体管（TFT）液晶显示器（LCD）面板所需的调节电压。一个升压转换器、一个降压转换器和两个电荷泵将8V到14V的输入电压转换为四个输出电压。这些功能完成了大屏幕液晶面板的供电要求。升压转换器提供电源电压VS，降压转换器为系统提供逻辑电压。双电荷泵独立地产生可调节的输出电压VGL和VGH来偏置LCD。这四个模块以500kHz或750kHz的固定开关频率工作。升压和降压转换器都以异步开关模式工作。电流模式控制提供了快速的瞬态响应，简化了回路稳定。故障保护包括逐周电流限制、热关机和输出故障关机。两个电荷泵均采用电流模式控制，以调节其输出电压，从而使输出纹波和电容器尺寸最小化。采用高压开关进行栅极电压整形，提高了TFT-LCD的显示质量。CXLC89100/A包括一个高速大电流运算放大器和一个用于伽马缓冲参考的高精度LDO
[ CXLC89100/A ]
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产品概述 返回TOP
产品特点 返回TOP
„ 8V to 14V Input Voltage Range
„ 500kHz/750kHz Fixed Switching Frequency
„ VS Step-Up Converter
‹ Current Mode
‹ 1% Feedback Accuracy
‹ Output Voltage Range up to 20V
‹ 3A Switch Current
‹ Adjustable Soft Start
‹ Adjustable Current Limit
„ VLOGIC Step-Down Converter
‹ Current Mode
‹ 1% Feedback Accuracy
‹ 2.5A Switch Current
‹ 2.5ms Internal Soft Start
„ 150mA Negative Charge Pump Driver for VGL
„ 150mA Positive Charge Pump Driver for VGH
„ Integrated High Voltage Switch for Gate Voltage Shaping
„ High Voltage LDO for VREF
‹ 0.5% Feedback Accuracy
‹ 0.5V Dropout at 60mA Output Current
„ High-Speed Operational Amplifier
‹ 20MHz -3dB Bandwidth
‹ 45 V/μs Slew Rate
‹ ±200-mA Short-Circuit Current
„ Gate Drive Signal to Drive External MOSFET
„ XAO Comparator
„ Thermal Shutdown
„ Available in 7mmx7mm 48-pin TQFN Package
应用范围 返回TOP
„ LCD TV Panels
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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Integrated PMIC for LCD |
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Part NO. |
Vin(V) min. |
Vin(V) max. |
FSW (kHz) |
ILX (A) |
VLX (V) |
OPAS/ R(V/μs |
OPAI SCmA |
Note |
Package |
|
2.5 |
5.5 |
1200 |
3 |
18 |
40 |
200 |
Async-Boost,VGH/VGL Charge-Pump, VCOM,GPM, Voltage Detector |
TQFN4X4-24 |
|
|
2.5 |
5.5 |
1200 |
1.8 |
20 |
12 |
150 |
Async-Boost, VCOM,VGH/VGL Charge-Pump, 1-CH WLED Driver with EN,LXB=20V/1.2A |
TQFN4X4-24 |
|
|
2.5 |
5.5 |
1200 |
2 |
20 |
12 |
200 |
Async-Boost,VGL Regulator,LDO,GPM,OPA, Voltage Detector,6-CH WLED Driver,30mA/CH |
TQFN5X5-40 |
|
|
2.5 |
5.5 |
600 |
2 |
20 |
12 |
200 |
Async-Boost,VGL Regulator,LDO,GPM,OPA, Voltage Detector,6-CH WLED Driver,30mA/CH |
TQFN5X5-40 |
|
|
2.6 |
5.5 |
600/ 1200 |
3 |
20 |
20 |
200 |
Async-Boost,VGH Regulator,OPA*3,Buck-Boost VGL Temp. Compensation,7-CH-33V~+33V Level-Shifter |
TQFN6X6-48 |
|
|
2.6 |
5.5 |
600/ 1200 |
-- |
-- |
20 |
200 |
Async-Boost,VGH Regulator,OPA*3,Buck-Boost VGL Temp. Compensation,7-CH-33V~+33V Level-Shifter |
QFN6X6-48 |
|
|
2.6 |
5.5 |
600/ 1200 |
3 |
20 |
20 |
200 |
Async-Boost,VGH Regulator,OPA*3,Buck -Boost VGL with Temp. Compensation |
QFN5X5-32 |
|
|
8 |
14 |
750 |
5 |
24 |
30 |
200 |
Async-Boost,Async-Buck, OPA,VGON and VGOFF Regulator,GPM,VGH Temp. Compensation,I2C |
TQFN6X6-40 |
|
|
2.5 |
5.5 |
1200 |
4.5 |
18 |
-- |
-- |
Async-Boost, VGHM,VGH/VGOFF Charge-Pump |
TQFN5X5-20 |
|
|
2.5 |
5.5 |
1200 |
3 |
18 |
40 |
200 |
Async-Boost,VGH/VGL Charge-Pump, VCOM, GPM,Voltage Detector |
TQFN4X4-24 |
|
|
2.5 |
5.5 |
1200 |
1.8 |
20 |
12 |
150 |
Async-Boost,VGH/VGL Charge-ump,VCOM, |
TQFN3X3-16 |
|
|
2.5 |
5.5 |
1200 |
1.8 |
20 |
12 |
150 |
Async-Boost,VGH/VGL Charge-Pump,VCOM, |
TQFN3X3-16 |
|
|
2.5 |
5.5 |
640/ 1200 |
2 |
20 |
12 |
150 |
Async-Boost, VGH Charge-Pump,VCOM, GPM, Voltage Detector,LDO |
TQFN4X4-24 |
|
|
2.5 |
5.5 |
640/ 1200 |
2 |
20 |
12 |
150 |
Async-Boost,VGH Charge-Pump,VCOM,LDO,GPM, Voltage Detector,4-CH WLED Driver,50mA/CH |
TQFN5X5-40 TQFN3.8X6.2 |
|
|
2.5 |
5.5 |
640/ 1200 |
2 |
20 |
12 |
150 |
Async-Boost,VGH Charge-Pump,VCOM, GPM, Voltage Detector |
TQFN4X4-24 |
|
|
2.5 |
5.5 |
1200 |
1.8 |
20 |
12 |
150 |
Async-Boost,VGH Charge-Pump,VGL Charge-Pump, Voltage Detector,1-CH WLEDdriver,240mA/CH,HVInput |
TQFN4X4-24 |
|
|
8 |
14 |
500/ 750 |
2.3 |
19 |
-- |
-- |
Async-Boost,Async-Buck,VGH/VGL,Charge-Pump |
TSSOP-28(FD) |
|
|
8 |
14 |
500/ 750 |
3 |
20 |
45 |
200 |
Async-Boost,Async-Buck, VGH/VGL Charge-Pump, GPM,VCOM,Voltage Detector,HV LDO |
TQFN7X7-48 |
|
|
9.5 |
14 |
500~ 2000 |
3.5 |
20 |
-- |
-- |
Async-Boost,Async-Buck,VGON and VGOFF Regulator |
TQFN5X5-28 |
|
|
8 |
14 |
750/ 1000 |
5 |
24 |
-- |
-- |
Async-Boost,Sync-Buck*2,Async-Buck,VGON and VGOFF Regulator,GPM,VGH Temp.Compensation,I2C |
TQFN6X6-40 |
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