The CXLC8954 integrates with two high-performance stepup converter and two charge pump controllers for TFTLCD and Backlight applications. Both the two step-up regulators are a current-mode, fixed-frequency PWM switching regulator. The 1.0MHz switching frequency allows the usage of low-profile inductors and ceramic capacitors to minimize the thickness of LCD panel designs
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[ CXLC8954 ]"
目录
7.相关产品
产品概述 返回TOP
The CXLC8954 integrates with two high-performance stepup converter and two charge pump controllers for TFTLCD and Backlight applications. Both the two step-up regulators are a current-mode, fixed-frequency PWM switching regulator. The 1.0MHz 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 gatedriver of TFT-LCD VGH and VGL supplies. The CXLC8954 is available in a tiny 3mm x 3mm 20-pin TQFN package (TQFN3x3-20).
产品特点 返回TOP
· 2.9V to 5.5V Input Supply Range
· Current Mode Step-up Regulator (LCD bias)
- 1MHz Fixed Operating Frequency
- Fast Transient Response
- 18V/700mA ,1.5W Internal N-MOS
· Positive & Negative Charge Pump Driver for VGH, VGL
· Current Mode Step-up Regulator (LED BL)
- 1MHz Fixed Operating Frequency
- 0.2V Feedback Voltage
- 18V/2A, 0.3W internal N-MOS
· Control Output for External P-MOS to Support
· Completely Disconnecting the Battery
· Adjustable Power Sequencing by External Capacitor
· Internal Soft-Start
· Multiple Overload Protection
· Thermal Shutdown
· Available in Small Package:TQFN3x3-20
应用范围 返回TOP
· Tablet PC
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 |
||||
|
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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