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參數(shù)資料
| 型號： | UCC2974 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | DUAL COLD CATHODE FLUORESCENT LAMP CONTROLLER |
| 中文描述： | 雙冷陰極熒光燈控制器 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 210K |
| 代理商： | UCC2974 |
SLUS485A – JULY 2001 – REVISED NOVEMBER 2001
1
www.ti.com
FEATURES
Synchronous or Nonsynchronous Operation
Dual Output and Control Stages
BiCMOS Technology
Accurate Current Control with 2-mA Typical
Supply Current
Analog or Digital Low-Frequency Dimming
Capability
Open Lamp Protection with Voltage Clamp
4.5-V to 25-V Operation
PWM Frequencies Synchronized to External
Resonant Tanks
TSSOP-16 (PW) Package
APPLICATIONS
Portable PCs
Desktop LCD Monitors
Internet Appliances
DESCRIPTION
Design goals for a cold cathode fluorescent lamp
(CCFL) converter used for a liquid crystal display
(LCD) monitor application include small size, high
efficiency, and low cost. The UCC2974/UCC3974
CCFL controllers provide the necessary circuit
blocks to implement a highly efficient LCD monitor
backlight supply in a small 16-pin TSSOP
package. The device features two control stages
for operating independent resonant tanks for
multi-lamp designs. The BiCMOS controller
typically consumes less than 2-mA of operating
current, improving overall system efficiency.
External parts count is minimized and system cost
is reduced by integrating such features as dual
PWM driver stages, open lamp protection,
overvoltage clamp, and synchronization circuitry
between the buck and push-pull stages. The
device operates in both analog and low-frequency
dimming modes.
Copyright
2001, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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1
OUT1
16
OUT2
2
VIN
15
GND
3
BUCK1
14
BUCK2
4
COMP1
13
CBP
5
FB1
12
COMP2
6
RC
11
FB2
7
RD
10
MODE
8
DIM
9
LFDSYNC
UCC3974
VIN
VIN
VIN
BRIGHT
SYNC
M
TYPICAL APPLICATION
UDG–01023
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| UCC381-x | Low Dropout 1 Ampere Linear Regulator Family |
| UCC3813PWTR-2 | Low Power Economy BiCMOS Current Mode PWM |
| UCC3813PWTR-4 | Low Power Economy BiCMOS Current Mode PWM |
| UCC3813NTR-0 | Low Power Economy BiCMOS Current Mode PWM |
| UCC3813NTR-1 | Low Power Economy BiCMOS Current Mode PWM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UCC2974PW | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| UCC2975PW | 功能描述:LCD 驅(qū)動器 Multi-Topology Piezoelectric 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 |
| UCC2975PWG4 | 功能描述:LCD 驅(qū)動器 Multi-Topology Piezoelectric 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 |
| UCC2976PW | 功能描述:LCD 驅(qū)動器 Multi-Topology Piezoelectric 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 |
| UCC2976PWG4 | 功能描述:LCD 驅(qū)動器 Multi-Topology Piezoelectric 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 |
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