参数资料
| 型号： | UBA2071ATS/N1,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 11/35页 |
| 文件大小： | 0K |
| 描述： | IC DVR HALF BRIDGE 24-SSOP |
| 标准包装： | 1,000 |
| 类型： | CCFL/EEFL 控制器 |
| 频率： | 38 ~ 42kHz |
| 电流 - 电源： | 1.5mA |
| 电源电压： | 14V |
| 工作温度： | -25°C ~ 100°C |
| 封装/外壳： | 24-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 24-SSOP |
| 包装： | 带卷 (TR) |
| 其它名称： | 935285777118 |
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NXP Semiconductors
UBA2071; UBA2071A
Half bridge control IC for CCFL backlighting
(H)2(EN)
EN
(H)1(EN)
(L)(EN)
0
GH
GL
V SH
0
0.5 T
7.5 T
T
7.5 T
disabled
3 / f sw(min)
1 / f sw(max)
3 / f sw(min)
initial ignition sweep
and normal mode
DC blocking capacitor charging
014aaa252
Fig 7.
DC blocking capacitor charging mode
Remark: Due to the nature of the charging sequence, V Cblock will automatically be
charged to 0.5 × V HV (when given enough time). If the IC is kept in DC blocking capacitor
charging mode longer than necessary, V Cblock will remain 0.5 × V HV . Therefor the time
constant made by R1 and C1 in example A in Figure 6 , is not critical. However, since
V Cblock cannot become more than 0.5 × V HV , it is important to take a lower target value for
V Cblock than 0.5 × V HV (with enough margin) in examples B and C of Figure 6 , otherwise
the IC may get stuck in DC blocking capacitor charging mode.
8.8 Lamp (re-)ignition
The IC starts at its maximum switching frequency f sw(max) . The lamp current and the lamp
voltage control loops are enabled. The frequency is swept down towards the minimum
frequency f sw(min) , see Figure 9 . During this initial ignition frequency sweep the lamp
voltage will increase as the frequency comes closer to the resonant frequency of the
unloaded resonance circuit. Once the ignition voltage V ign is reached the lamps will ignite
and the lamp voltage will drop 4 to the voltage of the loaded resonance curve, see
4.
For CCFLs only.
UBA2071_A_1
? NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 01 — 23 June 2008
11 of 35
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相关代理商/技术参数 |
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| UBA2071T | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Half bridge control IC for CCFL backlighting |
| UBA2071T/N1,118 | 功能描述:显示驱动器和控制器 Half brdg control IC for CCFL bcklighting RoHS:否 制造商:Panasonic Electronic Components 工作电源电压:2.7 V to 5.5 V 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Reel |
| UBA2071TS | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Half bridge control IC for CCFL backlighting |
| UBA2071TS/N1,118 | 功能描述:显示驱动器和控制器 Half brdg control IC for CCFL bcklighting RoHS:否 制造商:Panasonic Electronic Components 工作电源电压:2.7 V to 5.5 V 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Reel |
| UBA2072T/N1,518 | 功能描述:显示驱动器和控制器 L-VOLT FULL-BRG CNTR IC FOR CCFL BCKLIGHT RoHS:否 制造商:Panasonic Electronic Components 工作电源电压:2.7 V to 5.5 V 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Reel |
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