- 您现在的位置：买卖IC网 > PDF目录21977 > UBA2014T/N1,518 (NXP Semiconductors)IC CNTL BALLAST 600V 16-SOIC PDF资料下载
参数资料
| 型号： | UBA2014T/N1,518 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 6/19页 |
| 文件大小： | 0K |
| 描述： | IC CNTL BALLAST 600V 16-SOIC |
| 标准包装： | 1 |
| 类型： | 镇流器控制器 |
| 频率： | 40.5 ~ 100 kHz |
| 电流 - 电源： | 1.5mA |
| 电流 - 输出： | 330mA |
| 电源电压： | 9.1 V ~ 13 V |
| 工作温度： | -25°C ~ 80°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SO |
| 包装： | 标准包装 |
| 产品目录页面： | 844 (CN2011-ZH PDF) |
| 其它名称： | 568-3322-6 |
NXP Semiconductors
UBA2014
600 V driver IV for HF ?uorescent lamps
8.5 Preheat state
After starting at f max , the frequency decreases until the momentary value of the voltage
across sense resistor R14 reaches the internally ?xed preheat voltage level (pin PCS). At
crossing the preheat voltage level, the output current of the
Preheat Current Sensor (PCS) circuit discharges the capacitor C CSW , thus raising the
frequency. The preheat time begins at the moment that the circuit starts oscillating. During
the preheat time the Average Current Sensor (ACS) circuit is disabled. An internal ?lter of
30 ns is included at pin PCS to increase the noise immunity.
8.6 Ignition state
After the preheat time the ignition state is entered and the frequency will sweep down due
During this continuous decrease in frequency, the circuit approaches the resonant
frequency of the load. This will cause a high voltage across the load, which normally
ignites the lamp. The ignition voltage of a lamp is designed above the V lamp(fail) level. If the
lamp voltage exceeds the V lamp(fail) level the ignition timer is started.
8.7 Burn state
If the lamp voltage does not exceed the V lamp(max) level the voltage at pin CSW will
continue to increase until the clamp level at pin CSW is reached; see Figure 5 . As a
consequence the frequency will decrease until the minimum frequency is reached.
When the frequency reaches its minimum level it is assumed that the lamp has ignited and
the circuit will enter the burn state. The ACS circuit will be enabled. As soon as the
averaged voltage across sense resistor R14, measured at pin CSN, reaches the reference
level at pin CSP, the average current sensor circuit will take over the control of the lamp
current. The average current through R14 is transferred to a voltage at the voltage
controlled oscillator and regulates the frequency and, as a result, the lamp current.
8.8 Lamp failure mode
8.8.1 During ignition state
If the lamp does not ignite, the voltage level increases. When the lamp voltage exceeds
When the V lamp(fail) level is crossed the ignition timer has already started. If the voltage at
pin LVS is above the V lamp(fail) level at the end of the ignition time the circuit stops
oscillating and is forced into the Power-down mode. The circuit will be reset only when the
supply voltage is powered down.
8.8.2 During burn state
If the lamp fails during normal operation, the voltage across the lamp will increase and the
lamp voltage will exceed the V lamp(fail) level; see Figure 7 . At that moment the ignition timer
is started. If the lamp voltage increases further it will reach the V lamp(max) level. This forces
the circuit to reenter the ignition state and results in an attempt to re-ignite the lamp. If
during restart the lamp still fails, the voltage remains high until the end of the ignition time.
At the end of the ignition time the circuit stops oscillating and the circuit will enter the
Power-down mode.
UBA2014_4
? NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 04 — 16 October 2008
6 of 19
相关PDF资料 |
PDF描述 |
|---|---|
| VI-BTN-CV-F1 | CONVERTER MOD DC/DC 18.5V 150W |
| GMM43DRYN-S13 | CONN EDGECARD 86POS .156 EXTEND |
| VI-BT2-CV-F4 | CONVERTER MOD DC/DC 15V 150W |
| 4-1624113-7 | INDUCTOR .11UH 5% 0805 |
| HSM02DSEN | CONN EDGECARD 4POS .156 EYELET |
相关代理商/技术参数 |
参数描述 |
|---|---|
| UBA2015 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:600 V fluorescent lamp driver with PFC, linear dimming and boost function |
| UBA2015A | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:600 V fluorescent lamp driver with PFC, linear dimming and boost function |
| UBA2015AP | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:600 V fluorescent lamp driver with PFC, linear dimming and boost function |
| UBA2015AP/1,112 | 功能描述:显示驱动器和控制器 600V 0.16mA DIP20 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 |
| UBA2015APN1 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:600 V fluorescent lamp driver with PFC, linear dimming and boost function |
发布紧急采购，3分钟左右您将得到回复。