参数资料
| 型号： | UBA2024AP/N1,112 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 5/17页 |
| 文件大小： | 0K |
| 描述： | IC DRIVER HALF BRIDGE 8-DIP |
| 标准包装： | 50 |
| 类型： | CFL/TL 驱动器 |
| 频率： | 40.05kHz ~ 42.68kHz |
| 电流 - 电源： | 5mA |
| 电源电压： | 11.7 V ~ 13.3 V |
| 工作温度： | -40°C ~ 150°C |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-DIP |
| 包装： | 管件 |
| 其它名称： | 568-4921-5 935288801112 |
NXP Semiconductors
V RC
UBA2024
Half-bridge power IC for CFL lamps
0
HS
drive
0
LS
drive
0
V OUT
half
bridge
0
time
time
time
time
014aaa658
Fig 4.
Oscillator, drivers and output signals
When entering the sweep mode (V SW = 0 V), the bridge oscillator starts at 2.5 times the
nominal bridge frequency and sweeps down to the nominal frequency (bridge), set by
R OSC and C OSC . During the sweep mode the amplitude of the RC oscillator on pin RC, will
swing between V trip(osc)low and V SW + 0.4V trip(osc)high . The amplitude of the RC oscillator
will continue to increase until V SW + 0.4V trip(osc)high = V trip(osc)high , this determines the end
of the sweep time. The voltage on pin SW however will continue to rise until it reaches
supply voltage level.
During this continuous decrease in frequency, the circuit approaches the resonance
frequency of the load, and this causes a high voltage across the load, which ignites the
lamp. The sweep to resonance time should be much larger than the settling time of the
supply voltage on pin HV, to guarantee that the full high-voltage is present at the moment
UBA2024
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 6.2 — 1 November 2010
? NXP B.V. 2010. All rights reserved.
5 of 17
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