- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄381151 > UC1871N 4X30W quad bridge car radio amplifier PDF資料下載
參數(shù)資料
| 型號(hào)： | UC1871N |
| 英文描述： | 4X30W quad bridge car radio amplifier |
| 中文描述： | 工業(yè)控制IC |
| 文件頁數(shù)： | 5/6頁 |
| 文件大?。?/td> | 490K |
| 代理商： | UC1871N |
A unique protection feature incorporated in the UC3871
is the Open Lamp Detect circuit. An open lamp interrupts
the current feedback loop and causes very high secon-
dary voltage. Operation in this mode will usually break-
down the transformer’s insulation, causing permanent
damage to the converter. The open lamp detect circuit,
shown in Figure 3 senses the lamp current feedback sig-
nal at the error amplifiers input, and shuts down the out-
puts if insufficient signal is present. Soft-start circuitry
limits initial turn-on currents and blanks the open lamp
detect signal.
Other features are included to minimize external circuitry
requirements. A logic level enable pin shuts down the IC,
allowing direct connection to the battery. During shut-
down, the IC typically draws less than 1
μ
A. The UC3871,
operating from 4.5V to 20V, is compatible with almost all
battery voltages used in portable computers. Under-volt-
age lockout circuitry disables operation until sufficient
supply voltage is available, and a 1% voltage reference
insures accurate operation. Both inputs to the LCD sup-
ply error amplifier are uncommitted, allowing positive or
negative supply loop closure without additional circuitry.
The LCD supply modulator also incorporates cycle-by-
cycle current limiting for added protection.
Figure 3
UC1871
UC2871
UC3871
UNITRODE INTEGRATED CIRCUITS
7 CONTINENTAL BLVD.
MERRIMACK, NH 03054
TEL. (603) 424-2410
FAX (603) 424-3460
APPLICATION INFORMATION (cont.)
Figure 2
UC1871 Open Lamp Detect Circuitry
UC3871 Oscillator Section
5
Powered by ICminer.com Electronic-Library Service CopyRight 2003
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UC1871Q | Industrial Control IC |
| UC1874DWTR-1 | Analog IC |
| UC1874DWTR-2 | 4 x 45 W quad bridge car radio amplifier |
| UC1874QTR-1 | 4 x 45W quad bridge car radio amplifier |
| UC1874QTR-2 | 35W bridge car radio amplifier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UC1871Q | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Industrial Control IC |
| UC1872 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Resonant Lamp Ballast Controller |
| UC1872_09 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Resonant Lamp Ballast Controller |
| UC1874 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:High Efficiency, Synchronous, Step-down (Buck) Controllers |
| UC1874-1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:High Efficiency, Synchronous, Step-down (Buck) Controllers |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。