參數(shù)資料
型號： IR21571
廠商： International Rectifier
英文描述： FULLY INTEGRATED BALLAST CONTROL IC
中文描述： 完全集成的鎮(zhèn)流器控制IC
文件頁數(shù)： 10/17頁
文件大?。?/td> 234K
代理商： IR21571
IR21571
(S)
10
www.irf.com
Figure 5: Deadtime versus R
DT
During the
Startup Mode
, the operating frequency is
determined by the parallel combination of R
PH
,
R
START
, and R
T
, combined with the values of C
START
,
C
T
and R
DT
, as shown in Figure 6. This frequency is
normally chosen to ensure that the instantaneous
voltage across the lamp during the first few cycles of
operation does not exceed the strike potential of the
lamp. As the voltage across C
START
charges up to the
R
T
lead voltage, the output frequency exponentially
decays to the preheat frequency.
During the Preheat Mode, the operating frequency
is determined by the parallel combination of R
PH
and
R
T
, combined with the value of C
T
and R
DT
. This
frequency, along with the Preheat Time, is normally
chosen to ensure that adequate heating of the lamp
filaments occur. Typically, a 4.5:1 ratio of the hot
filament-to-cold filament resistance is desired for
maximum lamp life, as shown in Figure 7.
Figure 6: Oscillator section block diagram with external component connection
0.1
1
10
1
100
RDT (Kohms)
tDEAD
(usec)
CT = 220 pF
CT = 470 pF
CT = 1 nF
2
4.0V
5.1V
3
5
7.6V
1.0uA
4
2.0V
I
RT
6
I
CT
= I
RT
7
4.0V
2.0V
CPH
RPH
RT
RUN
CT
DT
Q
S
R1
R2 Q
UNDER-
VOLTAGE
DETECT
C
PH
C
IGN
R
T
C
START
R
START
C
T
R
DT
R
PH
R
RUN
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參數(shù)描述
IR21571PBF 功能描述:功率驅(qū)動器IC Ballast Cntrl Thrml Ovrload Prot RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
IR21571PBF 制造商:International Rectifier 功能描述:Controller IC Output Voltage Max.:25V
IR21571S 功能描述:IC BALLAST CONTROL 16-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 照明，鎮(zhèn)流器控制器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 類型:CCFL 控制器 頻率:40 ~ 80 kHz 電流 - 電源:5mA 電流 - 輸出:- 電源電壓:4.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) 其它名稱:90-3991V+V01
IR21571SPBF 功能描述:功率驅(qū)動器IC BALLAST CTRL BELO 600V 15.6V VCC 150uA RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
IR21571STR 功能描述:IC BALLAST CONTROL INTEG 16-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 照明，鎮(zhèn)流器控制器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 類型:CCFL 控制器 頻率:40 ~ 80 kHz 電流 - 電源:5mA 電流 - 輸出:- 電源電壓:4.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) 其它名稱:90-3991V+V01
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