參數(shù)資料
型號(hào): UC3842
廠商: 意法半導(dǎo)體
英文描述: CURRENTMODE PWM CONTROLLER
中文描述: 電流模式的PWM控制器
文件頁(yè)數(shù): 4/11頁(yè)
文件大小: 96K
代理商: UC3842
Notes :
2. Theseparameters, although guaranteed, are not 100% tested in production.
3. Parameter measured at trippoint of latchwith V
PIN2
= 0.
4. Gaindefined as :
V
PIN1
A =
; 0
V
PIN3
0.8V
V
PIN3
5. Adjust V
above the startthreshold before settingat 15 V.
6. Outputfrequency equals oscillator frequency forthe UC3842and UC3843.
Outputfrequency is one halfoscillator frequency for the UC3844 and UC3845.
ELECTRICAL CHARACTERISTICS
(continued)
Symbol
Parameter
Test Conditions
UC284X
Min. Typ. Max. Min. Typ. Max.
UC384X
Unit
UNDER-VOLTAGE LOCKOUT SECTION
Start Threshold
X842/4
15
16
17
14.5
16
17.5
V
X843/5
7.8
8.4
9.0
7.8
8.4
9
V
Min Operating Voltage
After Turn-on
X842/4
9
10
11
8.5
10
11.5
V
X843/5
7.0
7.6
8.2
7.0
7.6
8.2
V
PWM SECTION
Maximum Duty Cycle
X842/3
93
97
100
93
97
100
%
X844/5
46
48
50
47
48
50
%
Minimum Duty Cycle
0
0
%
TOTAL STANDBY CURRENT
I
st
I
i
V
iz
Start-up Current
0.5
1
0.5
1
mA
Operating Supply Current
V
PIN2
= V
PIN3
= 0V
I
i
= 25mA
11
20
11
20
mA
Zener Voltage
34
34
V
UC2842/3/4/5-UC3842/3/4/5
4/11
相關(guān)PDF資料
PDF描述
UC3842 Current-mode PWM controller
UC3842D Current-mode PWM controller
UC3842N Current-mode PWM controller
UC3843D CURRENTMODE PWM CONTROLLER
UC3843N CURRENTMODE PWM CONTROLLER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UC3842A 制造商:FCI 制造商全稱(chēng):First Components International 功能描述:High Performance Current Mode Controller
UC3842A/D 制造商:MOTOROLA 制造商全稱(chēng):Motorola, Inc 功能描述:High Performance Current Mode Controller
UC3842A_05 制造商:ONSEMI 制造商全稱(chēng):ON Semiconductor 功能描述:High Performance Current Mode Controllers
UC3842A_07 制造商:ONSEMI 制造商全稱(chēng):ON Semiconductor 功能描述:High Performance Current Mode Controllers
UC3842A_11 制造商:UTC-IC 制造商全稱(chēng):UTC-IC 功能描述:CURRENT MODE PWM CONTROL CIRCUITS