參數資料
型號: UC3843N
廠商: 意法半導體
英文描述: CURRENTMODE PWM CONTROLLER
中文描述: 電流模式的PWM控制器
文件頁數: 4/11頁
文件大?。?/td> 96K
代理商: UC3843N
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PDF資料
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UC3844D CURRENTMODE PWM CONTROLLER
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UC3845N CURRENTMODE PWM CONTROLLER
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相關代理商/技術參數
參數描述
UC3843NG4 功能描述:電流型 PWM 控制器 Current-Mode PWM Controller RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
UC3843P 制造商:TI 制造商全稱:Texas Instruments 功能描述:Current Mode PWM Controller
UC3843Q 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Mode SMPS Controller
UC3843QTR 制造商:TI 制造商全稱:Texas Instruments 功能描述:Current Mode PWM Controller
UC3843T 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER