參數(shù)資料
型號(hào): UC3845
廠商: ON SEMICONDUCTOR
英文描述: High Performance Current Mode Controllers(高性能電流模式控制器)
中文描述: 高性能電流模式控制器(高性能電流模式控制器)
文件頁(yè)數(shù): 8/16頁(yè)
文件大?。?/td> 354K
代理商: UC3845
UC3844, UC3845, UC2844, UC2845
http://onsemi.com
8
+
Sink Only
Positive True Logic
=
R
S
+
Internal
Bias
Reference
Regulator
Oscillator
S
R
Q
V
ref
UVLO
3.6V
36V
V
CC
7(12)
Q1
V
in
V
CC
V
C
7(11)
6(10)
5(8)
3(5)
+
1.0mA
Error
Amplifier
1(1)
2(3)
4(7)
8(14)
5(9)
GND
Output
Compensation
Voltage Feedback
Input
R
T
C
T
V
ref
PWM
Latch
Current Sense
Comparator
R
R
Power Ground
Current Sense Input
2R
R
1.0V
Pin numbers in parenthesis are for the D suffix SOIC14 package.
Q
T
+
+
+
+
+
V
CC
UVLO
Output
2.5V
Figure 16. Representative Block Diagram
Output/
Compensation
Current Sense
Input
Latch
‘‘Reset’’ Input
Output
Capacitor C
T
Latch
‘‘Set’’ Input
Large R
T
/Small C
T
Small R
T
/Large C
T
Figure 17. Timing Diagram
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UC3845A 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:Current Mode PWM Controller
UC3845A-BW 制造商:FCI 制造商全稱(chēng):First Components International 功能描述:Current Mode PWM Controller Low Start-Up and Operating Current
UC3845AD 功能描述:電流型 PWM 控制器 Current Mode RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)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(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
UC3845AD1 功能描述:電流型 PWM 控制器 RO 511-UC3845BD 9/04 RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)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(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
UC3845AD1013TR 制造商:STMicroelectronics 功能描述: