参数资料
| 型号： | UC3843ANG |
| 厂商： | ON Semiconductor |
| 文件页数： | 2/18页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR FLYBK ISO PWM 8-DIP |
| 产品变化通告： | Product Discontinuation 15/May/2006 |
| 标准包装： | 50 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 500kHz |
| 占空比： | 96% |
| 电源电压： | 7.6 V ~ 30 V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 是 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 是 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 包装： | 管件 |
| 其它名称： | UC3843ANGOS |
UC3842A, UC3843A, UC2842A, UC2843A
V CC
7(12)
V ref
8(14)
R T C T
R
R
Oscillator
V ref
Undervoltage
Lockout
5.0V
Reference
V CC
Undervoltage
Lockout
V C
7(11)
Output
Voltage
Feedback
4(7)
+
Latching
PWM
6(10)
Power
Ground
Input
2(3)
Output
Compensation
1(1)
?
Error
Amplifier
GND
5(9)
5(8)
Current
Sense
3(5) Input
Pin numbers in parenthesis are for the D suffix SOIC?14 package.
Figure 1. Simplified Block Diagram
MAXIMUM RATINGS
Rating
Bias and Driver Voltages (Zero Series Impedance, see also Total Device spec)
Total Power Supply and Zener Current
Output Current, Source or Sink (Note 1)
Output Energy (Capacitive Load per Cycle)
Current Sense and Voltage Feedback Inputs
Error Amp Output Sink Current
Symbol
V CC , V C
(I CC + I Z )
I O
W
V in
I O
Value
30
30
1.0
5.0
? 0.3 to + 5.5
10
Unit
V
mA
A
m J
V
mA
Power Dissipation and Thermal Characteristics
D Suffix, Plastic Package
Maximum Power Dissipation @ T A = 25 ° C
Thermal Resistance, Junction?to?Air
P D
R q JA
862
145
mW
° C/W
N Suffix, Plastic Package
Maximum Power Dissipation @ T A = 25 ° C
Thermal Resistance, Junction?to?Air
Operating Junction Temperature
Operating Ambient Temperature
UC3842A, UC3843A
UC2842A, UC2843A
Storage Temperature Range
P D
R q JA
T J
T A
T stg
1.25
100
+ 150
0 to + 70
? 25 to + 85
? 65 to + 150
W
° C/W
° C
° C
° C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. Maximum Package power dissipation limits must be observed.
http://onsemi.com
2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| UC3843ANG4 | 功能描述:电流型 PWM 控制器 Current-Mode PWM Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| UC3843ANMOT | 制造商:ON Semiconductor 功能描述:ADVANCED PWM CONTROLLER 3843 DIP8 |
| UC3843AP-D08-T | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:CURRENT MODE PWM CONTROL CIRCUITS |
| UC3843AP-S08-R | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:CURRENT MODE PWM CONTROL CIRCUITS |
| UC3843AP-S08-T | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:CURRENT MODE PWM CONTROL CIRCUITS |
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