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| 型号： | UC3842ADR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 1/18页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR FLYBK ISO CM 14SOIC |
| 产品变化通告： | Product Discontinuation 15/May/2006 |
| 标准包装： | 2,500 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 500kHz |
| 占空比： | 96% |
| 电源电压： | 10 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： | 14-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
| 其它名称： | UC3842ADR2GOS |
UC3842A, UC3843A,
UC2842A, UC2843A
High Performance
Current Mode Controllers
The UC3842A, UC3843A series of high performance fixed
frequency current mode controllers are specifically designed for
off?line and DC?to?DC converter applications offering the designer a
cost effective solution with minimal external components. These
integrated circuits feature a trimmed oscillator for precise duty cycle
control, a temperature compensated reference, high gain error
http://onsemi.com
PDIP?8
N SUFFIX
amplifier, current sensing comparator, and a high current totem pole
output ideally suited for driving a power MOSFET.
Also included are protective features consisting of input and
reference undervoltage lockouts each with hysteresis, cycle?by?cycle
8
1
CASE 626
current limiting, programmable output deadtime, and a latch for single
pulse metering.
These devices are available in an 8?pin dual?in?line plastic package
as well as the 14?pin plastic surface mount (SOIC?14). The SOIC?14
14
1
SOIC?14
D SUFFIX
CASE 751A
package has separate power and ground pins for the totem pole output
stage.
The UCX842A has UYLO thresholds of 16 V (on) and 10 V (off),
ideally suited for off?line converters. The UCX843A is tailored for
lower voltage applications having UVLO thresholds of 8.5 V (on) and
7.6 V (off).
8
1
SOIC?8
D1 SUFFIX
CASE 751
Features
PIN CONNECTIONS
? Trimmed Oscillator Discharge Current for Precise Duty Cycle
Control
? Current Mode Operation to 500 kHz
? Automatic Feed Forward Compensation
? Latching PWM for Cycle?By?Cycle Current Limiting
? Internally Trimmed Reference with Undervoltage Lockout
? High Current Totem Pole Output
? Undervoltage Lockout with Hysteresis
? Low Startup and Operating Current
? Direct Interface with ON Semiconductor SENSEFET ? Products
? Pb?Free Packages are Available
Compensation 1
Voltage Feedback 2
Current Sense 3
R T /C T 4
Compensation 1
NC 2
Voltage Feedback 3
NC 4
5
Current Sense
(Top View)
8 V ref
7 V CC
6 Output
5 GND
14 V ref
13 NC
12 V CC
11 V C
10 Output
NC
R T /C T
6
7
9
8
GND
Power Ground
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
DEVICE MARKING INFORMATION
See general marking information in the device marking
? Semiconductor Components Industries, LLC, 2005
November, 2005 ? Rev. 8
1
Publication Order Number:
UC3842A/D
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相关代理商/技术参数 |
参数描述 |
|---|---|
| UC3842ADT | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Current-Mode SMPS Controller |
| UC3842ADTR | 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 |
| UC3842ADTRG4 | 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 |
| UC3842ADW | 功能描述:电流型 PWM 控制器 Current Mode 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 |
| UC3842ADWG4 | 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 |
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