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參數(shù)資料
| 型號： | UC3842BVDR2 |
| 英文描述： | I2C BUS-CONTROLLED MULTISTANDARD SINGLE CHIP TV PROCESSOR |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 7/20頁 |
| 文件大?。?/td> | 296K |
| 代理商： | UC3842BVDR2 |
UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV
http://onsemi.com
7
PIN FUNCTION DESCRIPTION
Pin
8–Pin
14–Pin
Function
Description
1
1
Compensation
This pin is the Error Amplifier output and is made available for loop compensation.
2
3
Voltage
Feedback
This is the inverting input of the Error Amplifier. It is normally connected to the switching
power supply output through a resistor divider.
3
5
Current
Sense
A voltage proportional to inductor current is connected to this input. The PWM uses this
information to terminate the output switch conduction.
4
7
R
T
/C
T
The Oscillator frequency and maximum Output duty cycle are programmed by
connecting resistor R
T
to V
ref
and capacitor C
T
to ground. Operation to 500 kHz
is possible.
5
Gnd
This pin is the combined control circuitry and power ground.
6
10
Output
This output directly drives the gate of a power MOSFET. Peak currents up to 1.0 A are
sourced and sunk by this pin.
7
12
V
CC
This pin is the positive supply of the control IC.
8
14
V
ref
This is the reference output. It provides charging current for capacitor C
T
through resistor R
T
.
8
Power
Ground
This pin is a separate power ground return that is connected back to the power source. It is
used to reduce the effects of switching transient noise on the control circuitry.
11
V
C
The Output high state (V
OH
) is set by the voltage applied to this pin. With a separate
power source connection, it can reduce the effects of switching transient noise on the
control circuitry.
9
Gnd
This pin is the control circuitry ground return and is connected back to the power
source ground.
2,4,6,13
NC
No connection. These pins are not internally connected.
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PDF描述 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UC3842BVDR2G | 功能描述:電流型 PWM 控制器 52kHz 1A Current PWM w/96% Duty Cycle Max RoHS:否 制造商:Texas Instruments 開關(guān)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(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| UC3842BVN | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:HIGH PERFORMANCE CURRENT MODE CONTROLLERS |
| UC3842CD | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| UC3842CS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| UC3842D | 功能描述:電流型 PWM 控制器 Current Mode RoHS:否 制造商:Texas Instruments 開關(guān)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(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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