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参数资料
| 型号： | E-UC2842BN |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDIP8 |
| 封装： | MINI, DIP-8 |
| 文件页数： | 11/18页 |
| 文件大小： | 452K |
| 代理商： | E-UC2842BN |
* All voltages are with respect to pin 5, all currents are positive into the specified terminal.
PIN CONNECTION (top view)
COMP
VFB
ISENSE
RT/CT
GROUND
OUTPUT
Vi
VREF
1
3
2
4
6
5
7
8
D95IN332
Minidip/SO8
ORDERING NUMBERS
SO8
Minidip
UC2842BD1; UC3842BD1
UC2843BD1; UC3843BD1
UC2844BD1; UC3844BD1
UC2845BD1; UC3845BD1
UC2842BN; UC3842BN
UC2843BN; UC3843BN
UC2844BN; UC3844BN
UC2845BN; UC3845BN
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
Vi
Supply Voltage (low impedance source)
30
V
Vi
Supply Voltage (Ii < 30mA)
Self Limiting
IO
Output Current
±1
A
EO
Output Energy (capacitive load)
5
J
Analog Inputs (pins 2, 3)
– 0.3 to 5.5
V
Error Amplifier Output Sink Current
10
mA
Ptot
Power Dissipation at Tamb
≤ 25 °C (Minidip)
1.25
W
Ptot
Power Dissipation at Tamb
≤ 25 °C (SO8)
800
mW
Tstg
Storage Temperature Range
– 65 to 150
°C
TJ
Junction Operating Temperature
– 40 to 150
°C
TL
Lead Temperature (soldering 10s)
300
°C
PIN FUNCTIONS
No
Function
Description
1
COMP
This pin is the Error Amplifier output and is made available for loop compensation.
2VFB
This is the inverting input of the Error Amplifier. It is normally connected to the switching
power supply output through a resistor divider.
3ISENSE
A voltage proportional to inductor current is connected to this input. The PWM uses this
information to terminate the output switch conduction.
4RT/CT
The oscillator frequency and maximum Output duty cycle are programmed by connecting
resistor RT to Vref and cpacitor CT to ground. Operation to 500kHz is possible.
5
GROUND
This pin is the combined control circuitry and power ground.
6
OUTPUT
This output directly drives the gate of a power MOSFET. Peak currents up to 1A are sourced
and sunk by this pin.
7VCC
This pin is the positive supply of the control IC.
8Vref
This is the reference output. It provides charging current for capacitor CT through resistor RT.
UC2842B/3B/4B/5B - UC3842B/3B/4B/5B
2/15
相关PDF资料 |
PDF描述 |
|---|---|
| E-UC2844BD1 | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 |
| E-UC2845BD1013TR | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 |
| E05-41M1 | 5 WATT WIDE INPUT DC TO DC CONVERTERS |
| E05-41P3 | 5 WATT WIDE INPUT DC TO DC CONVERTERS |
| E05-41T | 5 WATT WIDE INPUT DC TO DC CONVERTERS |
相关代理商/技术参数 |
参数描述 |
|---|---|
| E-UC2843BD1 | 功能描述:电流型 PWM 控制器 0.5mA 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 |
| E-UC2843BD1013TR | 功能描述:电流型 PWM 控制器 0.5mA 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 |
| E-UC2843BN | 功能描述:电流型 PWM 控制器 0.5mA 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 |
| E-UC2844BD1 | 功能描述:电流型 PWM 控制器 0.5mA 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 |
| E-UC2844BD1013TR | 功能描述:电流型 PWM 控制器 0.5mA 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 |
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