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參數(shù)資料
| 型號： | UC2886N |
| 英文描述： | Bluetooth class 2 module with embedded HCI FW |
| 中文描述： | 電流模式開關電源控制器 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 321K |
| 代理商： | UC2886N |
6/98
Average Current Mode PWM Controller IC
BLOCK DIAGRAM
UC1886
UC2886
UC3886
UDG-95098-2
DESCRIPTION
The UC3886 family of PWM controller ICs is designed for DC-to-DC con-
verters with average current mode control. It is designed for use in con-
junction with the UC3910 4-bit DAC and Voltage Monitor. The UC3886
drives an external N-channel MOSFET and can be used to power the In-
tel Pentium Pro and other high-end microprocessors.
The UC3886 in conjunction with the UC3910 converts 5VDC to an adjust-
able output ranging from 2.0V to 3.5V in 100mV steps with 35mV DC sys-
tem accuracy.
The oscillator is programmed by the user’s selection of an external resis-
tor and capacitor, and is designed for 300kHz typical operation.
The voltage and current amplifiers have 3.5MHz gain-bandwidth product
to satisfy high performance system requirements.
The internal current sense amplifier permits the use of a low value current
sense resistor, minimizing power loss. It has inputs and outputs accessi-
ble to allow user-selection of gain-setting resistors, and is internally com-
pensated for a gain of 5 and above. The command voltage input is
buffered and provided for use as the reference for the current sense am-
plifier.
The output of the voltage amplifier (input to the current amplifier) is
clamped to 1 volt above the command voltage to serve as a current limit.
The gate output can be disabled by bringing the CAO/ENBL pin to below
0.8 volts.
FEATURES
10.3V - 20V Operating Range
Low Offset Voltage Amplifier
High Bandwidth Current and Voltage
Amplifiers
Low Offset Current Sense
Amplifier
Undervoltage Lockout
Trimmed 5 Volt Reference
Externally Programmable Oscillator
Charge Current
1.5A Peak Totem Pole Output
Available in 16-pin DIL or SOIC
Packages
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| UC28TRXS | 制造商:ST MICRO 功能描述:New |
| UC2901 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Isolated Feedback Generator |
| UC2901D | 功能描述:反饋回路功率控制器 Isolated Feedback Generator RoHS:否 參考電壓:1.3 V 輸出電流:100 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:SOIC-8 封裝:Tube 制造商:Texas Instruments |
| UC2901DG4 | 功能描述:反饋回路功率控制器 Isolated Feedback Generator RoHS:否 參考電壓:1.3 V 輸出電流:100 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:SOIC-8 封裝:Tube 制造商:Texas Instruments |
| UC2901DTR | 功能描述:反饋回路功率控制器 Isolated Feedback Generator RoHS:否 參考電壓:1.3 V 輸出電流:100 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:SOIC-8 封裝:Tube 制造商:Texas Instruments |
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