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參數(shù)資料
| 型號(hào)： | UCC3830-4 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 5-Bit Microprocessor Power Supply Controller |
| 中文描述： | 5位微處理器電源控制器 |
| 文件頁(yè)數(shù)： | 1/10頁(yè) |
| 文件大?。?/td> | 419K |
| 代理商： | UCC3830-4 |
UCC3830-4/-5/-6
02/99
FEATURES
5-Bit Digital-to-Analog Converter
(DAC)
Supports 4-Bit and 5-Bit
Microprocessor VID Codes
Combined DAC/Voltage Monitor
and PWM Functions
1% DAC/Reference
Current Sharing
100kHz, 200kHz, 400kHz
Oscillator Frequency Options
Foldback Current Limiting
Overvoltage and Undervoltage
Fault Windows
Undervoltage Lockout
4
Totem Pole Output
Chip Disable Function
5-Bit Microprocessor Power Supply Controller
BLOCK DIAGRAM
UDG-96188-2
DESCRIPTION
The UCC3830-4/-5/-6 is a fully integrated single chip solution ideal for power-
ing high performance microprocessors. The chip includes an average current
mode PWM controller, has a fully integrated 5-Bit DAC, and includes an
on-board precision reference and voltage monitor circuitry. The UCC3830-x
converts 5VDC to an adjustable output, ranging from 3.5VDC down to 1.8VDC
with 1% DC system accuracy (see Table 1). The UCC3830-x fully supports
Intel’s 4-bit Pentium Pro and 5-bit Pentium II VID codes.
The accuracy of the DAC/reference combination is 1%. The overvoltage and
undervoltage comparators monitor the system output voltage and indicate
when it rises above or falls below its programmed value by more than 8.5%. A
second overvoltage protection comparator pulls the current amplifier output
voltage low to force zero duty cycle when the system output voltage exceeds
its designed value by more than 17.5%. This comparator also terminates the
cycle. Undervoltage lockout circuitry assures the correct logic states at the
outputs during powerup and powerdown. The gate output can be disabled by
bringing the CAO/ENBL pin to below 0.8V.
(continued)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UCC3830-5 | 5-Bit Microprocessor Power Supply Controller |
| UCC3830-6 | 5-Bit Microprocessor Power Supply Controller |
| UCC3830-x | 5-Bit Microprocessor Power Supply Controller |
| UCC3830DAC-4 | 5-Bit Microprocessor Power Supply Controller |
| UCC3830DAC-5 | 5-Bit Microprocessor Power Supply Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UCC3830-5 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:5-Bit Microprocessor Power Supply Controller |
| UCC3830-6 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:5-Bit Microprocessor Power Supply Controller |
| UCC3830DAC/PWM-4 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:5-Bit Microprocessor Power Supply Controller |
| UCC3830DAC/PWM-5 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:5-Bit Microprocessor Power Supply Controller |
| UCC3830DAC/PWM-6 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:5-Bit Microprocessor Power Supply Controller |
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