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參數(shù)資料
| 型號(hào)： | UCC2819PW |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | PROGRAMMABLE OUTPUT POWER FACTOR PREREGULATOR |
| 中文描述： | 可編程輸出功率因數(shù)前置穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 1/10頁(yè) |
| 文件大?。?/td> | 156K |
| 代理商： | UCC2819PW |
SLUS482B - APRIL 2001 REVISED DECEMBER 2004
1
www.ti.com
Controls Boost Preregulator to Near-Unity
Power Factor
World Wide Line Operation
Over-Voltage Protection
Accurate Power Limiting
Average Current Mode Control
Improved Noise Immunity
Improved Feed-Forward Line Regulation
Leading Edge Modulation
150-
μ
A Typical Start-Up Current
Low-Power BiCMOS Operation
10.8-V to 17-V Operation
Programmable Output Voltage (Tracking
Boost Topology)
description
The UCC2819/UCC3819 provides all the functions necessary for active power factor corrected preregulators.
The controller achieves near unity power factor by shaping the ac-input line current waveform to correspond
to that of the ac-input line voltage. Average current mode control maintains stable, low distortion sinusoidal line
current.
Designed in Texas Instrument’s BiCMOS process, the UCC3819 offers new features such as lower start-up
current, lower power dissipation, overvoltage protection, a shunt UVLO detect circuitry and a leading-edge
modulation technique to reduce ripple current in the bulk capacitor.
The UCC3819 allows the output voltage to be programmed by bringing out the error amplifier noninverting input.
Available in the 16-pin D, DW, N, and PW packages.
block diagram
UDG-01009
VREF
9
2
16
1
15
10
5
4
DRVOUT
GND
CAI
VCC
OVP/EN
VAOUT
1.9 V
PKLMT
7.5 V
REFERENCE
UVLO
10.2 V/9.7 V
VCC
3
OSCILLATOR
12
RT
14
CT
S
Q
R
PWM
LATCH
+
PWM
CAOUT
+
+
+
VOLTAGE
ERROR AMP
8.0 V
7
11
VSENSE
VFF
8
IAC
6
MOUT
MIRROR
2:1
X2
+
ENABLE
OVP
÷
X
X
MULT
OSC
CLK
CLK
CURRENT
AMP
+
0.33 V
ZERO POWER
R
+
13
VAI
Copyright
2004, Texas Instruments Incorporated
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
D, DW, N, and PW PACKAGES
(TOP VIEW)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
GND
PKLMT
CAOUT
CAI
MOUT
IAC
VAOUT
VFF
DRVOUT
VCC
CT
VAI
RT
VSENSE
OVP/EN
VREF
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UCC2819PWG4 | 功能描述:功率因數(shù)校正 IC BiCMOS Power Factor Preregulator RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| UCC2819PWTR | 功能描述:功率因數(shù)校正 IC BiCMOS Power Factor Preregulator RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| UCC2819PWTRG4 | 功能描述:功率因數(shù)校正 IC BiCMOS Power Factor Preregulator RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| UCC281-ADJ | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low Dropout 1 Ampere Linear Regulator Family |
| UCC281DP-3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Positive Fixed Voltage Regulator |
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