CW574L-T90-R [UTC]
33V COLOR TV VOLTAGE REGULATOR; 33V彩电稳压器
| 型号： | CW574L-T90-R |
| 厂家： | 
Unisonic Technologies |
| 描述： | 33V COLOR TV VOLTAGE REGULATOR |
| 文件： | 总3页 (文件大小：111K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
CW574
LINEAR INTEGRATED CIRCUIT
33V COLOR TV VOLTAGE
REGULATOR
DESCRIPTION
The UTC CW574 is a parallel voltage regulator which
provides stable harmonious voltage for high frequency tuner
head of color TV.
FEATURES
* Low temperature coefficient
* Low dynamic resister
* Typical voltage: 33V
ORDERING INFORMATION
Ordering Number
Lead Free
Package
Packing
Halogen Free
CW574G-T90-B
CW574G-T90-K
CW574G-T90-R
CW574L-T90-B
TO-92-2
TO-92-2
TO-92-2
Tape Box
Bulk
CW574L-T90-K
CW574L-T90-R
Tape Reel
BLOCK DIAGRAM
1
2
www.unisonic.com.tw
Copyright © 2011 Unisonic Technologies Co., Ltd
1 of 3
QW-R111-008.D
CW574
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (TA=25°C)
PARAMETER
SYMBOL
IZ
RATINGS
10
UNIT
mA
mW
°C
Stable Current
Power Dissipation
Operating Temperature
Storage Temperature
PD
200
TOPR
TSTG
-20 ~ +75
-40 ~ +125
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
ELECTRICAL CHARACTERISTICS (TA=25°C)
PARAMETER
SYMBOL
TEST CONDITIONS
IZ=5mA
MIN
31
TYP
33
MAX
35
UNIT
V
Stable Voltage
VZ
RZ
Dynamic Resister
IZ=5mA,IAC=0.5mA,f=1kHz
10
25
Ω
Stable Current and
Temperature Characteristics
ΔVZ
IZ=5mA, TA= -20~75°C
-1.0
1.0
mV/°C
UNISONIC TECHNOLOGIES CO., LTD
2 of 3
QW-R111-008.D
www.unisonic.com.tw
CW574
LINEAR INTEGRATED CIRCUIT
APPLICATION CIRCUIT
Rs
115V
Vi
TUNER CONTROL
A
R2
R10
R3
2
1
AGC
Bu
BV
33V
BL
AFT
VT
+B
R11
R12
IE
The UTC CW574 is a parallel voltage regulator which provides stable harmonious voltage for high frequency tuner
head of color TV.
The main power 115V goes through Rs resister to position 2 of UTC CW574 then the position A with 33V
provides stable voltage for control circuit of high frequency tuner. The circuit from R3 to R10 is potential meter for
tuning, according to different channels to change contact positions; to provide corresponding voltage to tuner; and to
control the capacity of varicap diode in order to have high frequency tuner into proper channel.
The voltage range of UTC CW574 is required to cover necessary frequency range, and main issue of UTC
CW574 is its reliable voltage stability which avoids unexpected frequency offset; therefore, the circuit of UTC CW574
contains temperature compensation to have lowermost temperature coefficient.
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
3 of 3
QW-R111-008.D
www.unisonic.com.tw
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