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UCC2751N

更新时间： 2024-02-16 04:16:50
品牌 Logo 应用领域
其他 - ETC 信息通信管理电话
页数 文件大小 规格书
8页 70K
描述
TELEPHONE RINGER|BICMOS|DIP|16PIN|PLASTIC

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中文翻译

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UCC2751N 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：DIP包装说明：DIP, DIP16,.3
针数：16Reach Compliance Code：not_compliant
HTS代码：8542.39.00.01风险等级：5.9
JESD-30 代码：R-PDIP-T16JESD-609代码：e0
长度：19.31 mm功能数量：1
端子数量：16最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：DIP封装等效代码：DIP16,.3
封装形状：RECTANGULAR封装形式：IN-LINE
峰值回流温度（摄氏度）：NOT SPECIFIED电源：12 V
认证状态：Not Qualified座面最大高度：5.08 mm
子类别：Telephone Circuits标称供电电压：12 V
表面贴装：NO技术：BICMOS
电信集成电路类型：TELECOM CIRCUIT温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn/Pb)端子形式：THROUGH-HOLE
端子节距：2.54 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：7.62 mm

UCC2751N 数据手册

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UCC2751  
UCC3751  
Single Line Ring Generator Controller  
FEATURES  
DESCRIPTION  
• Novel Topology for Low-Cost, Efficient The UCC3751 controller is designed for driving a power stage that gener-  
Generation of Ring Voltage  
ates low frequency, high voltage sinusoidal signals for telephone ringing  
applications. The controller and the power stage are most suitable for sin-  
gle line applications where low cost, high efficiency and minimum parts  
count are critical. In addition to providing the sinusoidal ringing signal, the  
controller and the power stage are designed to provide the required DC  
voltage across the output when the phone goes off-hook. The DC voltage is  
also added as the offset to the ringing signal. This feature eliminates the  
need to have a separate talk battery voltage power supply as well as relays  
and drivers to switch between the ringing voltage and the talk battery.  
• Provides DC Offset and “Talk Battery”  
Voltage for Off-Hook Conditions  
• Selectable 20, 25 and 50 Hz Ring  
Frequency  
• Secondary (AC) Current Limiting  
Allows Removal of AC Voltage under  
Off-Hook Conditions  
The UCC3751 directly drives primary side switches used to implement a  
push-pull resonant converter topology and transformer coupled sampling  
switches located on the secondary of the converter. For normal ring signal  
generation, the primary switching frequency and secondary sampling fre-  
quency are precisely offset from each other by the ringing frequency to pro-  
duce a high voltage low frequency alias signal at the output. The off-hook  
condition is detected by sensing the AC current and when AC limit is ex-  
ceeded, the sampling frequency is set to be equal to the primary switching  
frequency to produce a DC output.  
• Primary Current Limiting to turn Power  
Stage off under Fault Conditions  
• Operates from a Single 12V Supply  
The drive signal frequencies are derived from a high frequency (3579545  
Hz) crystal. The primary switching frequency is 89.488 kHz and the sam-  
pling frequency is 20, 25 or 50 Hz less depending on the status of fre-  
quency select pins FS0 and FS1.  
The circuits described in this datasheet are covered under US Patent #5,663,878 and other patents pending.  
TYPICAL APPLICATIONS CIRCUIT  
D1  
R
SENSE  
L
IN  
T1  
DC SIGNAL  
C
DC  
V
IN  
V
V
1
12V  
AC SIGNAL  
C
C
F
R2  
L
L
R
R
SAMPLING  
CIRCUIT  
OUT  
12V  
C
BYP1  
9
12  
2
6
4
C
R1  
N:1  
C
BYP2  
VS12  
11 DRV1  
DRVS  
RINGEN  
OHD  
VDD  
ENABLE 10  
Q1  
UCC3751  
5
DCLIM  
DELAY  
1
Q2  
13 DRV2  
GND  
XTAL2 15  
PGND  
14  
FS0  
7
FS1  
8
XTAL1  
16  
3
UDG-98047  
3.579545MHz  
APRIL 1999 - REVISED AUGUST 2000 - SLUS267B  
12345678

中文翻译

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