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UCC2750DWTR PDF预览

UCC2750DWTR

更新时间: 2024-11-18 21:11:11
品牌 Logo 应用领域
德州仪器 - TI 电信信息通信管理光电二极管电信集成电路
页数 文件大小 规格书
16页 996K
描述
SPECIALTY TELECOM CIRCUIT, PDSO28, GREEN, PLASTIC, SOIC-28

UCC2750DWTR 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:SOIC
包装说明:SOP,针数:28
Reach Compliance Code:unknownHTS代码:8542.39.00.01
风险等级:5.11JESD-30 代码:R-PDSO-G28
长度:17.9 mm功能数量:1
端子数量:28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:SOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified座面最大高度:2.65 mm
标称供电电压:5 V表面贴装:YES
技术:BICMOS电信集成电路类型:TELECOM CIRCUIT
温度等级:INDUSTRIAL端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:7.5 mm
Base Number Matches:1

UCC2750DWTR 数据手册

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application  
INFO  
UCC2750  
UCC3750  
available  
Source Ringer Controller  
FEATURES  
DESCRIPTION  
Provides Control for Flyback Based  
Four Quadrant Amplifier Topology  
The UCC3750 Source Ringer Controller provides a complete control and  
drive solution for a four quadrant flyback-based ring generator circuit. The  
IC controls a primary side switch, which is modulated when power transfer  
is taking place from input to output. It also controls two secondary  
switches which act as synchronous rectifier switches during positive  
power flow. These switches are pulse-width-modulated when the power is  
being delivered back to the source.  
Onboard Sine Wave Reference with  
Low THD  
Selectable Ringing Frequency for  
Different Phone Systems (20Hz,  
25Hz and 50Hz)  
The UCC3750 has an onboard sine wave reference with programmable  
frequencies of 20Hz, 25Hz and 50Hz. The reference is derived from a  
high-frequency (32kHz) crystal connected externally. Two fre-  
quency-select pins control an internal divider to give a sinusoidal output at  
20Hz, 25Hz or 50Hz. The ring generator can also be used at other fre-  
quencies by supplying externally generated sine-waves to the chip or by  
clocking the crystal input at a fixed multiple of the desired frequency.  
Programmable Output Amplitude and  
DC Offset  
DC Current Limiting for Short Circuit  
Protection  
Secondary Side Voltage Mode  
Control  
Other features included in the UCC3750 are programmable DC current  
limit (with buffer amplifier), a charge-pump circuit for gate drive voltage, in-  
ternal 3V and 7.5V references, a triangular clock oscillator and a buffer  
amplifier for adding programmable DC offset to the output voltage. The  
UCC3750 also provides an uncommitted amplifier (AMP) for other signal  
processing requirements.  
Operates from a Single 5V Supply  
TYPICAL APPLICATION  
0V  
V
–48V  
OUT  
V
IN  
48V  
V
OUT  
28  
26  
27  
25  
GD2 GD3 ENBL REF  
VCP  
4
6
2
GD1  
UCC3750  
VS 2  
24 RT  
23 CT  
VS 1  
5
7
1
RGOOD  
VDD  
5V  
11 OUTDC  
OUT2 15  
12 NEGDC  
13 AMP OUT  
14 AMP IN  
22 XTAL1  
21 XTAL2  
20 FS0  
NEG2 18  
OUT1 16  
NEG1 17  
SINFLT 10  
19 FS1  
SINREF  
9
SWRLY  
8
GND  
3
C17  
0.047µF  
UDG-99073  
SLUS172C - DECEMBER 1999 - REVISED AUGUST 2005  

UCC2750DWTR 替代型号

型号 品牌 替代类型 描述 数据表
UCC3750DWTRG4 TI

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Source Ringer Controller
UCC3750DWTR TI

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