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參數(shù)資料
| 型號(hào)： | UCC2752DTR |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Very low drop voltage regulators with inhibit |
| 中文描述： | 電話鈴聲 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大?。?/td> | 103K |
| 代理商： | UCC2752DTR |
UCC2751
UCC3751
DESCRIPTION
The UCC3751 controller is designed for driving a power stage that gener-
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.
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.
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.
Single Line Ring Generator Controller
FEATURES
Novel Topology for Low-Cost, Efficient
Generation of Ring Voltage
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
Primary Current Limiting to turn Power
Stage off under Fault Conditions
Operates from a Single 12V Supply
APRIL 1999 - REVISED AUGUST 2000 - SLUS267B
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1
10
15
4
ENABLE
VDD
DELAY
XTAL2
6
OHD
2
RINGEN
12
DRVS
9
VS12
5
11
13
DRV1
DCLIM
DRV2
16
XTAL1
8
FS1
7
FS0
14
PGND
3
GND
C
BYP2
SAMPLING
CIRCUIT
C
F
AC SIGNAL
V
OUT
V
1
C
R2
12V
C
DC
D1
DC SIGNAL
Q1
L
IN
V
IN
12V
T1
L
R
L
R
N:1
Q2
R
SENSE
UCC3751
3.579545MHz
C
R1
C
BYP1
TYPICAL APPLICATIONS CIRCUIT
UDG-98047
The circuits described in this datasheet are covered under US Patent #5,663,878 and other patents pending.
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相關(guān)代理商/技術(shù)參數(shù) |
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| UCC2752N | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telephone Ringer |
| UCC27531D | 功能描述:IC GATE DRIVER FET/IGBT 8SOIC 制造商:texas instruments 系列:- 包裝:管件 零件狀態(tài):有效 驅(qū)動(dòng)配置:高壓側(cè)或低壓側(cè) 通道類型:單路 驅(qū)動(dòng)器數(shù):1 柵極類型:IGBT，N 溝道 MOSFET 電壓 - 電源:10 V ~ 32 V 邏輯電壓?- VIL，VIH:1.2V，2.2V 電流 - 峰值輸出（灌入，拉出）:2.5A，5A 輸入類型:非反相 高壓側(cè)電壓 - 最大值（自舉）:- 上升/下降時(shí)間（典型值）:15ns，7ns 工作溫度:-40°C ~ 140°C（TJ） 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商器件封裝:8-SOIC 標(biāo)準(zhǔn)包裝:75 |
| UCC27531DBV | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.5-A and 5-A, 35-VMAX VDD FET and IGBT Single-Gate Driver |
| UCC27531DBVR | 功能描述:功率驅(qū)動(dòng)器IC 2.5-5A 35VMX VDD FET & IGBT Sgl Gate Dvr RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| UCC27531DBVT | 功能描述:功率驅(qū)動(dòng)器IC 2.5-5A 35VMX VDD FET & IGBT Sgl Gate Dvr RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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