參數(shù)資料
型號(hào)： UCC3976TRPW
廠商： Texas Instruments, Inc.
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： Low consumption voltage and current controller for battery chargers and adaptors
中文描述： 鎮(zhèn)流器/背光控制器/驅(qū)動(dòng)器| TSSOP封裝| 8引腳|塑料
文件頁(yè)數(shù)： 9/28頁(yè)
文件大小： 433K
代理商： UCC3976TRPW
SLUS499A
–
NOVEMBER 2001
–
REVISED JANUARY 2002
9
www.ti.com
APPLICATION INFORMATION
PZT operation
Ceramic piezoelectric transformers were first proposed by C.A. Rosen in 1956. Unlike magnetic transformers
that rely on electromagnetic energy transfer, PZTs transfer electric potential to mechanical force as shown in
Figure 6. The electrical-to-mechanical conversion of energy is referred to as the
reverse piezoelectric effect
whereas the mechanical-to-electrical energy conversion is referred to as the
direct piezoelectric effect
.
+
ELECTRIC
POTENTIAL
ELECTRIC
POTENTIAL
MECHANICAL
FORCE
MECHANICAL
FORCE
+
UDG
–
01099
Figure 6. Piezoelectric Effect
Each manufacturer has a unique
recipe
of materials and structural layering that determine their PZT
’
s operating
characteristics. Common materials used to make PZTs include lead zirconate, lead titanate and lithium niobate.
Single layer PZTs are less costly and easier to manufacture, but have a lower voltage gain (typically 5 to 10 )
and may require a step-up magnetic transformer in order to operate the lamp. Multi-layered PZT designs are
more difficult to manufacture, but have a higher voltage gain (20 to 70) allowing a CCFL to be driven using
conventional off-the-shelf inductors.
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參數(shù)描述
UCC3977PW 功能描述:LCD 驅(qū)動(dòng)器 Multi-Topology Piezoelectric RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
UCC3977PWG4 功能描述:LCD 驅(qū)動(dòng)器 Multi-Topology Piezoelectric RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
UCC3977PWR 制造商:Texas Instruments 功能描述:
UCC40V680UF 制造商:United Chemi-Con 功能描述:AL040X768 85C 13X31
UCC500-30GM-IU-V1 B540 制造商:PEPPERL+FUCHS 功能描述:Sensor, Ultrasonic, Chem Resistant, 094792
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