參數(shù)資料
型號： TPS65145RGERG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 1.56 A SWITCHING REGULATOR, 2100 kHz SWITCHING FREQ-MAX, PQCC24
封裝： GREEN, PLASTIC, QFN-24
文件頁數(shù)： 1/31頁
文件大小： 1391K
代理商： TPS65145RGERG4
www.ti.com
FEATURES
DESCRIPTION
APPLICATIONS
Vin
V 1
U
o
p to 15 V / 400 mA
V 3
U
o
p to 30 V / 20 mA
V 2
U
o
p to 12 V / 20 mA
V 4
3.3
o
V
Vcom
Boost
Converter
Positive Charge
Pump
Negative
Charge Pump
Vcom Buffer
Linear Regulator
Controller
TPS6514x
2.7 V to 5.8 V
SLVS497C – SEPTEMBER 2003 – REVISED APRIL 2006
TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND POWER GOOD
2.7-V to 5.8-V Input Voltage Range
The TPS6514x series offers a compact and small
power supply solution to provide all three voltages
1.6-MHz Fixed Switching Frequency
required by thin film transistor (TFT) LCD displays.
3 Independent Adjustable Outputs
The auxiliary linear regulator controller can be used
Main Output up to 15 V With <1% Typical
to generate a 3.3-V logic power rail for systems
Output Voltage Accuracy
powered by a 5-V supply rail only.
Virtual Synchronous Converter Technology
The main output VO1 is a 1.6-MHz fixed frequency
Negative Regulated Charge Pump Driver VO2
PWM boost converter providing the source drive
voltage for the LCD display. The device is available
Positive Charge Pump Converter VO3
in two versions with different internal switch current
Auxiliary 3.3-V Linear Regulator Controller
limits to allow the use of a smaller external inductor
Internal Soft Start
when
lower
output
power
is
required.
The
TPS65140/41 has a typical switch current limit of 2.3
Internal Power-On Sequencing
A and the TPS65145 has a typical switch current
Fault Detection of all Outputs (TPS65140/45)
limit of 1.37 A. A fully integrated adjustable charge
No Fault Detection (TPS65141)
pump doubler/tripler provides the positive LCD gate
drive voltage. An externally adjustable negative
Thermal Shutdown
charge pump provides the negative gate drive
System Power Good
voltage.
Due
to
the
high
1.6-MHz
switching
Available in TSSOP-24 and QFN-24
frequency of the charge pumps, inexpensive and
PowerPAD Packages
small 220-nF capacitors can be used.
Additionally, the TPS6514x series has a system
power good output to indicate when all supply rails
TFT LCD Displays for Notebooks
are acceptable. For LCD panels powered by 5 V the
TFT LCD Displays for Monitors
device has a linear regulator controller using an
external transistor to provide a regulated 3.3 V
Portable DVD Players
output for the digital circuits. For maximum safety,
Tablet PCs
the TPS65140/45 goes into shutdown as soon as
Car Navigation Systems
one of the outputs is out of regulation. The device
Industrial Displays
can be enabled again by toggling the input or the
enable (EN) pin to GND. The TPS65141 does not
enter shutdown when one of its outputs is below its
power good threshold.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright 2003–2006, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
相關(guān)PDF資料
PDF描述
TPS65145PWPRG4 1.56 A SWITCHING REGULATOR, 2100 kHz SWITCHING FREQ-MAX, PDSO24
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TPS65140PWPG4 2.6 A SWITCHING REGULATOR, 2100 kHz SWITCHING FREQ-MAX, PDSO24
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS65146RGER 功能描述:LCD 驅(qū)動器 Compact LCD Bias IC for Notebook & Mon RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率: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
TPS65148RHBR 功能描述:LCD Gamma緩沖器 Compact TFT LCD Bias IC RoHS:否 制造商:Maxim Integrated 輸入補償電壓: 轉(zhuǎn)換速度: 電源電壓-最大:20 V 電源電壓-最小:9 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:TQFN-38 封裝:Tube
TPS65148RHBT 功能描述:LCD Gamma緩沖器 Compact TFT LCD Bias IC RoHS:否 制造商:Maxim Integrated 輸入補償電壓: 轉(zhuǎn)換速度: 電源電壓-最大:20 V 電源電壓-最小:9 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:TQFN-38 封裝:Tube
TPS65149RSHR 功能描述:其他電源管理 LCD Bias Solution RoHS:否 制造商:Texas Instruments 輸出電壓范圍: 輸出電流:4 mA 輸入電壓范圍:3 V to 3.6 V 輸入電流: 功率耗散: 工作溫度范圍:- 40 C to + 110 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel
TPS65150 制造商:TI 功能描述:a very compact and small power supply solution that provides all three voltages required by thin film transistor (TFT) LCD displays
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