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| 型号： | TPS65171RHAR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 4 A SWITCHED CAPACITOR REGULATOR, 900 kHz SWITCHING FREQ-MAX, PQCC40 |
| 封装： | 6 X 6 MM, GREEN, PLASTIC, MO-220VJJD-2, VQFN-40 |
| 文件页数： | 1/46页 |
| 文件大小： | 3644K |
| 代理商： | TPS65171RHAR |
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www.ti.com
SLVSA22A – OCTOBER 2009 – REVISED JANUARY 2010
Compact LCD Bias Supply for TFT-LCD TV Panels
Check for Samples: TPS65171
1
FEATURES
APPLICATIONS
LCD TV Panel with ASG Technology
2
8.5V to 14.7V Input Voltage Range
VS Output Voltage Range up to 19V
DESCRIPTION
Boost Converter with 2.5A Switch Current
The TPS65171 offers a compact power supply
Step Down Converter with 1A Switch Current
solution to provide all voltages required by a LCD
and Adjustable Output 2.5V to 3.3V
panel for large TV panel applications running from a
750kHz Fixed Switching Frequency
12V supply rail. The device is optimized to support
Temperature Compensated Negative Supply
LCD technology using ASG gate drive circuits.
High Voltage Stress Test (HVS)
The device generates all voltage rails for the TFT
LCD bias (VS, VONE, VOFFE, VSS). In addition to that it
Adjustable Sequencing
includes a step-down converter (Vlogic) to provide the
Gate Drive Signal for Isolation Switch
logic voltage. By pulling the HVS pin high an
Short Circuit Protection
implemented
high
voltage
stress
test
feature
Internal Soft-Start
programs the boost converter output voltage Vs to
higher values. The boost converter operates at a
180° Phase Shift Between Buck and Boost
fixed switching frequency of 750kHz. The positive
P2P Short/Open Certified
charge pump is running from the boost converter and
Optimized Dual Layer PCB Layout
is regulated by an external transistor. A buck-boost
converter
provides
an
adjustable
temperature
Low EMI
dependent
negative
output
voltage
VOFFE. The
Undervoltage Lockout
negative output voltage VSS is regulated by a shunt
Thermal Shutdown
regulator.
Available in 6×6mm 40 Pin QFN Package
Safety features like overvoltage protection of the
buck-boost input voltage, the boost and buck output
TYPICAL APPLICATION
voltage, undervoltage lockout, short circuit protection
of VONE, VOFFE, and Vlogic are included as well as
thermal shutdown.
1
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.
2
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright 2009–2010, 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.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS65175ARSHR | 制造商:Texas Instruments 功能描述:LCD BIAS CHIP AND LEVEL SHIFTE 制造商:Texas Instruments 功能描述:IC BIAS PWR SUPP FOR LCD 56VQFN 制造商:Texas Instruments 功能描述:Fully Programmable LCD Bias IC |
| TPS65175CRSHR | 功能描述:LCD TV/Monitor PMIC 56-VQFN (7x7) 制造商:texas instruments 系列:- 包装:剪切带（CT） 零件状态:有效 应用:LCD 电视机/监控器 电流 - 电源:- 电压 - 电源:8.6 V ~ 14.7 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:56-VFQFN 裸露焊盘 供应商器件封装:56-VQFN（7x7） 标准包装:1 |
| TPS65175RSHR | 功能描述:LCD 驱动器 Fully Programmable LCD Bias IC RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube |
| TPS65176RHDR | 功能描述:其他电源管理 LCD BIAS IC FOR TV RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
| TPS65176RHDT | 功能描述:其他电源管理 LCD BIAS IC FOR TV RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
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