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参数资料
| 型号： | TPS65230DCA |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO48 |
| 封装： | HTSSOP-48 |
| 文件页数： | 1/26页 |
| 文件大小： | 899K |
| 代理商： | TPS65230DCA |
1
FEATURES
APPLICATIONS
DESCRIPTION/ORDERING INFORMATION
www.ti.com.................................................................................................................................... SLVSA10A – SEPTEMBER 2009 – REVISED SEPTEMBER 2009
POWER MANAGEMENT IC FOR DIGITAL SET TOP BOXES
Supply Voltage Supervisor Circuit with Two
Monitor Inputs and Open Drain Output
Wide Input Supply Voltage Range
(10.8 V - 22 V)
Parallel I/O or I2C Control with User Selectable
Address
One Adjustable PWM Buck Controller
Advanced Fault Detection and Output Voltage
–
10.8-V - 22-V Input Voltage Range
Adjustment Options in I2C Mode
–
3.3-V - 6.1-V Output Voltage Range
Pull-Up Current Sources on Buck Enable Pins
–
500kHz switching frequency
for Accurate Start-Up Timing Control with
–
Type III Compensation
Preset Default
–
Programmable Current Limit
Over Current Protection on All Rails
Two Adjustable Step-Down Converter with
Thermal Shutdown to Protect Device During
Integrated Switching FETs:
Excessive Power Dissipation
–
4.75-V - 5.5-V Input
Thermally Enhanced Package for Efficient
–
0.9-V-3.3-V Output Voltage Range
Heat Management (48-pin HTSSOP)
–
3-A Output Current
–
1-MHz Switching Frequency
Digital Set Top Boxes
–
Voltage Scaling Option
xDSL & Cable Modems
–
Type III Compensation
DVD Players
Two 100-m, 0.5-A (TPS65230) 1-A (TPS65231)
Home Gateway and Access Point Networks
USB Switches with Over Current Protection
Wireless Routers
and Open-Drain Fault Pin
Early Supply Failure Flag (Open Drain Output)
is Set when Input Voltage Drops Below 9.3 V
Early Temperature Warning Flag (Open Drain
Output) is Set if Temperature Approaches
Shut-Down Threshold
The TPS652x provides one PWM buck controller, two adjustable, synchronous buck regulators, two independent
USB power switches and a supply voltage supervisor (SVS) to provide main power functions for satellite set top
boxes, xDSL and cable modem applications operating off a single 12- to 22-V supply.
The SMPS have integrated switching FETs for optimized power efficiency and reduced external component
count. Each USB switch provides up to 0.5-A (TPS65230) or 1-A (TPS65231) of current as required by
downstream USB devices. All power blocks have thermal and over current/short circuit protection.
The SVS provides two inputs for monitoring positive supply rails. The active-low open-drain output remains low
for at least 180 ms after all supply rails rise above their rising edge threshold. Threshold value for VMON1 input
is set for monitoring a 3.3-V rail without the need for additional external components. Threshold for VMON2 input
is set to 0.8 V and requires resistor dividers on the input to monitor any positive voltage in the system. The
nBOR/nHOT open-drain output is pulled low if the input supply drops below 9.3 V or the chip temperature
approaches the thermal shutdown limit. This allows the system processor to save critical data and shut down
gracefully before the supply fails.
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.
PRODUCTION DATA information is current as of publication date.
Copyright 2009, 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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| TPS65231A2DCA | 功能描述:PMIC 解决方案 Pwr Mgmt IC for Dig Set-Top Boxes RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
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| TPS65232A0RHA | 功能描述:PMIC 解决方案 Wide Inp Vltg PMU RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| TPS65232A0RHAR | 功能描述:PMIC 解决方案 Wide Inp Vltg PMU RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| TPS65232A2DCA | 功能描述:PMIC 解决方案 Wide Inp Vltg PMU RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
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