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參數(shù)資料
| 型號： | TPS65252RHDR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3.5 A SWITCHING REGULATOR, 2200 kHz SWITCHING FREQ-MAX, PQCC28 |
| 封裝： | 5 x 5 MM, GREEN, PLASTIC, VQFN-28 |
| 文件頁數(shù)： | 1/29頁 |
| 文件大小： | 949K |
| 代理商： | TPS65252RHDR |
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OSC
Vin
INTERNAL
VOLTAGE RAILS
V3V
V7V
Vout BUCK1
LX1
FB1
CMP1
BST1
BUCK1
Vout BUCK2
LX2
FB2
CMP2
BST2
BUCK2
SS2
EN1
from enable logic
SS1
VIN1
VIN2
Rlim1
ROSC
Light Load
Power Saving
Low_P
EN2
from enable logic
Rlim2
USB
USB Output
USB_VO
USB Input
Enable logic
USB over current
USB_nILIM
USB_EN
USB_VIN
PGOOD
rUSB
VPULL
SLVSAM1B
– DECEMBER 2010 – REVISED FEBRUARY 2011
4.5-V TO 16-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN DUAL BUCK
SWITCHER WITH INTEGRATED FET AND ONE USB SWITCH AND SVS
Check for Samples: TPS65252
1
FEATURES
APPLICATIONS
DTV
Wide Input Supply Voltage Range
(4.5 V - 16 V)
DSL Modems
Cable Modems
Output Range 0.8 to ~VIN - 1 V
Set Top Boxes
Fully Integrated Dual Buck,
Car DVD Players
3.5-A/2.5-A Maximum Current,
3-A/2-A Continuous Operation
Home Gateway and Access Point Networks
High Efficiency
Wireless Routers
Switching Frequency:
300 kHz - 2.2 MHz Set By External Resistor
External Enable/Sequencing Pins
Adjustable Cycle-By-Cycle Current Limit Set
By External Resistor
Soft Start Pins
Current Mode Control With Simple
Compensation Circuit
Power Good and Reset Generator
Low Power Mode Set By External Signal
One Current Adjustable USB Switch With Over
Current Protection
Supervisory Circuit
QFN Package, 28-Pin 5 mm x 5 mm RHD
DESCRIPTION/ORDERING INFORMATION
The TPS65252 features two synchronous wide input range high efficiency buck converters. The converters are
designed to simplify its application while giving the designer the option to optimize their usage according to the
target application.
The converters can operate in 5-, 9- or 12-V systems and have integrated power transistors. The output voltage
can be set externally using a resistor divider to any value between 0.8 V and the input supply minus 1 V. Each
converter features enable pin that allows a delayed start-up for sequencing purposes, soft start pin that allows
adjustable soft-start time by choosing the soft-start capacitor, and a current limit (RLIMx) pin that enables
designer to adjust current limit by selecting an external resistor and optimize the choice of inductor. The COMP
pin allows optimizing transient versus dc accuracy response with a simple RC compensation.
The switching frequency of the converters can be set with an external resistor connected to ROSC pin. The
switching regulators are designed to operate from 300 kHz to 2.2 MHz. The converters operate with 180
° phase
between then to minimize the input filter requirements.
TPS65252 also features a low power mode enabled by an external signal, which allows for a reduction on the
input power supplied to the system when the host processor is in stand-by (low activity) mode.
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.
2010–2011, 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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS65252RHDT | 功能描述:PMIC 解決方案 4.5-16V Inp w/ 2 BUCK CONVERTER RoHS:否 制造商:Texas Instruments 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| TPS65253EVM | 功能描述:電源管理IC開發(fā)工具 TPS65253 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS65253RHDR | 功能描述:PMIC 解決方案 4.5V-16Vin/2 Buck Converters RoHS:否 制造商:Texas Instruments 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| TPS65253RHDT | 功能描述:PMIC 解決方案 4.5V-16Vin/2 Buck Converters RoHS:否 制造商:Texas Instruments 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| TPS65257EVM | 功能描述:電源管理IC開發(fā)工具 TPS65257 EVAL MOD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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