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參數資料
| 型號： | TPS51123ARGET |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING REGULATOR, PQCC24 |
| 封裝： | GREEN, PLASTIC, VQFN-24 |
| 文件頁數： | 1/36頁 |
| 文件大小： | 891K |
| 代理商： | TPS51123ARGET |
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SLUSAA6A
– APRIL 2011 – REVISED MAY 2011
Dual-Synchronous, Step-Down Controller with Out-of-Audio
Operation and 100-mA LDOs
for Notebook System Power
Check for Samples: TPS51123A
1
FEATURES
APPLICATIONS
2
Wide-Input Voltage Range: 5.5 V to 28 V
Notebook Computers
Output Voltage Range: 2 V to 5.5 V
I/O Supplies
Built-in 100-mA 5-V/3.3-V LDO with Switches
System Power Supplies
Built-in 1% 2-V Reference Output
DESCRIPTION
With/Without Out-of-Audio
Mode Selectable
The TPS51123A is a cost effective, dual-synchronous
Light-Load and PWM-Only Operation
buck controller targeted for notebook system power
Internal 1.6-ms Voltage Servo Soft-Start
supply solutions. It provides 5-V and 3.3-V LDOs and
Adaptive On-Time Control Architecture with
requires few external components. The TPS51123A
supports high-efficiency, fast transient responses and
Four Selectable Frequency Setting
provides
a
combined
power-good
signal.
4500 ppm/
°C RDS(on) Current Sensing
Out-of-Audio
mode light-load operation enables low
Built-In Output Discharge
acoustic
noise
at
much
higher
efficiency
than
Power Good Output
conventional
forced
PWM
operation.
Adaptive
on-time D-CAP
control provides convenient and
Built-in OVP/UVP/OCP
efficient operation. The part operates with supply
Thermal Shutdown (Non-latch)
input voltages ranging from 5.5 V to 28 V and
24-Pin QFN (RGE) Package
supports output voltages from 2 V to 5.5 V. The
TPS51123A is available in a 24-pin QFN package
and is specified from -40
°C to 85°C ambient
temperature range.
Table 1. Differences Between the TPS51123 and TPS51123A
TPS51123
TPS51123A
VREG5: at least 33
F
VREG5: 10
F or larger (X5R or X7R)
VREG3: at most 10
F
VREG3: 10
F or larger (X5R or X7R)
LDO Output Capacitance Requirement
(1
F acceptable at no load)
(1
F acceptable at no load)
VREF: 0.22
F to 1 F
VREF: 0.22
F to 1 F (X5R or X7R)
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
Out-of-Audio, D-CAP are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright
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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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS51123EVM-399 | 功能描述:電源管理IC開發工具 TPS51123EVM-399 Eval Mod RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS51123RGER | 功能描述:開關變換器、穩壓器與控制器 Dual-Synch,Step-Down Controller RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| TPS51123RGET | 功能描述:開關變換器、穩壓器與控制器 Dual-Synch,Step-Down Controller RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| TPS51123RGET | 制造商:Texas Instruments 功能描述:Controller IC |
| TPS51124 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL SYNCHRONOUS STEP-DOWN CONTROLLER FOR LOW VOLTAGE POWER RAILS |
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