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參數資料
| 型號： | TPS54040DGQ |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 0.5 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | PLASTIC, MSOP-10 |
| 文件頁數： | 1/47頁 |
| 文件大小： | 2435K |
| 代理商： | TPS54040DGQ |
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1
FEATURES
APPLICATIONS
DESCRIPTION
EFFICIENCY
vs
LOADCURRENT
0
10
20
30
40
50
60
70
80
0
0.1
0.2
0.3
0.4
LoadCurrent- A
Efficiency-%
100
90
0.5
V =12V,
V =5.0V,
f
=700kHz
I
O
sw
PH
VIN
GND
BOOT
VSENSE
COMP
TPS54040
EN
RT /CLK
SS /TR
PWRGD
www.ti.com................................................................................................................................................................................................... SLVS918 – MARCH 2009
0.5A, 42V STEP DOWN
SWIFT DC/DC CONVERTER WITH ECO-MODE
0.8-V Internal Voltage Reference
2
3.5V to 42V Input Voltage Range
MSOP10 Package With PowerPAD
200-m High-Side MOSFET
Supported by SwitcherPro Software Tool
High Efficiency at Light Loads with a Pulse
Skipping Eco-Mode
For SWIFT Documentation, See the TI
116A Operating Quiescent Current
Website at http://www.ti.com/swift
1.3A Shutdown Current
100kHz to 2.5MHz Switching Frequency
Synchronizes to External Clock
12-V and 24-V Industrial and Commercial Low
Adjustable Slow Start/Sequencing
Power Systems
Aftermarket Auto Accessories: Video, GPS,
UV and OV Power Good Output
Entertainment
Adjustable UVLO Voltage and Hysteresis
The TPS54040 device is a 42V, 0.5A, step down regulator with an integrated high side MOSFET. Current mode
control provides simple external compensation and flexible component selection. A low ripple pulse skip mode
reduces the no load, regulated output supply current to 116
A. Using the enable pin, shutdown supply current is
reduced to 1.3
A, when the enable pin is low.
Under voltage lockout is internally set at 2.5V, but can be increased using the enable pin. The output voltage
startup ramp is controlled by the slow start pin that can also be configured for sequencing/tracking. An open
drain power good signal indicates the output is within 93% to 107% of its nominal voltage.
A wide switching frequency range allows efficiency and external component size to be optimized. Frequency fold
back and thermal shutdown protects the part during an overload condition.
The TPS54040 is available in 10 pin thermally enhanced MSOP Power Pad package.
SIMPLIFIED SCHEMATIC
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
Eco-Mode, PowerPAD, SwitcherPro, SWIFT are trademarks of Texas Instruments.
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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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS54040DGQ | 制造商:Texas Instruments 功能描述:Power Management IC 制造商:Texas Instruments 功能描述:IC, STEP-DOWN CONVERTER, MSOP-10 |
| TPS54040DGQR | 功能描述:直流/直流開關轉換器 3.5V-42Vin,0.5A Step Down SWIFT Convrtr RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| TPS54040EVM-456 | 功能描述:電源管理IC開發工具 0.5A,12-42V In SWIFT Cnvrtr 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 |
| TPS54040EVM-456 | 制造商:Texas Instruments 功能描述:EVALUATION MODULE FOR TPS54040 SWIFT(TM) |
| TPS54040-Q1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:0.5-A 42-V STEP-DOWN SWIFTa?￠ DC/DC CONVERTER WITH Eco-modea?￠ |
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