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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： | 43/47頁 |
| 文件大?。?/td> | 2435K |
| 代理商： | TPS54040DGQ |
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DEVICE INFORMATION
PIN CONFIGURATION
1
2
3
4
5
6
7
9
8
10
Thermal
Pad
(11)
BOOT
VIN
EN
PH
GND
COMP
VSENSE
PWRGD
SS/TR
RT/CLK
MSOP10
(TOP VIEW)
www.ti.com................................................................................................................................................................................................... SLVS918 – MARCH 2009
PIN FUNCTIONS
PIN
I/O
DESCRIPTION
NAME
NO.
A bootstrap capacitor is required between BOOT and PH. If the voltage on this capacitor is below the
BOOT
1
O
minimum required by the output device, the output is forced to switch off until the capacitor is refreshed.
Error amplifier output, and input to the output switch current comparator. Connect frequency compensation
COMP
8
O
components to this pin.
Enable pin, internal pull-up current source. Pull below 1.2V to disable. Float to enable. Adjust the input
EN
3
I
undervoltage lockout with two resistors.
GND
9
–
Ground
PH
10
I
The source of the internal high-side power MOSFET.
POWERPAD
11
–
GND pin must be electrically connected to the exposed pad on the printed circuit board for proper operation.
An open drain output, asserts low if output voltage is low due to thermal shutdown, dropout, over-voltage or
PWRGD
6
O
EN shut down.
Resistor Timing and External Clock. An internal amplifier holds this pin at a fixed voltage when using an
external resistor to ground to set the switching frequency. If the pin is pulled above the PLL upper threshold,
RT/CLK
5
I
a mode change occurs and the pin becomes a synchronization input. The internal amplifier is disabled and
the pin is a high impedance clock input to the internal PLL. If clocking edges stop, the internal amplifier is
re-enabled and the mode returns to a resistor set function.
Slow-start and Tracking. An external capacitor connected to this pin sets the output rise time. Since the
SS/TR
4
I
voltage on this pin overrides the internal reference, it can be used for tracking and sequencing.
VIN
2
I
Input supply voltage, 3.5 V to 42 V.
VSENSE
7
I
Inverting node of the transconductance ( gm) error amplifier.
Copyright 2009, Texas Instruments Incorporated
5
Product Folder Link(s): TPS54040
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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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