參數(shù)資料
型號(hào)： PTH04T241WAZT
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源模塊
英文描述： 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
封裝： ROHS COMPLIANT, PLASTIC, DIP-11
文件頁(yè)數(shù)： 38/38頁(yè)
文件大?。?/td> 964K
代理商： PTH04T241WAZT
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PTH04T240/241W
(Top View)
www.ti.com ...................................................................................................................................................... SLTS276D – OCTOBER 2006 – REVISED JULY 2009
TERMINAL FUNCTIONS
TERMINAL
DESCRIPTION
NAME
NO.
VI
2
The positive input voltage power node to the module, which is referenced to common GND.
VO
5
The regulated positive power output with respect to GND.
This is the common ground connection for the VI and VO power connections. It is also the 0 Vdc reference for the
GND
3, 4
control inputs.
The Inhibit pin is an open-collector/drain, negative logic input that is referenced to GND. Applying a low level
ground signal to this input disables the module’s output and turns off the output voltage. When the Inhibit control
is active, the input current drawn by the regulator is significantly reduced. If the Inhibit pin is left open-circuit, the
Inhibit(1) and
module produces an output whenever a valid input source is applied.
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UVLO
This pin is also used for input undervoltage lockout (UVLO) programming. Connecting a resistor from this pin to
GND (pin 3) allows the ON threshold of the UVLO to be adjusted higher than the default value. For more
information, see the Application Information section.
A 0.05 W 1% resistor must be connected between this pin and pin7 (–Sense), close to the module to set the
output voltage to a value higher than 0.69V. The temperature stability of the resistor should be 100 ppm/°C (or
better). The setpoint range for the output voltage is from 0.69V to 3.6V. If left open circuit, the output voltage will
Vo Adjust
8
default to its lowest value. For further information, on output voltage adjustment see the related application note.
The specification table gives the preferred resistor values for a number of standard output voltages.
The sense input allows the regulation circuit to compensate for voltage drop between the module and the load.
+ Sense
6
For optimal voltage accuracy, +Sense must be connected to VO, very close to the load.
The sense input allows the regulation circuit to compensate for voltage drop between the module and the load.
– Sense
7
For optimal voltage accuracy –Sense must be connected to GND (pin4) very close to the module (within 10cm).
This is an analog control input that enables the output voltage to follow an external voltage. This pin becomes
active typically 20 ms after the input voltage has been applied, and allows direct control of the output voltage
from 0 V up to the nominal set-point voltage. Within this range the module's output voltage follows the voltage at
Track
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the Track pin on a volt-for-volt basis. When the control voltage is raised above this range, the module regulates
at its set-point voltage. The feature allows the output voltage to rise simultaneously with other modules powered
from the same input bus. If unused, this input should be connected to VI.
NOTE: Due to the undervoltage lockout feature, the output of the module cannot follow its own input voltage
during power up. For more information, see the related application note.
This input pin adjusts the transient response of the regulator. To activate the TurboTrans feature, a 1%, 50mW
resistor must be connected between this pin and pin 6 (+Sense) very close to the module. For a given value of
output capacitance, a reduction in peak output voltage deviation is achieved by utililizing this feature. If unused,
TurboTrans
9
this pin must be left open-circuit. The resistance requirement can be selected from the TurboTrans resistor
table in the Application Information section. External capacitance must never be connected to this pin unless the
TurboTrans resistor value is a short, 0
.
This input pin sychronizes the switching frequency of the module to an external clock frequency. The SmartSync
feature can be used to sychronize the switching fequency of multiple PTH04T240/241W modules, aiding EMI
SmartSync
1
noise suppression efforts. If unused, this pin should be connected to GND (pin3). For more information, please
review the Application Information section.
(1)
Denotes negative logic: Open = Normal operation, Ground = Function active
Copyright 2006–2009, Texas Instruments Incorporated
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Product Folder Link(s): PTH04T240W PTH04T241W
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PTH04T260W 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-A, 2.2-V to 5.5-V INPUT, NON-ISOLATED, WIDE-OUTPUT, ADJUSTABLE POWER MODULE WITH TurboTrans⑩
PTH04T260WAD 功能描述:DC/DC轉(zhuǎn)換器 3A 2.2V-5.5Vin Adj Pwr Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PTH04T260WAS 功能描述:DC/DC轉(zhuǎn)換器 3A 2.2V-5.5Vin Adj Pwr Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PTH04T260WAST 功能描述:DC/DC轉(zhuǎn)換器 3A 2.2V-5.5Vin Adj Pwr Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PTH04T260WAZ 功能描述:DC/DC轉(zhuǎn)換器 3A 2.2V-5.5Vin Adj Pwr Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
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