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參數(shù)資料
| 型號： | GS-R51212S |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 31W Triple Output Step-Down Switching Regulator(31W三輸出降壓開關(guān)穩(wěn)壓器) |
| 中文描述： | 僅有31W三輸出降壓開關(guān)穩(wěn)壓器（僅有31W三輸出降壓開關(guān)穩(wěn)壓器） |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 87K |
| 代理商： | GS-R51212S |
5/8
USER NOTES
Input Voltage
The recommended operating maximum DC input
voltage is 40V inclusive of the ripple voltage. The
use of an external low ESR, high ripple current
capacitor located as close the module as possible
is recommended; suggestedvalue is 100
μ
F/50V.
Soft-start
To avoid heavy inrush current the output voltage
rise time is typically 10ms in any conditionof load.
Power Fail-Reset Circuit
The module include a voltage sensing circuit that
may be used to generate a power-on/power-off
reset signal for a microprocessorsystem.
The circuit sense the input supply voltageand the
output generatedvoltage Vo1(+5V) and willgener-
ate the required reset signal only when both the
sensed voltages have reached the required value
for correct systemoperation.
When both the supply voltage and the regulated
voltage are in the correct range the output Reset
signal is generatedaftera delaytime t
DR
of 100ms
typical.
A latch assures that if a spike is present on the
sensed voltage the delay time circuit discharges
completelybeforeinitializationof anewresetcycle.
Reset output has internal pull-up resistor of
10kOhmconnected to Vo +5V pin.
Maximum sink output current is 20mA at
V
RESET(sat)
= 200mV.
Fig. 1 and fig.2 showreset waveforms.
Power Fail ProgrammableInput
This pin is internally connected via a dividerto the
+Vin pin for Power Fail function.
The factory setting is for a value of 11V with 1V
hysteresis.
It is possible to programa different value of Power
Fail threshold by connecting a resistor (Rpf) be-
tween pin 3 (Power Fail Input) and pin 1 (GND
Input).The value of Rpfmust be calculatedaccord-
ing to the following formula:
R
pf
=
5.1
= (
k
)
V
pf
5.1
34
0.191
whereVpf isthe desiredvalueof Power Failthresh-
old voltage.
Exampe:Vpf = 24V (must not belower than 12V):
R
pf
=
5.1
=
14k
24
5.1
34
0.191
Figure 1 - Reset and Power Fail waveforms.
GS-R51212S/GS-R51515S
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| GS-R51X1XS | 500kHz and 1MHz High Efficiency 1.5A Switching Regulators; Package: SO; No of Pins: 8; Temperature Range: -40?°C to 85?°C |
| GS-T25-0500 | Analog IC |
| GS-T27-0600 | Analog IC |
| GS1140-1 | |
| GS1140-2 | |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| GS-R51515S | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 +5.1/+15/-15V Stp-Dn 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(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| GS-R51X1XS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:31 W TRIPLE OUTPUT STEP-DOWN SWITCHING REGULATORS |
| GSR53 | 制造商:EUROQUARTZ 制造商全稱:EUROQUARTZ limited 功能描述:5 x 3.2 x 1.2mm SMD Sine Wave VCXO |
| GSR57 | 制造商:EUROQUARTZ 制造商全稱:EUROQUARTZ limited 功能描述:7 x 5 x1.8mm SMD Sine Wave VCXO |
| GSR5-V | 制造商:Ferraz Shawmut 功能描述: |
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