- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄372063 > RHFL4913S30-04V (意法半導體) THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS PDF資料下載
參數(shù)資料
| 型號： | RHFL4913S30-04V |
| 廠商： | 意法半導體 |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS |
| 中文描述： | 三端固定電壓調(diào)節(jié)器 |
| 文件頁數(shù)： | 6/11頁 |
| 文件大小： | 185K |
| 代理商： | RHFL4913S30-04V |
RHFL4913 FIXED VERSION
6/11
Alternate to
RHFL4913 Fixed (& custom) Voltages replace all 3-terminal Industry Devices, providing essential benefits
- Lower Drop-Out
- High radiation performance
- Better SVR
- Saving the high stability external setting resistors.
APPLICATION INFORMATION
The RHFL4913 Fixed Voltage is functional as soon as V
I
-V
O
voltage difference is slightly above the power
element saturation voltage. A minimum 0.5mA I
O
ensures perfect “no-load” regulation.
All available V
I
pins must always be externally interconnected, same thing for all available V
O
pins,
otherwise Device stability and reliability cannot be granted. All NC pins can be connected to Ground. The
INHIBIT function switches off the output current in an electronic way, that is very quickly. According to
Lenz’s Law, external circuitry reacts with –LdI/dt terms which can be of high amplitude in case some
series-inductance exists. The effect would be a large transient voltage developed on both Device
terminals. It is necessary to protect the Device with Schottky diodes preventing negative voltage
excursions. In the worst case, a 14V Zener diode shall protect the Device Input.
The Device has been designed for high stability and low drop out operation: Minimum 1μF input and
output tantalum capacitors are therefore mandatory. Capacitor ESR range is from 0.5
to over 20
.
Such range turns out to be useful when ESR increases at low temperature. When large transient currents
are expected, larger value capacitors are necessary.
In case of high current operation with expected short-circuit events, caution must be considered relatively
to capacitors. They must be connected as close as possible to device terminals. As some tantalum
capacitors may permanently fail when submitted to high charge-up surge currents, it is recommended to
decouple them with 470nF polyester capacitors.
Being RHFL4913 Fixed Voltage manufactured with very high speed bipolar technology 6GHz f
T
transistors), the PCB lay-out must be performed with extreme care, very low inductance, low mutually
coupling lines, otherwise high frequency parasitic signals may be picked-up by the Device resulting into
self-oscillation. User’s benefit is a SVR performance extended to far higher frequencies.
REMOTE SENSING OPERATION
In case the Load is located far from the regulator, it is recommended to comply with the scheme below. To
obtain the best regulation, it is in addition essential to care about:
- The wire connecting R2 to the Load end must not be crossed by the Load current (Kelvin sense).
The noise captured by the wires between the Load and the chip could bring a noisy output voltage. In case
this happens, it is recommended that shielded cables are used for these connections. The external wrap
must be used for connecting the ground of the chip with the Load Ground. It is also recommended to place
1uF tantalum capacitors between Output and Ground close to the device and another next to the Load.
相關PDF資料 |
PDF描述 |
|---|---|
| RHFL4913S50-03V | THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS |
| RHFL4913ESY2505V | THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS |
| RHFL4913ESY2506V | THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS |
| RHFL4913ESY3005V | THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS |
| RHFL4913ESY3006V | THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| RHFL4913S33-03V | 制造商:STMicroelectronics 功能描述:VREG - Bulk 制造商:STMicroelectronics 功能描述:3AMP OUTPUT - Bulk |
| RHFL4913S33-04V | 制造商:STMicroelectronics 功能描述:VREG - Bulk 制造商:STMicroelectronics 功能描述:3AMP OUTPUT - Bulk |
| RHFL4913S331 | 制造商:STMicroelectronics 功能描述:LDO REG 3.3V 3A 3SMD - Bulk |
| RHFL4913S332 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Rad-hard positive fixed voltage regulator |
| RHFL4913S50-03V | 制造商:STMicroelectronics 功能描述:VREG - Bulk 制造商:STMicroelectronics 功能描述:LDO REG 5V 3A 3SMD - Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復。