- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383165 > ISL72991RHVF (INTERSIL CORP) Radiation Hardened Negative Low Dropout Adjustable Voltage Regulator PDF資料下載
參數(shù)資料
| 型號： | ISL72991RHVF |
| 廠商： | INTERSIL CORP |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Radiation Hardened Negative Low Dropout Adjustable Voltage Regulator |
| 中文描述： | 2.25 V-26 V ADJUSTABLE NEGATIVE LDO REGULATOR, 1 V DROPOUT, CDFP28 |
| 封裝： | CERAMIC, DFP-28 |
| 文件頁數(shù)： | 2/3頁 |
| 文件大小： | 210K |
| 代理商： | ISL72991RHVF |
2
Application Information
Typical User Application:
Output Voltage Programming
The output voltage of the regulator can be programmed with
two external resistors and is described by the following
equation: V
OUT
= V
REF
x (1+R2/R1) - (I
ADJ
x R2).
Output Current Limit Programming
The output current limit threshold of the regulator can be
programmed with a single external resistor connected from
I
LIM
to ground. The current flowing into the I
LIM
pin is
described by the following equation: I
LIM
= 1V/(R
CL
+ 2400).
The graph below shows the relationship between I
LIM
and
the output current limit threshold, I
OUT_LIM
.
Capacitor Selection
An input capacitor is required if the regulator is located more
than 6 inches from power supply filter capacitors. A 10μF
solid tantalum capacitor is recommended.
An output capacitor of at least 10μF must be used to insure
stability of the regulator. Additional capacitance may be
added as required to improve the dynamic response of the
regulator. Solid tantalum and/or ceramic capacitors are
recommended.
Loop Compensation
The output capacitor and ESR comprise a zero in the loop
transfer function that must be compensated with a pole to
insure loop stability in accordance with the following
equation: C
C
x R2 = C
OUT
x ESR. The compensating
capacitor should be a low ESR ceramic type.
Layout Guidelines
The stability of the regulator is sensitive to layout. It is
strongly recommended that a continuous copper ground
plane (1 ounce or greater) be used. In addition, component
lead lengths and interconnects should be minimized, but
should not exceed 1/2 inch. Finally, the return lead of the
compensation capacitor (C
C
) should be connected as close
as possible to the GND pin of the IC.
ISL72991RH
VIN
ILIM
SD
GND
VOUT
ADJ
VIN
C
R
R
C
R
C
VOUT
FIGURE 1. TYPICAL APPLICATION SCHEMATIC
FIGURE 2. I
OUT_LIM
vs I
LIM
I
LIM
(A)
I
O
ISL72991RH
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ISL72991RHVX | Radiation Hardened Negative Low Dropout Adjustable Voltage Regulator |
| ISL72991RHQF | Radiation Hardened Negative Low Dropout Adjustable Voltage Regulator |
| ISL72991RHF | Cabinet Rack Front Panel; External Height:15.75"; External Width:19"; Enclosure Color:White; Enclosure Material:Aluminum; Weight:3.62lb; Thickness:0.12" |
| ISL8009 | 1.5A Low Quiescent Current 1.6MHz High Efficiency Synchronous Buck Regulator(1.5A低靜態(tài)電流，1.6MHz高效同步降壓調(diào)節(jié)器) |
| ISL8010IUZ | Monolithic 600mA Step-Down Regulator with Low Quiescent Current |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL72991RHVX | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Radiation Hardened Negative Low Dropout Adjustable Voltage Regulator |
| ISL73096RH | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Radiation Hardened Ultra High Frequency NPN/PNP Transistor Arrays |
| ISL73096RH_09 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Radiation Hardened Ultra High Frequency NPN/PNP Transistor Arrays |
| ISL73096RHF/PROTO | 制造商:Intersil Corporation 功能描述:RH ULTRA HI-SPEED NPN-PNP TRANSISTOR ARRAY, FLATPACK,PROTOTY - Bulk |
| ISL73096RHVF | 制造商:Intersil Corporation 功能描述:RH ULTRA HI-SPEED NPN-PNP TRANSISTOR ARRAY , FLATPACK, CLASS - Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。