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參數(shù)資料
| 型號(hào)： | ISL72991 |
| 英文描述： | Radiation Hardened Negative Low Dropout Adjustable Voltage Regulator |
| 中文描述： | 輻射加固負(fù)低壓差可調(diào)穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 2/3頁(yè) |
| 文件大?。?/td> | 553K |
| 代理商： | ISL72991 |
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
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
described by the following equation: I
The graph below shows the relationship between I
the output current limit threshold, I
ADJ
x R2).
LIM
pin is
+2400).
LIM
=1V/(R
CL
LIM
and
OUT_LIM
.
Capacitor Selection
An input capacitor is required if the regulator is located more
than 6 inches from power supply filter capacitors. A 10uF
solid tantalum capacitor is recommended.
An output capacitor of at least 10uF 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.
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
ISL72291RH
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| ISL72991QF | 制造商:Intersil Corporation 功能描述:NEG LDO REGULATOR - Rail/Tube |
| ISL72991RH | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Radiation Hardened Negative Low Dropout Adjustable Voltage Regulator |
| ISL72991RHF | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Radiation Hardened Negative Low Dropout Adjustable Voltage Regulator |
| ISL72991RHF/PROTO | 制造商:Intersil Corporation 功能描述:REG LDO LIN ADJ NEG -2.25V TO -26V 1A 28PIN CFLATPACK - Bulk |
| ISL72991RHQF | 制造商:Intersil Corporation 功能描述:REG LDO LIN ADJ NEG -2.25V TO -26V 1A 28PIN CFLATPACK - Bulk |
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