- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄225035 > REG104FA-2.7/500 2.7 V FIXED POSITIVE LDO REGULATOR, 0.46 V DROPOUT, PSSO5 PDF資料下載
參數(shù)資料
| 型號(hào)： | REG104FA-2.7/500 |
| 元件分類： | 固定正電壓?jiǎn)温份敵鯨DO穩(wěn)壓器 |
| 英文描述： | 2.7 V FIXED POSITIVE LDO REGULATOR, 0.46 V DROPOUT, PSSO5 |
| 封裝： | D2PAK-5 |
| 文件頁(yè)數(shù)： | 14/14頁(yè) |
| 文件大?。?/td> | 246K |
| 代理商： | REG104FA-2.7/500 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)當(dāng)前第14頁(yè)
REG104
9
SBVS025A
BASIC OPERATION
The REG104 series is a family of LDO (Low DropOut)
linear regulators. The family includes five fixed output
versions (2.5V to 5.0V) and an adjustable output version. An
internal DMOS power device provides low dropout regula-
tion with near constant ground pin current (largely indepen-
dent of load and dropout conditions) and very fast line and
load transient response. All versions include internal current
limit and thermal shutdown circuitry.
Figure 1 shows the basic circuit connections for the fixed
voltage models. Figure 2 gives the connections for the
adjustable output version (REG104A) and example resistor
values for some commonly used output voltages. Values for
other voltages can be calculated from the equation shown in
Figure 2.
FIGURE 1. Fixed Voltage Nominal Circuit for REG104.
REG104
Enable
V
OUT
C
OUT
V
IN
0.1
F
C
NR
0.01
F
Gnd
NR
In
Out
Optional
FIGURE 2. Adjustable Voltage Circuit for REG104A.
V
OUT = (1 + R1/R2) 1.295V
Pin numbers for SOT-223 package.
REG104
V
IN
0.1
F
3
1
Gnd
V
OUT
R
1
C
FB
0.01
F
C
OUT
Adj
R
2
I
ADJ
Load
2
4
5
Enable
To reduce current through divider, increase resistor
values (see table at right).
As the impedance of the resistor divider increases,
I
ADJ (~200nA) may introduce an error.
C
FB improves noise and transient response.
V
OUT (V)
R
1 ()
(1)
R
2 ()
(1)
1.295
Short
Open
2.5
12.1k
13k
1.21k
1.3k
3
16.9k
13k
1.69k
1.3k
3.3
20k
13k
2.0k
1.3k
5
37.4k
13k
3.74k
1.3k
NOTE: (1) Resistors are standard 1% values.
EXAMPLE RESISTOR VALUES
Optional
ENABLE
V
Z = 10V
175k
FIGURE 3. ENABLE Pin Equivalent Input Circuit.
None of the versions require an output capacitor for regula-
tor stability. The REG104 will accept any output capacitor
type less than 1
F. For capacitance values larger than 1F
the effective ESR should be greater than 0.1
. This mini-
mum ESR value includes parasitics such as printed circuit
board traces, solder joints, and sockets. A minimum 0.1
F
low ESR capacitor connected to the input supply voltage is
recommended.
ENABLE
The Enable pin allows the regulator to be turned on and off.
This pin is active HIGH and compatible with standard TTL-
CMOS levels. Inputs below 0.5V (max) turn the regulator
off and all circuitry is disabled. Under this condition ground-
pin current drops to approximately 0.5
A.
When not used, the Enable pin may be connected to VIN.
Internal to the part, the Enable pin is connected to an input
resistor-zener diode circuit, as shown in Figure 3, creating a
nonlinear input impedance.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| REG104GA-2.7G4 | 2.7 V FIXED POSITIVE LDO REGULATOR, 0.4 V DROPOUT, PDSO6 |
| REG1117FA | ADJUSTABLE POSITIVE LDO REGULATOR, 1.55 V DROPOUT, PSSO3 |
| REG1117TR | ADJUSTABLE POSITIVE LDO REGULATOR, 1.2 V DROPOUT, PDSO4 |
| REG1118-2.85/2K5G4 | 2.85 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PDSO4 |
| REG1118-2.85G4 | 2.85 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PDSO4 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| REG104FA-3 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| REG104FA-3.3 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| REG104FA-3.3/500 | 功能描述:低壓差穩(wěn)壓器 - LDO DMOS 1A LDO Reg RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| REG104FA-3.3/500G3 | 功能描述:低壓差穩(wěn)壓器 - LDO DMOS 1A LDO Reg RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| REG104FA-3.3/KTTT | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DMOS 1A Low-Dropout Regulator |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。