- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄378130 > REG104GA-2.7G4 (Texas Instruments, Inc.) DMOS 1A Low-Dropout Regulator PDF資料下載
參數(shù)資料
| 型號： | REG104GA-2.7G4 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | DMOS 1A Low-Dropout Regulator |
| 中文描述： | DMOS的1A低壓差穩(wěn)壓器 |
| 文件頁數(shù)： | 8/22頁 |
| 文件大?。?/td> | 439K |
| 代理商： | REG104GA-2.7G4 |
SBVS025G
REG104
8
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 regulation with
near constant ground pin current (largely independent 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
μ
F
C
0.01
μ
F
Gnd
NR
In
Out
Optional
FIGURE 2. Adjustable Voltage Circuit for REG104A.
V
OUT
= (1 + R
1
/R
2
)
1.295V
Pin numbers for SOT-223 package.
REG104
V
IN
0.1
μ
F
3
1
Gnd
V
OUT
R
1
C
0.01
μ
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)
1.295
2.5
R
1
(
)
(1)
Short
12.1k
1.21k
16.9k
1.69k
20k
2.0k
37.4k
3.74k
R
2
(
)
(1)
Open
13k
1.3k
13k
1.3k
13k
1.3k
13k
1.3k
3
3.3
5
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 regulator
stability. The REG104 will accept any output capacitor type
less than 1
μ
F. For capacitance values larger than 1
μ
F the
effective ESR should be greater than 0.1
. This minimum
ESR value includes parasitics such as printed circuit board
traces, solder joints, and sockets. A minimum 0.1
μ
F low ESR
capacitor connected to the input supply voltage is recom-
mended.
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
μ
A.
When not used, the Enable pin may be connected to V
IN
.
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PDF資料 |
PDF描述 |
|---|---|
| REG104FA-2.7KTTT | DMOS 1A Low-Dropout Regulator |
| REG113EA285250G4 | DMOS 400mA Low-Dropout Regulator |
| REG113EA2852K5G4 | DMOS 400mA Low-Dropout Regulator |
| REG113NA-3.33K | DMOS 400mA Low-Dropout Regulator |
| REG711EA-2.5 | 50mA SWITCHED-CAP DC/DC CONVERTER |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| REG104GA-3 | 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 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| REG104GA-3.3 | 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 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| REG104GA-3.3 | 制造商:Texas Instruments 功能描述:LINEAR VOLTAGE REGULATOR IC |
| REG104GA-3.3/2K5 | 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 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| REG104GA-3.3/2K5G4 | 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 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
發(fā)布緊急采購，3分鐘左右您將得到回復。