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參數(shù)資料
| 型號： | LT1123 |
| 廠商： | Linear Technology Corporation |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| 中文描述： | 無電容，NMOS管，150mA的低壓差穩(wěn)壓器的反向電流保護 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 206K |
| 代理商： | LT1123 |
1
LT1123
Low Dropout
Regulator Driver
D
U
ESCRIPTIO
S
FEATURE
The LT1123 is a 3-pin bipolar device designed to be used
in conjunction with a discrete PNP power transistor to
form an inexpensive low dropout regulator. The LT1123
consists of a trimmed bandgap reference, error amplifier,
and a driver circuit capable of sinking up to 125mA from
the base of the external PNP pass transistor. The LT1123
is designed to provide a fixed output voltage of 5V.
The drive pin of the device can pull down to 2V at 125mA
(1.4V at 10mA). This allows a resistor to be used to reduce
the base drive available to the PNP and minimize the
power dissipation in the LT1123. The drive current of the
LT1123 is folded back as the feedback pin approaches
ground to further limit the available drive current under
short circuit conditions.
Total quiescent current for the LT1123 is only 700
μ
A. The
device is available in a low cost TO-92 package.
I
Extremely Low Dropout
I
Low Cost
I
Fixed 5V Output, Trimmed to
±
1%
I
700
μ
A Quiescent Current
I
3-Pin TO-92 Package
I
1mV Line Regulation
I
5mV Load Regulation
I
Thermal Limit
I
4A Output Current Guaranteed
U
A
O
PPLICATI
TYPICAL
5V Low Dropout Regulator
Dropout Voltage
+
620
10μF*
SEALED
LEAD ACID
5.4 – 7.2V
* REQUIRED IF DEVICE IS
MORE THAN 6" FROM MAIN
FILTER CAPACITOR
STABILITY)
OUTPUT = 5V/4A
10μF
LT1123 TA01
+
20
REQUIRED FOR STABILITY
MOTOROLA
MJE1123
DRIVE
LT1123
GND
FB
OUTPUT CURRENT (A)
0
D
0.3
0.4
0.5
4
LT1123 TA02
0.2
0.1
0
1
2
3
5
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1123_05 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Low Dropout Regulator Driver |
| LT1123CS8-2.85 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Interface IC |
| LT1123CST | 功能描述:IC REG CTRLR SGL 5V SOT223 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性晶體管驅(qū)動器 系列:- 產(chǎn)品培訓(xùn)模塊:More Information on LDOs 標準包裝:2,500 系列:- 類型:正，固定式 輸出數(shù):2 輸出電壓:2.8V，3.3V 電流 - 電源:12mA 輸入電壓:5 V ~ 22 V 工作溫度:0°C ~ 70°C 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) |
| LT1123CST#PBF | 功能描述:IC REG CTRLR SGL 5V SOT223 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性晶體管驅(qū)動器 系列:- 產(chǎn)品培訓(xùn)模塊:More Information on LDOs 標準包裝:2,500 系列:- 類型:正，固定式 輸出數(shù):2 輸出電壓:2.8V，3.3V 電流 - 電源:12mA 輸入電壓:5 V ~ 22 V 工作溫度:0°C ~ 70°C 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) |
| LT1123CST#TR | 功能描述:IC REG CTRLR SGL 5V SOT223 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性晶體管驅(qū)動器 系列:- 產(chǎn)品培訓(xùn)模塊:More Information on LDOs 標準包裝:2,500 系列:- 類型:正，固定式 輸出數(shù):2 輸出電壓:2.8V，3.3V 電流 - 電源:12mA 輸入電壓:5 V ~ 22 V 工作溫度:0°C ~ 70°C 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) |
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