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參數資料
| 型號： | LT1129-3.3 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 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： | 3.3 V FIXED POSITIVE LDO REGULATOR, 0.4 V DROPOUT |
| 文件頁數： | 1/12頁 |
| 文件大小： | 276K |
| 代理商： | LT1129-3.3 |
1
LT1129/LT1129-3.3/LT1129-5
Micropower Low Dropout
Regulators with Shutdown
U
A
O
PPLICATI
TYPICAL
OUTPUT CURRENT (A)
0
D
0.4
0.5
0.6
0.3
0.5
0.3
0.2
0.1
0.2
0.4
0.6
0.7
0.1
0
LT1129 TA02
Dropout Voltage
5V Supply with Shutdown
D
U
ESCRIPTIO
S
FEATURE
The LT1129/LT1129-3.3/LT1129-5 are micropower low
dropout regulators with shutdown. The devices are ca-
pable of supplying 700mA of output current with a drop-
out voltage of 0.4V at maximum output. Designed for use
in battery-powered systems the low quiescent current,
50
μ
A operating and 16
μ
A in shutdown, make them
an ideal choice. The quiescent current does not rise
in dropout as it does with many other low dropout
PNP regulators.
Other features of the LT1129 /LT1129-3.3/LT1129-5 in-
clude the ability to operate with small output capacitors.
They are stable with only 3.3
μ
F on the output while most
older devices require between 10
μ
F and 100
μ
F for stabil-
ity. Also the input may be connected to ground or a reverse
voltage without reverse current flow from output to input.
This makes the LT1129/LT1129-3.3/LT1129-5 ideal for
backup power situations where the output is held high and
the input is at ground or reversed. Under these conditions,
only 16
μ
A will flow from the output pin to ground. The
devices are available in 5-lead TO-220, 5-lead DD, and
3-lead SOT-223 packages.
I
0.4V Dropout Voltage
I
700mA Output Current
I
50
μ
A Quiescent Current
I
No Protection Diodes Needed
I
Adjustable Output from 3.8V to 30V
I
3.3V and 5V Fixed Output Voltages
I
Controlled Quiescent Current in Dropout
I
Shutdown
I
16
μ
A Quiescent Current in Shutdown
I
Stable with 3.3
μ
F Output Capacitor
I
Reverse Battery Protection
I
No Reverse Output Current
I
Thermal Limiting
I
Surface Mount
U
S
A
O
PPLICATI
I
Low Current Regulator
I
Regulator for Battery-Powered Systems
I
Post Regulator for Switching Supplies
I
5V to 3.3V Logic Regulator
IN
OUT
LT1129-5
GND
5V OUT
500mA
V
IN
> 5.5V
3.3
μ
F
SOLID TANTALUM
+
SENSE
LT1129 TA01
V
SHDN
(PIN 4)
< 0.25
> 2.8
NC
OUTPUT
OFF
ON
ON
SHDN
1
2
3
4
5
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LT1129-5 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Micropower Low Dropout Regulators with Shutdown |
| LT1129CF-3.3 | 功能描述:IC REG LDO 3.3V .7A 20TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - 線性 系列:- 標準包裝:3,000 系列:- 穩壓器拓撲結構:正，固定式和可調式 輸出電壓:3.3V，1.25 V ~ 5.7 V 輸入電壓:4.5 V ~ 7 V 電壓 - 壓降（標準）:1.1V @ 1A 穩壓器數量:2 電流 - 輸出:1A 電流 - 限制（最小）:1A 工作溫度:0°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:TO-252-5，DPak（4 引線 + 接片），TO-252AD 供應商設備封裝:PPAK 包裝:管件 其它名稱:497-3576-5 |
| LT1129CF-3.3#PBF | 制造商:Linear Technology 功能描述:3.3V 700MA UP LOW DROPOUT VR |
| LT1129CF-3.3#TR | 功能描述:IC REG LDO 3.3V .7A 20TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - 線性 系列:- 標準包裝:800 系列:- 穩壓器拓撲結構:正，固定式 輸出電壓:2.5V 輸入電壓:最高 16V 電壓 - 壓降（標準）:0.7V @ 4A 穩壓器數量:1 電流 - 輸出:4A 電流 - 限制（最小）:4.2A 工作溫度:0°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:TO-263-6，D²Pak（5 引線+接片），TO-263BA 供應商設備封裝:TO-263-5 包裝:帶卷 (TR) 其它名稱:AP1184K525L-13AP1184K525LDITR |
| LT1129CH2.85 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
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