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參數(shù)資料
| 型號(hào)： | LT1129IQ-3.3 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類(lèi)： | 基準(zhǔn)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, 0.7 V DROPOUT, PSSO5 |
| 封裝： | PLASTIC, D2PAK-5 |
| 文件頁(yè)數(shù)： | 11/12頁(yè) |
| 文件大?。?/td> | 276K |
| 代理商： | LT1129IQ-3.3 |
11
LT1129/LT1129-3.3/LT1129-5
U
S
A
shutdown pin floating (open circuit). Figure 5 shows
output current as a function of output voltage with the
input floating and the shutdown pin pulled to ground.
When the input of the LT1129 is forced to a voltage below
its nominal output voltage and its output is held high, the
output current will follow the curve shown in Figure 6 . This
O
PPLICATI
U
U
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
OUTPUT VOLTAGE (V)
0
O
μ
A
100
90
80
70
60
50
40
30
20
10
0
8
1129 F03
2
4
6
10
1
3
5
7
9
T
J
= 25°C
V
IN
= 0V
V
SENSE
= V
OUT
CURRENT FLOWS
INTO DEVICE
LT1129-3.3
LT1129
LT1129-5
Figure 5. Reverse Output Current
Figure 3. Reverse Output Current
INPUT VOLTAGE (V)
0
350
300
250
200
150
100
50
0
3
1129 F06
1
2
5
O
μ
A
4
LT1129-3.3
V
OUT
= 3.3V
V
SENSE
= V
OUT
LT1129-5
V
OUT
= 5V
Figure 6. Reverse Output Current
OUTPUT VOLTAGE (V)
0
40
35
30
25
20
15
10
5
0
3
1129 F05
1
2
5
O
μ
A
4
LT1129-3.3
LT1129-5
V
IN
= OPEN
V
SHDN
= 0V
V
SENSE
= V
OUT
OUTPUT VOLTAGE (V)
0
350
300
250
200
150
100
50
0
3
1129 F04
1
2
5
O
μ
A
4
V
IN
= OPEN
V
SHDN
= OPEN
V
SENSE
= V
OUT
LT1129-3.3
LT1129-5
Figure 4. Reverse Output Current
can happen if the input of the LT1129 is connected to a
discharged (low voltage) battery and the output is held up
by either a backup battery or by a second regulator circuit.
Users with applications requiring lower reverse currents
should contact the factory about the availability of a
modified version of the LT1129.
Table 4. Fault Conditions
INPUT PIN
≤
0.8V
≤
0.8V
Open
Open
0.8V
≤
V
IN
≤
V
OUT
0.8V
≤
V
IN
≤
V
OUT
SHDN PIN
Open (Hi)
Grounded
Open (Hi)
Grounded
Open (Hi)
Grounded
OUTPUT/SENSE PINS
Forced to V
OUT
(Nominal)
Forced to V
OUT
(Nominal)
> 1V
> 1V
Forced to V
OUT
(Nominal)
Forced to V
OUT
(Nominal)
Reverse Output Current
≈
15
μ
A (See Figure 3)
Reverse Output Current
≈
15
μ
A (See Figure 3)
Reverse Output Current
≈
200
μ
A Peak (See Figure 4)
Reverse Output Current
≈
35
μ
A at V
OUT
= V
OUT
(Nominal)
(See Figure 5)
Reverse Output Current
≈
300
μ
A Peak (See Figure 6)
Reverse Output Current
≈
300
μ
A (See Figure 6)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT1129-3.3 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| LT1129CS8 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| LT1129CT-5 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| LT1129IQ-5 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| LT1129IS8 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1129IQ5 | 制造商:Linear Technology 功能描述:LDO Regulator Pos 5V 0.7A 6-Pin(5+Tab) DDPAK |
| LT1129IQ-5 | 功能描述:IC REG LDO 5V .7A DDPAK-5 RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:800 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:2.5V 輸入電壓:最高 16V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.7V @ 4A 穩(wěn)壓器數(shù)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(lèi)型:表面貼裝 封裝/外殼:TO-263-6，D²Pak（5 引線+接片），TO-263BA 供應(yīng)商設(shè)備封裝:TO-263-5 包裝:帶卷 (TR) 其它名稱(chēng):AP1184K525L-13AP1184K525LDITR |
| LT1129IQ-5#PBF | 功能描述:IC REG LDO 5V .7A DDPAK-5 RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:8V 輸入電壓:10.5 V ~ 23 V 電壓 - 壓降（標(biāo)準(zhǔn)）:1.7V @ 40mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:100mA（最小值） 電流 - 限制（最?。?- 工作溫度:0°C ~ 125°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOIC 包裝:剪切帶 (CT) 產(chǎn)品目錄頁(yè)面:1075 (CN2011-ZH PDF) 其它名稱(chēng):296-24390-1 |
| LT1129IQ-5#PBF | 制造商:Linear Technology 功能描述:Linear Voltage Regulator IC |
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