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參數資料
| 型號： | LT1528 |
| 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的低壓差穩壓器的反向電流保護 |
| 文件頁數： | 1/12頁 |
| 文件大?。?/td> | 248K |
| 代理商： | LT1528 |
1
LT1528
I
Dropout Voltage: 0.6V at I
OUT
= 3A
I
Fast Transient Response
I
Output Current: 3A
I
Quiescent Current: 400
μ
A
I
No Protection Diodes Needed
I
Fixed Output Voltage: 3.3V
I
Controlled Quiescent Current in Dropout
I
Shutdown I
Q
= 125
μ
A
I
Stable with 3.3
μ
F Output Capacitor
I
Reverse Battery Protection
I
No Reverse Output Current
I
Thermal Limiting
APPLICATIO
S
U
The LT
1528 is a 3A low dropout regulator optimized to
handle the large load current transients associated with
the current generation of microprocessors. This device
has the fastest transient response of currently available
PNP regulators and is very tolerant of variations in capaci-
tor ESR. Dropout voltage is 75mV at 10mA, rising to
300mV at 1A and 600mV at 3A. The device has a quiescent
current of 400
μ
A. Quiescent current is well controlled; it
does not increase significantly as the device enters drop-
out. The regulator can operate with output capacitors as
small as 3.3
μ
F, although larger capacitors will be needed
to achieve the performance required in most microproces-
sor applications. The LT1528 is available with a fixed
output voltage of 3.3V. An external Sense pin allows
adjustment to output voltages greater than 3.3V, using a
simple resistive divider. This allows the device to be
adjusted over a wide range of output voltages, including
the 3.3V to 4.2V range required by a variety of processors
from Intel, IBM, AMD, and Cyrix.
The LT1528 has both reverse input and reverse output
protection and includes a shutdown feature. Quiescent
current drops to 125
μ
A in shutdown. The LT1528 is
available in 5-lead TO-220 and 5-lead DD packages.
3A Low Dropout Regulator
for Microprocessor Applications
FEATURES
DESCRIPTIO
N
U
Microprocessor Supply with Shutdown
OUTPUT CURRENT (mA)
0
0
D
0.1
0.2
0.3
0.4
0.6
0.5
1.0
1.5
2.0
LT1528 TA02
2.5
3.0
0.5
Dropout Voltage
, LTC and LT are registered trademarks of Linear Technology Corporation.
I
Microprocessor Applications
I
Post Regulator for Switching Supplies
I
5V to 3.3V Logic Regulator
TYPICAL APPLICATIO
N
U
5
4
1
2
3
+
V
IN
=5V
4
×
47
μ
F*
SOLID TANTALUM
V
OUT
V
SHDN
(PIN 4)
<0.25
>2.80
NC
OUTPUT
OFF
ON
ON
SHORTING
J1
J2
J3
V
OUT
3.30
3.45
4.00
LT1528 TA01
GND
IN
SHDN
OUT
SENSE
J1
J2
J3
15
68
330
LT1528
*CHOOSE CAPACITORS
TO MEET PROCESSOR
REQUIREMENTS
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| LT1528C | Octal Bus Transceivers 20-PDIP 0 to 70 |
| LT1528CT | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LT1528C | 制造商:LINER 制造商全稱:Linear Technology 功能描述:3A Low Dropout Regulator for Microprocessor Applications |
| LT1528CQ | 功能描述:IC REG LDO 3.3V/ADJ 3A DDPAK-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - 線性 系列:- 標準包裝:1 系列:- 穩壓器拓撲結構:正，固定式 輸出電壓:3V 輸入電壓:2.3 V ~ 5.5 V 電壓 - 壓降（標準）:0.035V @ 150mA 穩壓器數量:2 電流 - 輸出:150mA 電流 - 限制（最?。?300mA 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:6-UFDFN 裸露焊盤，6-TMLF? 供應商設備封裝:6-TMLF?（1.6x1.6） 包裝:Digi-Reel® 產品目錄頁面:1104 (CN2011-ZH PDF) 其它名稱:576-3018-6 |
| LT1528CQ#PBF | 功能描述:IC REG LDO 3.3V/ADJ 3A DDPAK-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - 線性 系列:- 標準包裝:1 系列:- 穩壓器拓撲結構:正，固定式 輸出電壓:8V 輸入電壓:10.5 V ~ 23 V 電壓 - 壓降（標準）:1.7V @ 40mA 穩壓器數量:1 電流 - 輸出:100mA（最小值） 電流 - 限制（最?。?- 工作溫度:0°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:8-SOIC 包裝:剪切帶 (CT) 產品目錄頁面:1075 (CN2011-ZH PDF) 其它名稱:296-24390-1 |
| LT1528CQ#PBF | 制造商:Linear Technology 功能描述:Linear Voltage Regulator IC 制造商:Linear Technology 功能描述:IC, ADJ LDO REG, 3.3V TO 14V 3A D2-PAK-5 |
| LT1528CQ#TR | 功能描述:IC REG LDO 3.3V/ADJ 3A DDPAK5 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - 線性 系列:- 標準包裝:1 系列:- 穩壓器拓撲結構:正，固定式 輸出電壓:3V 輸入電壓:2.3 V ~ 5.5 V 電壓 - 壓降（標準）:0.035V @ 150mA 穩壓器數量:2 電流 - 輸出:150mA 電流 - 限制（最?。?300mA 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:6-UFDFN 裸露焊盤，6-TMLF? 供應商設備封裝:6-TMLF?（1.6x1.6） 包裝:Digi-Reel® 產品目錄頁面:1104 (CN2011-ZH PDF) 其它名稱:576-3018-6 |
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