参数资料
| 型号： | LT1528CT#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3.3V/ADJ 3A TO220-5 |
| 产品培训模块： | More Information on LDOs |
| 标准包装： | 50 |
| 稳压器拓扑结构： | 正，固定式和可调式 |
| 输出电压： | 3.3V，3.3 V ~ 14.15 V |
| 输入电压： | 3.9 V ~ 15 V |
| 电压 - 压降（标准）： | 0.57V @ 3A |
| 稳压器数量： | 1 |
| 电流 - 输出： | 3A |
| 电流 - 限制（最小）： | 3.2A |
| 工作温度： | 0°C ~ 125°C |
| 安装类型： | 通孔 |
| 封装/外壳： | TO-220-5 成形引线 |
| 供应商设备封装： | TO-220-5 |
| 包装： | 管件 |
| 产品目录页面： | 1327 (CN2011-ZH PDF) |
LT1528
3A Low Dropout Regulator
for Microprocessor Applications
FEATURES
DESCRIPTION
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Dropout Voltage: 0.6V at I OUT = 3A
Fast Transient Response
Output Current: 3A
Quiescent Current: 400μA
No Protection Diodes Needed
Fixed Output Voltage: 3.3V
Controlled Quiescent Current in Dropout
Shutdown I Q = 125μA
Stable with 3.3μF Output Capacitor
Reverse Battery Protection
No Reverse Output Current
Thermal Limiting
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 capacitor
ESR. Dropout voltage is 75mV at 10mA, rising to 300mV
at 1A and 600mV at 3A. The device has a quiescent cur-
rent of 400μA. Quiescent current is well controlled; it does
not increase signi?cantly as the device enters dropout.
The regulator can operate with output capacitors as small
as 3.3μF, although larger capacitors will be needed to
achieve the performance required in most microprocessor
applications. The LT1528 is available with a ?xed output
voltage of 3.3V. An external SENSE pin allows adjustment
Microprocessor Applications
Post Regulator for Switching Supplies
5V to 3.3V Logic Regulator
APPLICATIONS
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to output voltages greater than 3.3V, using a simple resis-
tive 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 125μA in shutdown. The LT1528 is avail-
able in 5-lead TO-220 and 5-lead DD-PAK packages.
L , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
TYPICAL APPLICATION
Microprocessor Supply with Shutdown
0.6
Dropout Voltage
5
IN
OUT
1
V OUT
V IN =5V
LT1528
15Ω
68Ω
+
4 × 47μF*
SOLID TANTALUM
0.5
4
SHDN
SENSE
2
J1
J2
J3
0.4
GND
3
330Ω
0.3
0.2
V SHDN (PIN 4)
<0.25
>2.80
OUTPUT
OFF
ON
SHORTING
J1
J2
V OUT
3.30
3.45
*CHOOSE CAPACITORS
TO MEET PROCESSOR
REQUIREMENTS
0.1
NC
ON
J3
4.00
1528 TA01
0
0
0.5
1.0 1.5 2.0
2.5
3.0
OUTPUT CURRENT (mA)
1528 TA02
1528fb
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1529 | 制造商:Linear Technology 功能描述: |
| LT1529-3.3 | 制造商:LINER 制造商全称:Linear Technology 功能描述:3A Low Dropout Regulators with Micropower Quiescent Current and Shutdown |
| LT1529-5 | 制造商:LINER 制造商全称:Linear Technology 功能描述:3A Low Dropout Regulators with Micropower Quiescent Current and Shutdown |
| LT1529CQ | 功能描述:IC REG LDO ADJ 3A DDPAK-5 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:1 系列:- 稳压器拓扑结构:正，固定式 输出电压:3V 输入电压:2.3 V ~ 5.5 V 电压 - 压降（标准）:0.035V @ 150mA 稳压器数量:2 电流 - 输出:150mA 电流 - 限制（最小）:300mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-UFDFN 裸露焊盘，6-TMLF? 供应商设备封装:6-TMLF?（1.6x1.6） 包装:Digi-Reel® 产品目录页面:1104 (CN2011-ZH PDF) 其它名称:576-3018-6 |
| LT1529CQ#PBF | 功能描述:IC REG LDO ADJ 3A DDPAK-5 RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:1 系列:- 稳压器拓扑结构:正，固定式 输出电压:8V 输入电压:10.5 V ~ 23 V 电压 - 压降（标准）:1.7V @ 40mA 稳压器数量:1 电流 - 输出:100mA（最小值） 电流 - 限制（最小）:- 工作温度:0°C ~ 125°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOIC 包装:剪切带 (CT) 产品目录页面:1075 (CN2011-ZH PDF) 其它名称:296-24390-1 |
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