参数资料
| 型号： | LT1117IST#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ .8A SOT-223 |
| 产品培训模块： | More Information on LDOs |
| 标准包装： | 78 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 1.25 V ~ 13.7 V |
| 输入电压： | 2.45 V ~ 15 V |
| 电压 - 压降（标准）： | 1.1V @ 800mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 800mA |
| 电流 - 限制（最小）： | 800mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-261-4，TO-261AA |
| 供应商设备封装： | SOT-223 |
| 包装： | 管件 |
LT1117/LT1117-2.85
LT1117-3.3/LT1117-5
800mA Low Dropout
Positive Regulators Adjustable
and Fixed 2.85V, 3.3V, 5V
FEATURES
DESCRIPTION
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Space Saving SOT-223 Surface Mount Package
3-Terminal Adjustable or Fixed 2.85V, 3.3V, 5V
Output Current of 800mA
Operates Down to 1V Dropout
Guaranteed Dropout Voltage at Multiple Current Levels
0.2% Line Regulation Max
0.4% Load Regulation Max
The LT ? 1117 is a positive low dropout regulator designed
to provide up to 800mA of output current. The device is
available in an adjustable version and fixed output voltages
of 2.85V, 3.3V and 5V. The 2.85V version is designed
specifically to be used in Active Terminators for the SCSI
bus. All internal circuitry is designed to operate down to 1V
input to output differential. Dropout voltage is guaranteed
at a maximum of 1.2V at 800mA, decreasing at lower load
APPLICATIONS
currents. On chip trimming adjusts the reference/output
voltage to within ± 1%. Current limit is also trimmed in
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Active SCSI Terminators
High Ef?ciency Linear Regulators
Post Regulators for Switching Supplies
Battery Chargers
5V to 3.3V Linear Regulators
order to minimize the stress on both the regulator and the
power source circuitry under overload conditions.
The low pro?le surface mount SOT-223 package allows the
device to be used in applications where space is limited. The
LT1117 requires a minimum of 10μF of output capacitance
L , LT, LTC, LTM, Linear Technology, OPTI-LOOP and the Linear logo are registered trademarks
of Linear Technology Corporation. UltraFast is a trademark of Linear Technology Corporation. All
other trademarks are the property of their respective owners.
for stability. Output capacitors of this size or larger are
normally included in most regulator designs.
Unlike PNP type regulators where up to 10% of the output
current is wasted as quiescent current, the quiescent current
of the LT1117 ?ows into the load, increasing ef?ciency.
TYPICAL APPLICATION
Active Terminator for SCSI-2 Bus
110 Ω
1.4
Dropout Voltage (V IN – V OUT )
–40°C ≤ T J < 0°C
4.75V TO
5.25V
+
LT1117-2.85
IN OUT
GND
10 μ F
+
22 μ F
110 Ω
110 Ω
110 Ω
18 TO 27
LINES
1.2
1.0
0.8
0.6
T J = 25°C
T J = 125°C
0°C ≤ T J ≤ 125°C
0.4
1117 TA01
0.2
0
INDICATES GUARANTEED TEST POINT
0
100 200 300 400 500 600 700 800
OUTPUT CURRENT (mA)
1117 TA02
1117fd
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1117ISTTR | 制造商:LINER 制造商全称:Linear Technology 功能描述:800mA Low Dropout Positive Regulators Adjustable and Fixed 2.85V, 3.3V, 5V |
| LT1117IST-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:800mA Low Dropout Positive Regulators Adjustable and Fixed 2.85V, 3.3V, 5V |
| LT1117ISTTRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:800mA Low Dropout Positive Regulators Adjustable and Fixed 2.85V, 3.3V, 5V |
| LT1117IST-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:800mA Low Dropout Positive Regulators Adjustable and Fixed 2.85V, 3.3V, 5V |
| LT1118 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Low IQ, Low Dropout, 800mA, Source and Sink Regulators Adjustable and Fixed 2.5V, 2.85V, 5V Output |
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