参数资料
| 型号： | LT1118CS8-2.85 |
| 厂商： | Linear Technology |
| 文件页数： | 5/8页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 2.85V .8A 8SOIC |
| 产品培训模块： | More Information on LDOs |
| 标准包装： | 100 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 2.85V |
| 输入电压： | 最高 15V |
| 电压 - 压降（标准）： | 1V @ 800mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 800mA |
| 工作温度： | 0°C ~ 70°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： | 管件 |
| 产品目录页面： | 1325 (CN2011-ZH PDF) |
LT1118/LT1118-2.5
LT1118-2.85/LT1118-5
PIN FUNCTIONS
IN: Input Supply Pin. This pin should be decoupled with
a 1μF or larger low ESR capacitor. The two IN pins on the
SO-8 package must be directly connected on the printed
circuit board to prevent voltage drops between the two
inputs. When used as a SCSI active termination, IN con-
nects to term power. When used as a supply splitter, IN is
also the positive supply output.
GND: Ground Pin. The multiple GND pins on the SO-8
package are internally connected, but lowest load regulation
errors will result if these pins are tightly connected on the
printed circuit board. This will also aid heat dissipation at
high power levels.
EN: TTL/CMOS Logic Input. A high level allows normal
operation. A low level reduces supply current to zero. This
OUT: Regulated Output Voltage. Output can source or sink
current. Current limit for sourcing and sinking current is
provided to protect the device from fault conditons. The
output must have a low ESR output ?lter capacitor. C OUT
≥ 0.22μF to guarantee stability. A 0.1μF ceramic capacitor
may be needed in parallel with C OUT if the ESR of the main
C OUT is too high.
FB: Feedback Pin. The feedback pin is used to program
the output voltage of the adjustable S8 part. The output
voltage range that can be achieved is 2.1V to 6.5V. The
output voltage is determined by the selection of feedback
resistors de?ned by the following formula:
V OUT = V FB (1 + R 1 /R 2 ) + I FB R 1
(
pin is internally connected to V IN on 3-lead ST packaged
devices.
V IN
IN
LT1118 Adjustable
OUT
1μF
V OUT = V FB 1 +
R 1
R 2
)
+ I FB R 1
1μF
EN
LT1118
GND
FB
R 1
R 2
1118 TA06
OPERATION
Output Capacitor
The LT1118 family of voltage regulators require an output
capacitor for stability. The regulators are stable with out-
put capacitors larger than 0.2μF. Load transient response
is very sensitive to output capacitor value and dielectric
choice. Low ESR ceramic capacitors are the best choice
for fast settling to load transients. Output capacitors
between 0.2μF and 1μF give good performance in most
applications. Larger tantalum output capacitors may be
used to reduce load transient amplitudes. Larger capaci-
tors should be paralleled with a 0.1μF ceramic capacitor
to maintain quick settling time performance and to insure
stability of the regulator control loop. Capacitors larger
than 10μF may be safely used with the regulators, but
little transient settling performance improvement results
from their use.
Worst case transient response of the LT1118 regulators
occurs at zero output current. In order to obtain the fastest
transient settling performance, the regulator output may
be preloaded with a small current. The preload current
reduces the regulator output impedance, reducing output
voltage settling time.
Thermal Considerations
The LT1118 regulators are packaged in plastic SOT-223 and
fused lead S8 packages. These small footprint packages
are unable to convectively dissipate the heat generated
when the regulator is operating at high current levels. In
order to control die operating temperatures, the PC board
layout should allow for maximum possible copper area at
the ground pins of the LT1118. The ground pins and the
tab on the SOT-223 package are electrically and thermally
1118fd
5
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1118CS8-5 | 功能描述:IC REG LDO 5V .8A 8-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:800 系列:- 稳压器拓扑结构:正，固定式 输出电压:2.5V 输入电压:最高 16V 电压 - 压降（标准）:0.7V @ 4A 稳压器数量:1 电流 - 输出:4A 电流 - 限制（最小）:4.2A 工作温度:0°C ~ 125°C 安装类型:表面贴装 封装/外壳:TO-263-6，D²Pak（5 引线+接片），TO-263BA 供应商设备封装:TO-263-5 包装:带卷 (TR) 其它名称:AP1184K525L-13AP1184K525LDITR |
| LT1118CS8-5#PBF | 功能描述:IC REG LDO 5V .8A 8-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:800 系列:- 稳压器拓扑结构:正，固定式 输出电压:2.5V 输入电压:最高 16V 电压 - 压降（标准）:0.7V @ 4A 稳压器数量:1 电流 - 输出:4A 电流 - 限制（最小）:4.2A 工作温度:0°C ~ 125°C 安装类型:表面贴装 封装/外壳:TO-263-6，D²Pak（5 引线+接片），TO-263BA 供应商设备封装:TO-263-5 包装:带卷 (TR) 其它名称:AP1184K525L-13AP1184K525LDITR |
| LT1118CS8-5#TR | 功能描述:IC REG LDO 5V .8A 8SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:800 系列:- 稳压器拓扑结构:正，固定式 输出电压:2.5V 输入电压:最高 16V 电压 - 压降（标准）:0.7V @ 4A 稳压器数量:1 电流 - 输出:4A 电流 - 限制（最小）:4.2A 工作温度:0°C ~ 125°C 安装类型:表面贴装 封装/外壳:TO-263-6，D²Pak（5 引线+接片），TO-263BA 供应商设备封装:TO-263-5 包装:带卷 (TR) 其它名称:AP1184K525L-13AP1184K525LDITR |
| LT1118CS8-5#TRPBF | 功能描述:IC REG LDO 5V .8A 8-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正，固定式 输出电压:3.8V 输入电压:最高 16V 电压 - 压降（标准）:0.3V @ 80mA 稳压器数量:1 电流 - 输出:80mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:带卷 (TR) 其它名称:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND |
| LT1118CST-2.5 | 功能描述:IC REG LDO 2.5V .8A SOT223 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:800 系列:- 稳压器拓扑结构:正，固定式 输出电压:2.5V 输入电压:最高 16V 电压 - 压降（标准）:0.7V @ 4A 稳压器数量:1 电流 - 输出:4A 电流 - 限制（最小）:4.2A 工作温度:0°C ~ 125°C 安装类型:表面贴装 封装/外壳:TO-263-6，D²Pak（5 引线+接片），TO-263BA 供应商设备封装:TO-263-5 包装:带卷 (TR) 其它名称:AP1184K525L-13AP1184K525LDITR |
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