参数资料
| 型号： | LT1761ES5-2#TRM |
| 厂商： | Linear Technology |
| 文件页数： | 18/22页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 2V .1A TSOT23-5 |
| 标准包装： | 500 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 2V |
| 输入电压： | 最高 20V |
| 电压 - 压降（标准）： | 0.3V @ 100mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 100mA |
| 电流 - 限制（最小）： | 110mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-5 细型，TSOT-23-5 |
| 供应商设备封装： | TSOT-23-5 |
| 包装： | 带卷 (TR) |
| 其它名称： | LT1761ES5-2 LT1761ES5-2-ND |
LT1761 Series
APPLICATIONS INFORMATION
and a maximum ambient temperature of 50°C, what will
the maximum junction temperature be?
The power dissipated by the device will be equal to:
I OUT(MAX) (V IN(MAX) – V OUT ) + I GND (V IN(MAX) )
where,
I OUT(MAX) = 50mA
V IN(MAX) = 6V
I GND at (I OUT = 50mA, V IN = 6V) = 1mA
So,
P = 50mA(6V – 3.3V) + 1mA(6V) = 0.14W
The thermal resistance will be in the range of 125°C/W to
150°C/W depending on the copper area. So the junction
temperature rise above ambient will be approximately
equal to:
0.14W(150°C/W) = 21.2°C
The maximum junction temperature will then be equal to
the maximum junction temperature rise above ambient
plus the maximum ambient temperature or:
T JMAX = 50°C + 21.2°C = 71.2°C
Protection Features
The LT1761 regulators incorporate several protection
features which make them ideal for use in battery-pow-
ered circuits. In addition to the normal protection features
associated with monolithic regulators, such as current
Current limit protection and thermal overload protection
are intended to protect the device against current overload
conditions at the output of the device. For normal operation,
the junction temperature should not exceed 125°C.
The input of the device will withstand reverse voltages
of 20V. Current ?ow into the device will be limited to less
than 1mA (typically less than 100μA) and no negative
voltage will appear at the output. The device will protect
both itself and the load. This provides protection against
batteries which can be plugged in backward.
The output of the LT1761-X can be pulled below ground
without damaging the device. If the input is left open circuit
or grounded, the output can be pulled below ground by
20V. For ?xed voltage versions, the output will act like a
large resistor, typically 500k or higher, limiting current ?ow
to typically less than 100μA. For adjustable versions, the
output will act like an open circuit; no current will ?ow out
of the pin. If the input is powered by a voltage source, the
output will source the short-circuit current of the device
and will protect itself by thermal limiting. In this case,
grounding the SHDN pin will turn off the device and stop
the output from sourcing the short-circuit current.
The ADJ pin of the adjustable device can be pulled above
or below ground by as much as 7V without damaging the
device. If the input is left open circuit or grounded, the
ADJ pin will act like an open circuit when pulled below
ground and like a large resistor (typically 100k) in series
with a diode when pulled above ground.
limiting and thermal limiting, the devices are protected
against reverse input voltages, reverse output voltages
and reverse voltages from output to input.
1761sff
18
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1761ES5-2-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:100mA, Low Noise, LDO Micropower Regulators in TSOT-23 |
| LT1761ES5-3 | 制造商:Linear Technology 功能描述:LDO Regulator Pos 3V 0.1A 5-Pin TSOT-23 |
| LT1761ES5-3#PBF | 制造商:Linear Technology 功能描述:LDO Regulator Pos 3V 0.1A 5-Pin TSOT-23 |
| LT1761ES5-3#TR | 功能描述:IC REG LDO 3V .1A TSOT23-5 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:2.7V 输入电压:最高 5.5V 电压 - 压降（标准）:0.21V @ 150mA 稳压器数量:1 电流 - 输出:150mA 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:SOT-23-5 细型，TSOT-23-5 供应商设备封装:TSOT-23-5 包装:剪切带 (CT) 产品目录页面:1100 (CN2011-ZH PDF) 其它名称:576-1852-1 |
| LT1761ES5-3#TRM | 功能描述:IC REG LDO 3V .1A TSOT23-5 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:2.7V 输入电压:最高 5.5V 电压 - 压降（标准）:0.21V @ 150mA 稳压器数量:1 电流 - 输出:150mA 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:SOT-23-5 细型，TSOT-23-5 供应商设备封装:TSOT-23-5 包装:剪切带 (CT) 产品目录页面:1100 (CN2011-ZH PDF) 其它名称:576-1852-1 |
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