参数资料
| 型号： | LT1963AES8#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 19/28页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ 1.5A 8-SOIC |
| 产品培训模块： | More Information on LDOs |
| 标准包装： | 100 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 1.21 V ~ 20 V |
| 输入电压： | 2.1 V ~ 20 V |
| 电压 - 压降（标准）： | 0.34V @ 1.5A |
| 稳压器数量： | 1 |
| 电流 - 输出： | 1.5A |
| 电流 - 限制（最小）： | 1.6A |
| 工作温度： | -40°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： | 管件 |
| 产品目录页面： | 1329 (CN2011-ZH PDF) |
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LT1963A Series
APPLICATIONS INFORMATION
The following tables list thermal resistance for several
different board sizes and copper areas. All measurements
were taken in still air on 1/16" FR-4 board with one ounce
copper.
The power dissipated by the device will be equal to:
I OUT(MAX) (V IN(MAX) – V OUT ) + I GND (V IN(MAX) )
where,
Table 3. Q Package, 5-Lead DD
COPPER AREA
TOPSIDE* BACKSIDE BOARD AREA
2500mm 2 2500mm 2 2500mm 2
1000mm 2 2500mm 2 2500mm 2
125mm 2 2500mm 2 2500mm 2
*Device is mounted on topside
Table 4. S0- 8 Package, 8-Lead SO
COPPER AREA
THERMAL RESISTANCE
(JUNCTION-TO-AMBIENT)
23°C/W
25°C/W
33°C/W
THERMAL RESISTANCE
I OUT(MAX) = 500mA
V IN(MAX) = 6V
I GND at (I OUT = 500mA, V IN = 6V) = 10mA
So,
P = 500mA(6V – 3.3V) + 10mA(6V) = 1.41W
Using a DD package, the thermal resistance will be in the
range of 23°C/W to 33°C/W depending on the copper
area. So the junction temperature rise above ambient will
be approximately equal to:
TOPSIDE* BACKSIDE
2500mm 2 2500mm 2
1000mm 2 2500mm 2
225mm 2 2500mm 2
125mm 2 2500mm 2
BOARD AREA
2500mm 2
2500mm 2
2500mm 2
2500mm 2
(JUNCTION-TO-AMBIENT)
55°C/W
55°C/W
63°C/W
69°C/W
1.41W(28°C/W) = 39.5°C
The maximum junction temperature will then be equal to
the maximum junction temperature rise above ambient
plus the maximum ambient temperature or:
*Device is mounted on topside
Table 5. SOT-223 Package, 3-Lead SOT-223
COPPER AREA THERMAL RESISTANCE
TOPSIDE* BACKSIDE BOARD AREA (JUNCTION-TO-AMBIENT)
2500mm 2 2500mm 2 2500mm 2 42°C/W
1000mm 2 2500mm 2 2500mm 2 42°C/W
225mm 2 2500mm 2 2500mm 2 50°C/W
100mm 2 2500mm 2 2500mm 2 56°C/W
1000mm 2 1000mm 2 1000mm 2 49°C/W
1000mm 2 0mm 2 1000mm 2 52°C/W
*Device is mounted on topside
T Package, 5-Lead TO-220
Thermal Resistance (Junction-to-Case) = 4°C/W
Calculating Junction Temperature
Example: Given an output voltage of 3.3V, an input volt-
age range of 4V to 6V, an output current range of 0mA
to 500mA and a maximum ambient temperature of 50°C,
what will the maximum junction temperature be?
T JMAX = 50°C + 39.5°C = 89.5°C
Protection Features
The LT1963A regulators incorporate several protection
features which make them ideal for use in battery-powered
circuits. In addition to the normal protection features
associated with monolithic regulators, such as current
limiting and thermal limiting, the devices are protected
against reverse input voltages, reverse output voltages
and reverse voltages from output to input.
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 opera-
tion, the junction temperature should not exceed 125°C.
The input of the device will withstand reverse voltages of
20V. Current flow 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 that can be plugged in backward.
19
For more information www.linear.com/LT1963A
1963aff
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相关代理商/技术参数 |
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|---|---|
| LT1963AES8TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.5A, Low Noise,Fast Transient Response LDO Regulators |
| LT1963AES8TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.5A, Low Noise,Fast Transient Response LDO Regulators |
| LT1963AEST | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.5A, Low Noise, Fast Transient Response |
| LT1963AEST-1.5 | 功能描述:IC REG LDO 1.5V 1.5A SOT223-3 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 |
| LT1963AEST-1.5#PBF | 功能描述:IC REG LDO 1.5V 1.5A SOT223-3 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: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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