参数资料
型号: LT1965IMS8E#TRPBF
厂商: Linear Technology
文件页数: 15/22页
文件大小: 0K
描述: IC REG LDO ADJ 1.1A 8-MSOP
产品培训模块: LT1965 - 1.1A, Low Noise, Low Dropout Linear Regulator
More Information on LDOs
标准包装: 2,500
稳压器拓扑结构: 正,可调式
输出电压: 1.2 V ~ 19.5 V
输入电压: 1.8 V ~ 20 V
电压 - 压降(标准): 0.31V @ 1.1A
稳压器数量: 1
电流 - 输出: 1.1A
电流 - 限制(最小): 1.2A
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)裸露焊盘
供应商设备封装: 8-MSOP-EP
包装: 带卷 (TR)
LT1965 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 a 2-layer 1/16" FR-4 board with
one ounce copper.
Table 1. Measured Thermal Resistance for DFN Package
Calculating Junction Temperature
Example: Given an output voltage of 2.5V, an input volt-
age range of 3.3V ± 5%, an output current range of 0mA
to 500mA and a maximum ambient temperature of 85°C,
what will the maximum junction temperature be?
Copper Area
Topside* Backside
Board Area
Thermal Resistance
(Junction-to-Ambient)
The power dissipated by the device equals:
1000mm
225mm
2500mm 2
2
2
2500mm 2
2500mm 2
2500mm 2
2500mm 2
2500mm 2
2500mm 2
60°C/W
62°C/W
65°C/W
I OUT(MAX) ? ( V IN(MAX) – V OUT ) + I GND ? V IN(MAX)
where:
2500mm 2
50mm
100mm 2 2500mm 2
2
*Device is mounted on topside
2500mm 2
2500mm 2
68°C/W
70°C/W
I OUT(MAX) = 500mA
V IN(MAX) = 3.465V
Table 2. Measured Thermal Resistance for MSOP Package
I GND at (I OUT = 500mA, V IN = 3.465V) = 8.2mA
Copper Area
Topside* Backside
2500mm 2 2500mm 2
Board Area
2500mm 2
Thermal Resistance
(Junction-to-Ambient)
55°C/W
So,
P = 500mA(3.465V – 2.5V) + 8.2mA(3.465V) = 0.511W
2500mm 2
2500mm 2
1000mm
57°C/W
2500mm 2
2500mm 2
225mm
60°C/W
2500mm 2
2500mm 2
50mm
68°C/W
2
2
100mm 2 2500mm 2 2500mm 2 65°C/W
2
*Device is mounted on topside
Table 3. Measured Thermal Resistance for DD-Pak Package
Copper Area Thermal Resistance
Topside* Backside Board Area (Junction-to-Ambient)
2500mm 2 2500mm 2 2500mm 2 25°C/W
Using a DFN package, the thermal resistance will be in
the range of 60°C/W to 70°C/W depending on the cop-
per area. So the junction temperature rise above ambient
approximately equals:
0.511W ? 65° C/W = 33.22°C
The maximum junction temperature equals the maximum
ambient temperature plus the maximum junction tempera-
ture rise above ambient or:
1000mm 2
125mm 2
2500mm 2
2500mm 2
2500mm 2
2500mm 2
30°C/W
35°C/W
T JMAX = 85°C + 33.22°C = 118.22°C
*Device is mounted on topside
Measured Thermal Resistance for TO-220 Package
Thermal Resistance (Junction-to-Case) = 3°C/W
Protection Features
The LT1965 regulators incorporate several protection
features that makes 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 also protect
against reverse-input voltages, reverse-output voltages
and reverse output-to-input voltages.
Current-limit protection and thermal overload protection
protect the device against current overload conditions
at its output. For normal operation, do not exceed the
maximum rated junction temperature of 125°C (LT1965E,
LT1965I) or 150°C (LT1965H).
15
For more information www.linear.com/LT1965
1965fb
相关PDF资料
PDF描述
ABM28DRTF CONN EDGECARD 56POS DIP .156 SLD
LT1763IDE-5#TRPBF IC REG LDO 5V .5A 12DFN
ABM25DRSS CONN EDGECARD 50POS DIP .156 SLD
LT1763IDE-3.3#TRPBF IC REG LDO 3.3V .5A 12DFN
ACB55DHFR CONN EDGECARD 110POS .050 SMD
相关代理商/技术参数
参数描述
LT1965IQ#PBF 功能描述:IC REG LDO ADJ 1.1A 5-DD 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
LT1965IQ#TRPBF 功能描述:IC REG LDO ADJ 1.1A 5-DD 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
LT1965IQ-1.5#PBF 功能描述:IC REG LDO 1.5V 1.1A 5-DD 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: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
LT1965IQ-1.5#TRPBF 功能描述:IC REG LDO 1.5V 1.1A 5-DD 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: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
LT1965IQ-1.8#PBF 功能描述:IC REG LDO 1.8V 1.1A 5-DD 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: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