参数资料
| 型号： | LT3024IDE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 16/20页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ .5A/.1A 12-DFN |
| 产品培训模块： | More Information on LDOs |
| 标准包装： | 91 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 1.22 V ~ 20 V |
| 输入电压： | 1.8 V ~ 20 V |
| 电压 - 压降（标准）： | 0.3V @ 500mA，0.3V @ 100mA |
| 稳压器数量： | 2 |
| 电流 - 输出： | 500mA，100mA |
| 电流 - 限制（最小）： | 520mA，110mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-WFDFN 裸露焊盘 |
| 供应商设备封装： | 12-DFN（4x3） |
| 包装： | 管件 |
LT3024
APPLICATIONS INFORMATION
and its copper traces. Copper board stiffeners and plated
through-holes can also be used to spread the heat gener-
ated by power devices.
The following tables list thermal resistance for several
different board sizes and copper areas. All measurements
were taken in still air on 3/32" FR-4 board with one ounce
copper.
Table 1. FE Package, 16-Lead TSSOP
The power dissipated by each output will be equal to:
I OUT(MAX) (V IN(MAX) – V OUT ) + I GND (V IN(MAX) )
Where for Output 1:
I OUT(MAX) = 500mA
V IN(MAX) = 5V
I GND at (I OUT = 500mA, V IN = 5V) = 9mA
For Output 2:
COPPER AREA
THERMAL RESISTANCE
I OUT(MAX) = 100mA
TOPSIDE*
BACKSIDE
BOARD AREA (JUNCTION-TO-AMBIENT)
V IN(MAX) = 5V
2500mm 2
1000mm 2
225mm 2
100mm 2
2500mm 2
2500mm 2
2500mm 2
2500mm 2
2500mm 2
2500mm 2
2500mm 2
2500mm 2
38°C/W
43°C/W
48°C/W
60°C/W
I GND at (I OUT = 100mA, V IN = 5V) = 2mA
So for Output 1:
P = 500mA (5V – 3.3V) + 9mA (5V) = 0.90W
*Device is mounted on topside.
Table 2. UE Package, 12-Lead DFN
For Output 2:
P = 100mA (5V – 2.5V) + 2mA (5V) = 0.26W
COPPER AREA
TOPSIDE* BACKSIDE
2500mm 2 2500mm 2
1000mm 2 2500mm 2
225mm 2 2500mm 2
100mm 2 2500mm 2
THERMAL RESISTANCE
BOARD AREA (JUNCTION-TO-AMBIENT)
2500mm 2 40°C/W
2500mm 2 45°C/W
2500mm 2 50°C/W
2500mm 2 62°C/W
The thermal resistance will be in the range of 35°C/W to
55°C/W depending on the copper area. So the junction
temperature rise above ambient will be approximately
equal to:
(0.90W + 0.26W) 50°C/W = 57.8°C
*Device is mounted on topside.
The thermal resistance junction-to-case ( θ JC ), measured
at the Exposed Pad on the back of the die is 10°C/W for
the DFN package and 8°C/W for the TSSOP package.
Calculating Junction Temperature
Example: Given Output 1 set for an output voltage of
3.3V, Output 2 set for an output voltage of 2.5V, an input
voltage range of 3.8V to 5V, an output current range of
0mA to 500mA for Output 1, an output current range of
0mA to 100mA for Output 2 and a maximum ambient
temperature of 50°C, what will the maximum junction
temperature be?
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 + 57.8°C = 107.8°C
Protection Features
The LT3024 regulator incorporates several protection fea-
tures which make it 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 device is protected against reverse
input voltages, reverse output voltages and reverse voltages
from output to input. The two regulators have common
3024fa
16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3024IDE-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 100mA/500mA Low Dropout, Low Noise,Micropower Regulator |
| LT3024IDE-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 100mA/500mA Low Dropout, Low Noise,Micropower Regulator |
| LT3024IFE | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 100mA/500mA Low Dropout, Low Noise,Micropower Regulator |
| LT3024IFE#PBF | 功能描述:IC REG LDO ADJ .5A/.1A 16TSSOP 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 |
| LT3024IFE#TRPBF | 功能描述:IC REG LDO ADJ .5A/.1A 16TSSOP 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 |
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