- 您现在的位置：买卖IC网 > PDF目录13287 > LT3071EUFD#PBF (Linear Technology)IC REG LDO ADJ 5A 28QFN PDF资料下载
参数资料
| 型号： | LT3071EUFD#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 21/28页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ 5A 28QFN |
| 产品培训模块： | LT3071- LDO Regulator for High Performance Digital ICs |
| 标准包装： | 73 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 0.8 V ~ 1.8 V |
| 输入电压： | 0.95 V ~ 3 V |
| 电压 - 压降（标准）： | 0.085V @ 5A |
| 稳压器数量： | 1 |
| 电流 - 输出： | 5A |
| 电流 - 限制（最小）： | 5.1A |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-QFN（4x5） |
| 包装： | 管件 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页当前第21页第22页第23页第24页第25页第26页第27页第28页
LT3071
APPLICATIONS INFORMATION
THERMAL RESISTANCE
Reverse Voltage
The LT3071 incorporates a circuit that detects if V IN
decreases below V OUT . This reverse-voltage detector has
a typical threshold of about (V IN – V OUT ) = –6mV. If the
threshold is exceeded, this detector circuit turns off the
drive to the internal NMOS pass transistor, thereby turning
off the output. The output pulls low with the load current
discharging the output capacitance. This circuit’s intent
is to limit and prevent back-feed current from OUT to IN
if the input voltage collapses due to a fault or overload
condition.
Thermal Considerations
The LT3071’s maximum rated junction temperature of
125°C limits its power handling capability and is domi-
nated by the output current multiplied by the input/output
voltage differential:
I OUT ? ( V IN – V OUT )
The LT3071’s internal power and thermal limiting circuitry
protect it under overload conditions. For continuous nor-
mal load conditions, do not exceed the maximum junction
temperature of 125°C. Give careful consideration to all
sources of thermal resistance from junction to ambient.
This includes junction to case, case-to-heat sink interface,
heat sink resistance or circuit board to ambient as the
application dictates. Also, consider additional heat sources
mounted in proximity to the LT3071. The LT3071 is a
surface mount device and as such, heat sinking is ac-
complished by using the heat spreading capabilities of the
PC board and its copper traces. Surface mount heat sinks
and plated through-holes can also be used to spread the
heat generated by power devices. Junction-to-case thermal
resistance is specified from the IC junction to the bottom
of the case directly below the die. This is the lowest resis-
tance path for heat flow. Proper mounting is required to
ensure the best possible thermal flow from this area of the
package to the heat sinking material. Note that the exposed
pad is electrically connected to GND.
Table 3 lists thermal resistance as a function of copper
area in a fixed board size. All measurements were taken
in still air on a 4-layer FR-4 board with 1 oz solid internal
planes and 2 oz top/bottom external trace planes with a
total board thickness of 1.6mm. PCB layers, copper weight,
board layout and thermal vias affect the resultant thermal
resistance. For further information on thermal resistance
and high thermal conductivity test boards, refer to JEDEC
standard JESD51, notably JESD51-12 and JESD51-7.
Achieving low thermal resistance necessitates attention
to detail and careful PCB layout.
Table 3, UF D Plastic Package, 28-Lead QFN
COPPER AREA
TOPSIDE* BACK SIDE BOARD AREA (JUNCTION-TO-AMBIENT)
2500mm 2 2500mm 2 2500mm 2 30°C/W
1000mm 2 2500mm 2 2500mm 2 32°C/W
225mm 2 2500mm 2 2500mm 2 33°C/W
100mm 2 2500mm 2 2500mm 2 35°C/W
*Device is mounted on topside
3071fb
For more information www.linear.com/3071
21
相关PDF资料 |
PDF描述 |
|---|---|
| VI-J2P-EZ-B1 | CONVERTER MOD DC/DC 13.8V 25W |
| VI-J2N-EZ-B1 | CONVERTER MOD DC/DC 18.5V 25W |
| MAX708SESA+ | IC SUPERVISOR MPU 8-SOIC |
| LT3050MPMSE-3.3#PBF | IC REG LDO 3.3V .1A 12-MSOP |
| VI-J2M-EZ-B1 | CONVERTER MOD DC/DC 10V 25W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3071EUFD-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator with Analog Margining |
| LT3071EUFD-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator with Analog Margining |
| LT3071IUFD | 制造商:LINER 制造商全称:Linear Technology 功能描述:5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator with Analog Margining |
| LT3071IUFD#PBF | 功能描述:IC REG LDO ADJ 5A 28QFN 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:2.5V 输入电压:2.5 V ~ 5.5 V 电压 - 压降（标准）:- 稳压器数量:1 电流 - 输出:300mA（最小值） 电流 - 限制（最小）:360mA 工作温度:-40°C ~ 85°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) |
| LT3071IUFD#TRPBF | 功能描述:IC REG LDO ADJ 5A 28QFN 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:2.5V 输入电压:2.5 V ~ 5.5 V 电压 - 压降（标准）:- 稳压器数量:1 电流 - 输出:300mA（最小值） 电流 - 限制（最小）:360mA 工作温度:-40°C ~ 85°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) |
发布紧急采购，3分钟左右您将得到回复。