参数资料
| 型号： | LT3024EDE#TR |
| 厂商： | Linear Technology |
| 文件页数： | 17/20页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ .5A/.1A 12DFN |
| 产品培训模块： | 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： | 1.22 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： | 带卷 (TR) |
LT3024
APPLICATIONS INFORMATION
V OUT = V ADJ
CURRENT FLOWS
V IN andGNDpinsandarethermallycoupled,however,the
two outputs of the LT3024 operate independently. They
can be shut down independently and a fault condition on
one output will not affect the other output electrically.
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 LT3024 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. 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 SHDN1 / SHDN2 pins will turn off
the device and stop the output from sourcing the short-
circuit current.
The ADJ pins 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 pins 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.
1.22V reference when the output is forced to 20V. The top
resistor of the resistor divider must be chosen to limit the
current into the ADJ pin to less than 5mA when the ADJ
pin is at 7V. The 13V difference between output and ADJ
pin divided by the 5mA maximum current into the ADJ pin
yields a minimum top resistor value of 2.6k.
In circuits where a backup battery is required, several
different input/output conditions can occur. The output
voltage may be held up while the input is either pulled
to ground, pulled to some intermediate voltage or is left
open circuit. Current ?ow back into the output will follow
the curve shown in Figure 7.
When the IN pin of the LT3024 is forced below either OUT
pin or either OUT pin is pulled above the IN pin, input cur-
rent for the corresponding regulator will typically drop to
less than 2μA. This can happen if the input of the device
is connected to a discharged (low voltage) battery and the
output is held up by either a backup battery or a second
regulator circuit. The state of the SHDN1 / SHDN2 pin will
have no effect on the reverse output current when the
output is pulled above the input.
100
T A = 25°C
90 V IN = 0V
80
70 INTO OUTPUT PIN
60
50
40
30
20
10
In situations where the ADJ pins are connected to a resistor
divider that would pull the pins above their 7V clamp volt-
0
0
1
2
3 4 5 6 7 8
OUTPUT VOLTAGE (V)
9
10
age if the output is pulled high, the ADJ pin input current
must be limited to less than 5mA. For example, a resistor
3024 F07
Figure 7. Reverse Output Current
divider is used to provide a regulated 1.5V output from the
3024fa
17
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3024EDE-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 |
| LT3024EFE | 功能描述:IC REG LDO ADJ .5A/.1A 16TSSOP 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 |
| LT3024EFE#PBF | 功能描述:IC REG LDO ADJ .5A/.1A 16-TSSOP 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 |
| LT3024EFE#TR | 功能描述:IC REG LDO ADJ .5A/.1A 16TSSOP 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 |
| LT3024EFE#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: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 |
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