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| 型号： | LT3008EDC-1.2#TRMPBF |
| 厂商： | Linear Technology |
| 文件页数： | 16/20页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 1.2V 20MA 6-DFN |
| 产品培训模块： | More Information on LDOs |
| 标准包装： | 1 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 1.2V |
| 输入电压： | 2 V ~ 45 V |
| 电压 - 压降（标准）： | 0.3V @ 20mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 20mA |
| 电流 - 限制（最小）： | 22mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-WFDFN 裸露焊盘 |
| 供应商设备封装： | 6-DFN-EP（2x2） |
| 包装： | 标准包装 |
| 产品目录页面： | 1330 (CN2011-ZH PDF) |
| 其它名称： | LT3008EDC-1.2#TRMPBFDKR |
LT3008 Series
APPLICATIONS INFORMATION
The SHDN pin cannot be driven below GND unless tied to
the IN pin. If the SHDN pin is driven below GND while IN
is powered, the output will turn on. SHDN pin logic cannot
be referenced to a negative rail.
The LT3008 incurs no damage if OUT is pulled below
ground. If IN is left open circuit or grounded, OUT can be
pulled below ground by 50V. No current ?ows from the
pass transistor connected to OUT. However, current ?ows
in (but is limited by) the resistor divider that sets output
voltage. Current ?ows from the bottom resistor in the
divider and from the ADJ pin’s internal clamp through the
top resistor in the divider to the external circuitry pulling
OUT below ground. If IN is powered by a voltage source,
OUT sources current equal to its current limit capability and
to ground, pulled to some intermediate voltage or is left
open circuit. Current ?ow back into the output follows the
curve shown in Figure 6.
If the LT3008 IN pin is forced below the OUT pin or the
OUT pin is pulled above the IN pin, input current typically
drops to less than 1μA. This occurs if the LT3008 input is
connected to a discharged (low voltage) battery and either
a backup battery or a second regulator circuit holds up
the output. The state of the SHDN pin has no effect in the
reverse current if OUT is pulled above IN.
100
90
80
the LT3008 protects itself by thermal limiting if necessary.
In this case, grounding the SHDN pin turns off the LT3008
and stops OUT from sourcing current.
The LT3008 incurs no damage if the ADJ pin is pulled
above or below ground by 50V. If IN is left open circuit or
grounded, ADJ acts like a 100k resistor in series with a
70
60
50
40
30
20
10
ADJ CURRENT
OUT CURRENT
diode when pulled above or below ground.
0
0
1
2
3 4
5
6 7
8
9
10
In circuits where a backup battery is required, several
different input/output conditions can occur. The output
OUTPUT AND ADJ VOLTAGE (V)
3008 F06
voltage may be held up while the input is either pulled
Figure 6. Reverse-Output Current
3008fc
16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3008EDC-2.5 | 制造商:LINER 制造商全称:Linear Technology 功能描述:3μA IQ, 20mA, 45V Low Dropout Linear Regulators |
| LT3008EDC-2.5#PBF | 制造商:Linear Technology 功能描述:Bulk |
| LT3008EDC-2.5#TRMPBF | 功能描述:IC REG LDO 2.5V 20MA 6-DFN 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:3.3V 输入电压:2.5 V ~ 5.5 V 电压 - 压降（标准）:0.1V @ 200mA 稳压器数量:2 电流 - 输出:300mA 电流 - 限制（最小）:350mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-UFQFN 供应商设备封装:8-MLPQ-UT（1.5x1.5） 包装:剪切带 (CT) 产品目录页面:1358 (CN2011-ZH PDF) 其它名称:SC560HULCT |
| LT3008EDC-2.5#TRPBF | 功能描述:IC REG LDO 2.5V 20MA 6-DFN 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:3.3V 输入电压:2.5 V ~ 5.5 V 电压 - 压降（标准）:0.1V @ 200mA 稳压器数量:2 电流 - 输出:300mA 电流 - 限制（最小）:350mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-UFQFN 供应商设备封装:8-MLPQ-UT（1.5x1.5） 包装:剪切带 (CT) 产品目录页面:1358 (CN2011-ZH PDF) 其它名称:SC560HULCT |
| LT3008EDC-2.5PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:3μA IQ, 20mA, 45V Low Dropout Linear Regulators |
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