- 您现在的位置：买卖IC网 > PDF目录4751 > LT3009EDC-1.2#TRMPBF (Linear Technology)IC REG LDO 1.2V 20MA 6-DFN PDF资料下载
参数资料
| 型号： | LT3009EDC-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： | 500 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 1.2V |
| 输入电压： | 1.6 V ~ 20 V |
| 电压 - 压降（标准）： | 0.28V @ 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： | 带卷 (TR) |
LT3009 Series
APPLICATIONS INFORMATION
Protection Features
The LT3009 incorporates several protection features that
make it ideal for use in battery-powered circuits. In ad-
dition to the normal protection features associated with
monolithic regulators, such as current limiting and thermal
limiting, the device also protects 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
the output of the device. For normal operation, do not
exceed a junction temperature of 125°C.
The LT3009 IN pin withstands reverse voltages of 22V. The
device limits current ?ow to less than 1mA (typically less
than 220μA) and no negative voltage appears at OUT. The
device protects both itself and the load against batteries
that are plugged in backwards.
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 LT3009 incurs no damage if OUT is pulled below
ground. If IN is left open circuit or grounded, OUT can be
pulled below ground by 22V. No current ?ows from the
pass transistor connected to OUT. However, current ?ows
100
90
80
70
60
50
40
30
20
10
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 the LT3009 protects itself by thermal limiting if neces-
sary. In this case, grounding the SHDN pin turns off the
LT3009 and stops OUT from sourcing current.
The LT3009 incurs no damage if the ADJ pin is pulled
above or below ground by 22V. If IN is left open circuit or
grounded, ADJ acts like a 100k resistor in series with a
diode when pulled above or below ground.
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 follows the
curve shown in Figure 5.
If the LT3009 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 LT3009 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.
ADJ CURRENT
OUT CURRENT
0
0
1
2
3 4
5
6 7
8
9
10
OUTPUT AND ADJ VOLTAGE (V)
3009 F05
Figure 5. Reverse Output Current
3009fd
16
相关PDF资料 |
PDF描述 |
|---|---|
| LT3009ESC8-5#TRPBF | IC REG LDO 5V 20MA SC70-8 |
| LT3009ESC8-5#TRMPBF | IC REG LDO 5V 20MA SC70-8 |
| LT1761ES5-3.3#TRM | IC REG LDO 3.3V .1A TSOT23-5 |
| HSM28DSEN-S13 | CONN EDGECARD 56POS .156 EXTEND |
| HMM28DSEN-S13 | CONN EDGECARD 56POS .156 EXTEND |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3009EDC-2.5#PBF | 制造商:Linear Technology 功能描述:Bulk |
| LT3009EDC-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:2.7V 输入电压:最高 5.5V 电压 - 压降（标准）:0.21V @ 150mA 稳压器数量:1 电流 - 输出:150mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°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:剪切带 (CT) 产品目录页面:1100 (CN2011-ZH PDF) 其它名称:576-1852-1 |
| LT3009EDC-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:2.7V 输入电压:最高 5.5V 电压 - 压降（标准）:0.21V @ 150mA 稳压器数量:1 电流 - 输出:150mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°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:剪切带 (CT) 产品目录页面:1100 (CN2011-ZH PDF) 其它名称:576-1852-1 |
| LT3009EDC-2.5-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:3μA IQ, 20mA Low Dropout Linear Regulators |
| LT3009EDC-2.5-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:3μA IQ, 20mA Low Dropout Linear Regulators |
发布紧急采购，3分钟左右您将得到回复。