参数资料
| 型号： | LT1763CDE-3#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 19/22页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3V .5A 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，固定式 |
| 输出电压： | 3V |
| 输入电压： | 最高 20V |
| 电压 - 压降（标准）： | 0.3V @ 500mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 500mA |
| 电流 - 限制（最小）： | 520mA |
| 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 |
LT1763 Series
APPLICATIONS INFORMATION
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.
100
T J = 25°C
90 V IN = 0V
CURRENT FLOWS
80 INTO OUTPUT PIN
70 V OUT = V ADJ (LT1763)
When the IN pin of the LT1763-X is forced below the OUT
pin, or the OUT pin is pulled above the IN pin, input cur-
rent 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 SHDN pin will have no effect on the reverse output
current when the output is pulled above the input.
LT1763-1.5
60
50
40
30
20
10
0
LT1763-1.8
LT1763-2.5
LT1763-3
LT1763
LT1763-5
LT1763-3.3
0
1
2
3
4
5
6 7 8
9
10
OUTPUT VOLTAGE (V)
1763 F07
Figure 7. Reverse Output Current
1763fg
19
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1763CDE-3TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:500mA, Low Noise, LDO Micropower Regulators |
| LT1763CDE-3-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:500mA, Low Noise, LDO Micropower Regulators |
| LT1763CDE-3TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:500mA, Low Noise, LDO Micropower Regulators |
| LT1763CDE-3-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:500mA, Low Noise, LDO Micropower Regulators |
| LT1763CDE-5 | 制造商:Linear Technology 功能描述:LDO Regulator Pos 5V 0.5A 12-Pin DFN EP |
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