SPX2945 400mA带关断模式的LDO
The SPX2945 is a low power voltage regulator. This device is an excellent choice for use in battery-powered applications such as cordless telephones, radio control systems, and portable computers. The SPX2945 features very low quiescent current (100μA Typ.) and very low dropout voltage. This includes a tight initial tolerance of 1% max and very low output temperature coefficient, making the SPX2945 useful as a lowpower voltage reference. The error flag output feature is used as power-on reset for warning of a low output voltage, due to a falling voltage input of batteries. Another feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. The SPX2945 is offered in 3-pin TO-220 package, SO-8 (same pin out as SPX2951), SOT-223, surface mount 3-Pin TO-252, 3-Pin TO-263 packages and 5-Pin TO-263. The regulator output voltage (of the 8-pin SO-8) may be pin-strapped for a 3.3V and 5.0V or programmed from 1.24V to 20V with an external pair of resistors. Look for SPX2951 for 150mA and SPX2954 for 250mA applications.
技术特性
- 在400mA 输出时，输出电压为3.3V, 5.0V
- 很低的静态电流100µA
- 低压差, 在400mA时为420mV
- 极紧凑装载 及线性调节
- 非常低的温度系数
- 限流及热保护
- 输出压差的错误警报
- 逻辑关断
- 可编程的输出电压1.24V 至 20V (SO-8)
技术指标
| 输出电流(mA) |
400 |
| 最低输入电压(V) |
4.1 |
| 最高输入电压(V) |
30 |
| 静态电流(µA) |
100 |
| 精确性 |
0.5%, 1% |
| 漏失电压 |
420 |
| 输出电压1.2V |
False |
| 输出电压1.5V |
否 |
| 输出电压1.8V |
否 |
| 输出电压2.0V |
否 |
| 输出电压2.5V |
否 |
| 输出电压2.7V |
否 |
| 输出电压2.85V |
否 |
| 输出电压2.8V |
否 |
| 输出电压3.0V |
否 |
| 输出电压3.3V |
是 |
| 输出电压3.5V |
否 |
| 输出电压5.0V |
是 |
| 输出电压可调 |
否 |
功能框图 Functional Block Diagram
|
订购信息 Ordering Information
| 器件型号 |
有害物质限制 |
最低温度 |
最高温度 |
状态 |
立刻购买 |
申请样片 |
| SPX2945T5-3-3/TR |
|
|
|
运行 |
|
|
| SPX2945T5-3-3 |
|
-40 |
125 |
运行 |
|
|
| SPX2945T5-5-0 |
|
|
|
OBS |
|
|
| SPX2945T5-L-3-3 |
|
|
|
运行 |
|
|
| SPX2945T5-5-0/TR |
|
|
|
运行 |
|
|
| SPX2945T-5-0/TR |
|
-40 |
125 |
运行 |
|
|
| SPX2945S-L-5-0/TR |
|
|
|
运行 |
|
|
| SPX2945S-L-5-0 |
|
-40 |
125 |
运行 |
|
|
| SPX2945T-3-3 |
|
-40 |
125 |
运行 |
|
|
| SPX2945T-5-0 |
|
-40 |
125 |
运行 |
|
|
| SPX2945T-3-3/TR |
|
-40 |
125 |
运行 |
|
|
| SPX2945U-3-3 |
|
-40 |
125 |
运行 |
|
|
| SPX2945T-L-5-0/TR |
|
-40 |
125 |
运行 |
|
|
| SPX2945U-5-0 |
|
-40 |
125 |
运行 |
|
|
| SPX2945U-L-5-0 |
|
-40 |
125 |
返修 |
|
|
| SPX2945U-L-3-3 |
|
-40 |
125 |
返修 |
|
|
| SPX2945T-L-5-0 |
|
-40 |
125 |
运行 |
|
|
| SPX2945T5-L-5-0 |
|
-40 |
125 |
运行 |
|
|
| SPX2945T5-L-3-3/TR |
|
|
|
运行 |
|
|
| SPX2945T5-L-5-0/TR |
|
|
|
运行 |
|
|
| SPX2945T-L-3-3/TR |
|
-40 |
125 |
运行 |
|
|
| SPX2945T-L-3-3 |
|
-40 |
125 |
运行 |
|
|
| SPX2945M3-L-5-0/TR |
|
-40 |
125 |
运行 |
|
|
| SPX2945M3-L-5-0 |
|
-40 |
125 |
运行 |
|
|
| SPX2945R-3-3 |
|
|
|
OBS |
|
|
| SPX2945R-5-0 |
|
-40 |
125 |
运行 |
|
|
| SPX2945R-3-3/TR |
|
-40 |
125 |
运行 |
|
|
| SPX2945M3-L-3-3/TR |
|
-40 |
125 |
运行 |
|
|
| SPX2945M3-3-3/TR |
|
-40 |
125 |
运行 |
|
|
| SPX2945M3-3-3 |
|
-40 |
125 |
运行 |
|
|
| SPX2945M3-5-0 |
|
-40 |
125 |
运行 |
|
|
| SPX2945M3-L-3-3 |
|
-40 |
125 |
运行 |
|
|
| SPX2945M3-5-0/TR |
|
-40 |
125 |
运行 |
|
|
| SPX2945S-5-0 |
|
|
|
OBS |
|
|
| SPX2945S-3-3/TR |
|
-40 |
125 |
运行 |
|
|
| SPX2945S-5-0/TR |
|
|
|
运行 |
|
|
| SPX2945S-L-3-3/TR |
|
-40 |
125 |
运行 |
|
|
| SPX2945S-L-3-3 |
|
|
|
运行 |
|
|
| SPX2945S-3-3 |
|
-40 |
125 |
运行 |
|
|
| SPX2945R-L-3-3 |
|
-40 |
125 |
运行 |
|
|
| SPX2945R-5-0/TR |
|
|
|
运行 |
|
|
| SPX2945R-L-3-3/TR |
|
|
|
运行 |
|
|
| SPX2945R-L-5-0/TR |
|
|
|
运行 |
|
|
| SPX2945R-L-5-0 |
|
-40 |
125 |
运行 |
|
