- 您现在的位置：买卖IC网 > PDF目录4794 > SPX2954M3-L-3-3/TR (Exar Corporation)IC REG LDO 3.3V .25A SOT223-3 PDF资料下载
参数资料
| 型号： | SPX2954M3-L-3-3/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 1/17页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3.3V .25A SOT223-3 |
| 标准包装： | 2,500 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 3.3V |
| 输入电压： | 最高 30V |
| 电压 - 压降（标准）： | 0.31V @ 250mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 250mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-261-4，TO-261AA |
| 供应商设备封装： | SOT-223 |
| 包装： | 带卷 (TR) |
?
SPX2954
250mA Low Dropout Voltage Regulator
FEATURES
+V IN
■ 5.0V and 3.3V Versions at 250mA
Output
■ Accurate 0.5% for SPX2954A
■ Very Low Quiescent Current
■ Low Dropout: 310mV at 250mA
■ Extremely Tight Load and Line Regulation
■ Very Low Temperature Coefficient
■ Current and Thermal Limiting
■ Need only 1 μ F for Stability
■ Direct Replacement for LP2954
■ Offered in TO-92, TO-263, SOT-223, &
TO-220; also SOIC --8 Pin Versions Only
100K
ERROR
OUTPUT
SHUTDOWN
INPUT
3
5
ERROR
SD
8
______ +V IN
SPX2954
GND FB
4 7
V OUT
1.23V
V REF
1
R 1
R 2
1.2 to 30V
+
.01 μ F
3.3 μ F
■ Error Flag Warns of Output Dropout
■ Logic-Controlled Electronic Shutdown
■ Programmable Output from 1.24V to 30V
DESCRIPTION
The SPX2954 and SPX2954A are low power voltage regulators. These devices are an excellent
choice for use in battery-powered applications such as cordless telephones, radio control
systems, and portable computers. The SPX2954 and SPX2954A feature low quiescent current
and low dropout voltage (typ. 20mV at 100 μ A and 310mV at 250mA). This includes a tight initial
tolerance (0.5% for SPX2954A), extremely good load and line regulation (0.05% typ.), and very
low output temperature coefficient (20 ppm/ ° C typ.), making the SPX2954/SPX2954A useful as
a low-power voltage reference.
The error flag output feature is used as a power-on reset for warning of a low output voltage, due
to a falling input voltage. The logic-compatible shutdown feature enables the regulator to be
switched ON and OFF. The SPX2954/SPX2954A is offered in 3-pin TO-92, TO-263, SOT-223
and TO-220 packages, and 8 pin SOIC package.
Note:: Tab is internally connected to GND on T0-263, SOT-223, and TO-220-3.
8-Pin Surface Mount (S)
TO-263-3 Package (T)
TO-263-5 Package (T5)
TO-92 (N)
SOT-223 Package (M3)
TO-220-3 Package (U) TO-220-5 Package (U5)
SPX2954
OUTPUT
SPX2954 SENSE
1
2
8
7
INPUT
FEEDBACK
1
2
3
SPX2954
1
2
3
1
SPX2954
2 3 3 4 5
SHUTDOWN 1) INPUT
2) OUTPUT
GND 3) GND 4
4) SHUTDOWN
6
5
5V, 3.3V TAP
ERROR
OUTPUT
GND
Bottom View
INPUT
1 2 3
V IN GND V OUT
SPX2954
SPX2954
1) INPUT
2) OUTPUT
3) GND
Top View
V IN
GND
V OUT
5) ERROR
Front View
4) SHUTDOWN
5) ERROR
Top View
Top View
1 2 3
1 2 3 4 5
V IN GND V OUT
Pin Connections
Front View
Front View
Date: 12/9/05
SPX2954, 250mA Low Dropout Voltage Regulator
1
? Copyright 2005 Sipex Corporation
相关PDF资料 |
PDF描述 |
|---|---|
| SPX2954AS-L-5-0/TR | IC REG LDO 5V .25A 8SOIC |
| SPX2954AM3-L-5-0/TR | IC REG LDO 5V .25A SOT223-3 |
| EMM24DRYF | CONN EDGECARD 48POS DIP .156 SLD |
| ESM43DRSH | CONN EDGECARD 86POS DIP .156 SLD |
| ESA35DTKS | CONN EDGECARD 70POS DIP .125 SLD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SPX2954M3-L-5-0 | 功能描述:低压差稳压器 - LDO 250mA LOW DROPOUT RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| SPX2954M3-L-5-0/TR | 功能描述:低压差稳压器 - LDO 250mA LOW DROPOUT RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| SPX2954N-3.3 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:250mA Low Dropout Voltage Regulator |
| SPX2954N-3-3 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:250mA Low Dropout Voltage Regulator |
| SPX2954N-5.0 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:250mA Low Dropout Voltage Regulator |
发布紧急采购，3分钟左右您将得到回复。