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參數(shù)資料
| 型號： | SPX2954T-5.0 |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 250mA Low Dropout Voltage Regulator |
| 中文描述： | 250mA的低壓差穩(wěn)壓器 |
| 文件頁數(shù)： | 1/17頁 |
| 文件大?。?/td> | 178K |
| 代理商： | SPX2954T-5.0 |
1
Rev. 3/6/03
SP2954 250mA Low Dropout Voltage Regulator
Copyright 2003 Sipex Corporation
250mA Low Dropout Voltage Regulator
SPX2954
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.
FEATURES
■
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 and SOIC
8 Pin Versions Only
■
Error Flag Warns of Output Dropout
■
Logic-Controlled Electronic Shutdown
■
Programmable Output from 1.24V to 30V
100K
OUTPUT
ERROR
ERROR
______
SD
V
OUT
GND
FB
+V
IN
+V
IN
1.23V
1.2 to30V
R
1
.01
μ
F
3.3
μ
F
R
2
V
REF
3
8
5
1
4
7
SHUTDOWN
INPUT
+
SPX2954
Adjustable Regulator
Pin Connections
TO-263-5 Package (T5)
Top View
4 5
SPX2954
TO-263-3 Package (T)
GND
GND
SHUTDOWN
ERROR
Top View
1)
2) OUTPUT
3)
4)
5)
INPUT
SPX2954
Top View
1
2
3
3
2
SHUTDOWN
1
V
OUT
V
IN
2
1
3
8
7
6
5
SPX2954
GND
INPUT
5V, 3.3V TAP
ERROR
FEEDBACK
SENSE
OUTPUT
8-Pin Surface Mount (S)
Bottom View
1
3
2
OUTPUT
GND
INPUT
TO-92 (N)
SPX2954
1
3
2
V
OUT
GND
SOT-223 Package (M3)
Front View
V
IN
TO-220-5 Package (U5)
Front View
SPX2954
GND
SHUTDOWN
ERROR
1)
3)
4)
5)
2) OUTPUT
INPUT
1 2 3 4 5
Front View
TO-220-3 Package (U)
SPX2954
1
2
3
V
IN
V
OUT
GND
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SPX2954U-5.0 | 250mA Low Dropout Voltage Regulator |
| SPX2954AS-3.3 | 250 mA Low Drop Out Voltage Regulator |
| SPX2954AS-5.0 | CABLE ASSEMBLY; LEAD-FREE SOLDER; 10-32 MALE TO BNC MALE; 50 OHM, RG174A/U COAX |
| SPX2954AT3-5.0 | 250 mA Low Drop Out Voltage Regulator |
| SPX2954S-3.3 | 250mA Low Dropout Voltage Regulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SPX2954T5-3.3 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:250 mA Low Drop Out Voltage Regulator |
| SPX2954T5-5.0 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:250 mA Low Drop Out Voltage Regulator |
| SPX2954T-L-5-0 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| SPX2954U-3.3 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:250mA Low Dropout Voltage Regulator |
| SPX2954U-3-3 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:250mA Low Dropout Voltage Regulator |
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