|
|
PDF AMS2954CT-X Data sheet ( Hoja de datos )
| Número de pieza | AMS2954CT-X | |
| Descripción | 250mA LOW DROPOUT VOLTAGE REGULATOR | |
| Fabricantes | Advanced Monolithic Systems | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AMS2954CT-X (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
|
No Preview Available !
Advanced
Monolithic
Systems
AMS2954
250mA LOW DROPOUT VOLTAGE REGULATOR
FEATURES
• 2.5V, 3.0V, 3.3V and 5.0V Versions
• High Accuracy Output Voltage
• Extremely Low Quiescent Current
• Low Dropout Voltage
• Extremely Tight Load and Line Regulation
• Very Low Temperature Coefficient
• Current and Thermal Limiting
• Needs Minimum Capacitance (1µF) for Stability
• Unregulated DC Positive Transients 60V
ADDITIONAL FEATURES (ADJ ONLY)
• 1.24V to 29V Programmable Output
• Error Flag Warning of Voltage Output Dropout
• Logic Controlled Electronic Shutdown
APPLICATIONS
• Battery Powered Systems
• Portable Consumer Equipment
• Cordless Telephones
• Portable (Notebook) Computers
• Portable Instrumentation
• Radio Control Systems
• Automotive Electronics
• Avionics
• Low-Power Voltage Reference
GENERAL DESCRIPTION
The AMS2954 series are micropower voltage regulators ideally suited for use in battery-powered systems. These devices
feature very low quiescent current (typ.75µA), and very low dropout voltage (typ.50mV at light loads and 380mV at 250mA)
thus prolonging battery life. The quiescent current increases only slightly in dropout. The AMS2954 has positive transient
protection up to 60V and can survive unregulated input transient up to 20V below ground. The AMS2954 was designed to
include a tight initial tolerance (typ. 0.5%), excellent load and line regulation (typ. 0.05%), and a very low output voltage
temperature coefficient, making these devices useful as a low-power voltage reference.
The AMS2954 is available in the 3L TO-220 package, 3L TO-263, SOT-223, TO-252 and in 8-pin plastic SOIC and DIP
packages. In the 8L SOIC and PDIP packages the following additional features are offered: an error flag output warns of a low
output voltage, often due to failing batteries on input; the logic-compatible shutdown input enables the regulator to be switched
on and off; the device may be pin-strapped for a, 2.5, 3.0V, 3.3V or 5V output, or programmed from 1.24V to 29V with an
external pair of resistors.
ORDERING INFORMATION
PACKAGE TYPE
3 LEAD TO-220 3 LEAD TO-263
TO-252
SOT-223
AMS2954ACT-X AMS2954ACM-X AMS2954ACD-X AMS2954AC-X
AMS2954CT-X AMS2954CM-X AMS2954CD-X AMS2954C-X
X = 2.5V, 3.0V, 3.3V, 5.0V
SOT-223 TOP VIEW
8 LEAD SOIC 8 LEAD PDIP
AMS2954ACS-X AMS2954CP-X
AMS2954CS-X AMS2954CP-X
3L TO-220 FRONT VIEW
OPERATING
TEMP. RANGE
IND.
IND
PIN CONNECTIONS
8L SOIC/ 8L PDIP
OUTPUT 1
SENSE 2
SHUTDOWN 3
GROUND 4
8 INPUT
7 FEEDBACK
6 VTAP
5 ERROR
Top View
Advanced Monolithic Systems, Inc.
123
INPUT GND OUTPUT
TO-252 FRONT VIEW
TAB IS
GND
3 OUTPUT
2 GND
1 INPUT
3L TO-263 FRONT VIEW
TAB IS
GND
3 OUTPUT
2
1 INPUT
TAB IS
GND
3 OUTPUT
2 GND
1 INPUT
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
1 page  
TYPICAL PERFORMANCE CHARACTERISTICS
AMS2954
Quiescent Current
20
10
1
0.1
1
50 100 150 200 250
LOAD CURRENT (mA)
Dropout Characteristics
6
5V OUTPUT
5
4 IO=1mA
3
IO=250mA
2
1
0
0 1 234 5
INPUT VOLTAGE (V)
6
Input Current
250
225 5V OUTPUT
200
175
150
125
100 RL= ∞
75
50
25
0
01
2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
Input Current
270
240 5V OUTPUT
210
180
IO=250mA
150
120
90
75
60
45
30
15
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
Temperature Drift of 3
Representative Units
5.06
5V OUTPUT
5.04
5.02
5.0
4.98
4.96
0.2%
4.94
-75 -50 -25 0 25 50 75 100 125 150
TEMPERATURE (° C)
Quiescent Current
160
5V OUTPUT
140
120
100 IL= 1 mA
80
IL= 0mA
60
40
20
0
01 23 45 6 7
INPUT VOLTAGE (V)
8
Quiescent Current
120
5V OUTPUT
110
100
IL= 100µA
VIN= 6V
90
80
70
60
50
-75 -50 -25 0 25 50 75 100 125 150
TEMPERATURE (° C)
Quiescent Current
35
5V OUTPUT
30
25
20 VIN= 6V
IL= 250mA
15
10
5
-75 -50 -25 0 25 50 75 100 125 150
TEMPERATURE (° C)
Quiescent Current
24
5V OUTPUT
21
18
15
IL= 250mA
12
9
6
3
0
01 234567
INPUT VOLTAGE (V)
8
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
5 Page 
TYPICAL APPLICATIONS (Continued)
Wide Input Voltage Range Current Limiter
+VIN
8
ERROR
OUPUT
+VIN
5 ERROR
VOUT 1
AMS2954
SHUTDOWN
INPUT
3
SD
GND
FB
47
*VOUT ≈ VΙΝ
*Minimum Input-Output voltage ranges from 40mV to 400mV, depending on load current. Current limit is typically 260 mA
AMS2954
Low Drift Current Source
+V = 2 30V
IL LOAD
8
VIN
VOUT 1
AMS2954
SHUTDOWN
INPUT
3
SD
GND
FB
47
R
1%
1µF +
0.1µF
5Volt Current Limiter
5V BUS
+VIN
AMS2954 -5.0
VOUT
*VOUT ≈ 5V
GND
1µF
*Minimum Input-Output voltage ranges from 40mV to 400mV, depending on
load current. Current limit is typically 260 mA
5V Regulator with 2.5V Sleep Function
*SLEEP
INPUT
+VIN
C - MOS
GATE
47kΩ
8
ERROR
OUPU
T
SHUTDOWN
INPUT
+VIN
5 ERROR
VOUT 1
AMS2954
3 SD
GND
FB
47
470 kΩ
+VOUT
100 pF
2N3906
200kΩ
1% +
100kΩ
3.3µF
1%
100kΩ
Open Circuit Detector for 4 to 20mA Current Loop
4 20mA
1N4001
0.1µF
8
+VIN
VOUT 1
AMS2954
7
FB
GND
4
1N457
+5V
4.7kΩ
1
*OUTPUT
5
4
2
360
MIN. VOLTAGE ≈ 4V
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet AMS2954CT-X.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AMS2954CT-25 | 250mA LOW DROPOUT VOLTAGE REGULATOR | Advanced Monolithic Systems |
| AMS2954CT-30 | 250mA LOW DROPOUT VOLTAGE REGULATOR | Advanced Monolithic Systems |
| AMS2954CT-33 | 250mA LOW DROPOUT VOLTAGE REGULATOR | Advanced Monolithic Systems |
| AMS2954CT-50 | 250mA LOW DROPOUT VOLTAGE REGULATOR | Advanced Monolithic Systems |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |