|
|
PDF ADP3308 Data sheet ( Hoja de datos )
| Número de pieza | ADP3308 | |
| Descripción | High Accuracy anyCAP Adjustable 200 mA Low Dropout Linear Regulator | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ADP3308 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
|
No Preview Available !
a
FEATURES
؎1.2% Accuracy Over Line and Load Regulations
@ 25؇C
Ultralow Dropout Voltage: 80 mV Typical @ 50 mA
Requires Only CO = 0.47 F for Stability
anyCAP = Stable with All Types of Capacitors
(Including MLCC)
Current and Thermal Limiting
Low Noise
Low Shutdown Current: 1 A
3.0 V to 12 V Supply Range
–20؇C to +85؇C Ambient Temperature Range
Several Fixed Voltage Options
Ultrasmall SOT-23-5 Package
Excellent Line and Load Regulations
APPLICATIONS
Cellular Telephones
Notebook, Palmtop Computers
Battery Powered Systems
PCMCIA Regulator
Bar Code Scanners
Camcorders, Cameras
GENERAL DESCRIPTION
The ADP3308 is a member of the ADP330x family of precision
low dropout anyCAP voltage regulators. It is pin-for-pin and
functionally compatible with National’s LP2980, but offers
performance advantages. The ADP3308 stands out from the
conventional LDOs with a novel architecture and an enhanced
process. Its patented design requires only a 0.47 µF output
capacitor for stability. This device is stable with any type of
capacitor regardless of its ESR (Equivalent Serial Resistance)
value, including ceramic types for space restricted applications.
The ADP3308 achieves ± 1.2% accuracy at room temperature
and ± 2.2% overall accuracy over temperature, line and load
regulations. The dropout voltage of the ADP3308 is only
80 mV (typical) at 50 mA. This device also includes a current
limit and a shutdown feature. In shutdown mode, the ground
current is reduced to ~1 µA.
The ADP3308 operates with a wide input voltage range from
3.0 V to 12 V and delivers a load current in excess of 100 mA.
The ADP3308 anyCAP LDO offers a wide range of output
voltages. For 100 mA version, refer to the ADP3309 data sheet.
anyCAP™ 50 mA
Low Dropout Linear Regulator
ADP3308
FUNCTIONAL BLOCK DIAGRAM
IN Q1
ERR/NC
THERMAL
PROTECTION
Q2 DRIVER
SD
GND
ADP3308
CC
Gm
BANDGAP
REF
OUT
R1
R2
ERR/NC 4
ADP3308-3.3
VIN
C1
0.47F
1 IN
OUT 5
32
ON
OFF
VOUT = +3.3V
C2
0.47F
SD GND
Figure 1. Typical Application Circuit
anyCAP is a trademark of Analog Devices, Inc.
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1998
1 page  
3.320
3.310
VOUT = 3.3V
3.300
3.290
3.280
RL = 66⍀
CL = 0.47F
VIN
7.5
7.0
0 40 80 120 160 200 240 280 320 360 400
TIME – s
Figure 11. Line Transient Response
3.320
3.310
VOUT = 3.3V
3.300
3.290
3.280
RL = 3.3k⍀
CL = 0.47F
VIN
7.5
7.0
0 20 40 60 80 100 120 140 160 180 200
TIME – s
Figure 12. Line Transient Response
ADP3308
3.320
3.310
3.300
VOUT = 3.3V
CL = 0.47F
3.290
3.280
IOUT
100
10
0 100 200 300 400 500
TIME – s
Figure 13. Load Transient
3.320
3.310
VOUT = 3.3V
CL = 4.7F
3.300
3.290
3.280
100
IOUT
10
0 100 200 300 400 500
TIME – s
Figure 14. Load Transient
3.3
VOUT = 3.3V
VOUT
0
200
150
100 IOUT
50
0
0 1 2 34 5
TIME – s
Figure 15. Short Circuit Current
4
CL = 0.47F
3
2
1
0
+3
0
VOUT
3.3V
CL = 4.7F
VOUT = 3.3V
RL = 66⍀
VSD
+3V
0 20 40 60 80
TIME – s
Figure 16. Turn On
100
4
3.3V
3
2
1
0
VOUT = 3.3V
RL = 66⍀
CL = 0.47F
3 VSD
0
0 20 40 60 80
TIME – s
Figure 17. Turn Off
100
0
–10 a. 0.47F, RL = 3.3k⍀
–20
b. 0.47F, RL = 66⍀
c. 4.7F, RL = 3.3k⍀
–30 d. 4.7F, RL = 66⍀
VOUT = +3.3V
b
–40
–50
–60
–70 b d
ad
c
–80
–90
–100 a c
10 100
1k 10k 100k 1M
FREQUENCY – Hz
10M
Figure 18. Power Supply Ripple
Rejection
10
VOUT = 3.3V
CL = 0.47F
IL = 1mA
1
0.1
0.01
100
1k 10k
FREQUENCY – Hz
100k
Figure 19. Output Noise Density
REV. A
–5–
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet ADP3308.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ADP3300 | High Accuracy anyCAP 50 mA Low Dropout Linear Regulator | Analog Devices |
| ADP3301 | High Accuracy anyCAP 100 mA Low Dropout Linear Regulator | Analog Devices |
| ADP3302 | High Precision anyCAP Dual Low Dropout Linear Regulator | Analog Devices |
| ADP3302 | High Accuracy anyCAP 100 mA Low Dropout Linear Regulator | Analog Devices |
| 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 |