|
|
PDF AAT4674 Data sheet ( Hoja de datos )
| Número de pieza | AAT4674 | |
| Descripción | Power Supply Selector Switch | |
| Fabricantes | Advanced Analogic Technologies | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AAT4674 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
|
No Preview Available !
General Description
The AAT4674/4674-1 are members of Analogic-
Tech’s Application Specific Power Management
SmartSwitch™ family. These devices are dual
input single output power supply selector switches
designed to operate from batteries, or any other
power supply with an input voltage up to 6V.
The AAT4674/4674-1 connects the supply voltage
www.DataSheet4U.coonm IN1 to OUT, or IN2 to OUT, through a very low
RDS(ON) power MOSFET that minimizes voltage
drops and power dissipation. The enable (EN) and
select (SEL) pin voltages control the operational
state of the internal power MOSFET switches.
Once enabled, the SEL pin will switch between the
IN1 and IN2 inputs. If both input voltages are below
the UVLO, then the AAT4674 output floats. In the
case of the AAT4674-1, if one of the input voltages
is above the UVLO threshold then that input volt-
age that is above the UVLO threshold is passed
through to the output.
The two power switches are current limited and the
current limit thresholds can be programmed through
the resistors on IIN1 and IIN2 pins respectively.
The AAT4674/4674-1 are available in thermally
enhanced, space-saving Pb-free 12-pin TSOPJW
packages. The AAT4674/4674-1 are specified for
operation over the -40°C to +85°C temperature
range.
AAT4674
Power Supply Selector Switch
Features
SmartSwitch™
• Input Voltage Supply Range: 2.5V to 6V
• High Level of Integration:
— Reverse Blocking Diode
— Current Sensing
— Programmable Current Limit
— Single Control Pin Switching
• Break-Before-Make Switch-Over
— Minimum Output Voltage Drop During
Change-Over
• Shutdown Current < 1µA
• Thermal Protection
• TSOPJW-12 Package
Applications
• Bluetooth™ Headsets
• Cell Phones
• Digital Still Cameras
• MP3 Players
• Personal Data Assistants (PDAs)
• Set Top Boxes
Typical Application
+5V
+3.3V
IN1/IN2 Select
Enable
IN1
IN2
SEL
EN
OUT
IIN1
IIN2
GND
System Load
RIIN2
RIIN1
4674.2007.09.1.0
1
1 page  
Typical Characteristics
IIN1 Shutdown Current vs. Temperature
0.8
0.6
0.4
0.2
www.DataSheet4U.com 0
-0.2
-0.4
-40
VIN1 = 6.5V
VIN1 = 5V
VIN1 = 3.6V
VIN1 = 4.2V
-15 10 35 60 85
Temperature (°C)
IIN1 Operation Current vs. Temperature
(IOUT = 0A)
20
18
16
14
12
10
8
6
4
-40
VIN1 = 5V
VIN1 = 6.5V
VIN1 = 3.6V
VIN1 = 4.2V
-15 10 35 60 85
Temperature (°C)
RDS(ON) vs. Temperature
250
200
VIN = 2.5V
150
VIN = 3.5V
100
VIN = 6.5V
50 VIN = 5V
0
-40 -15 10 35 60
Temperature (°C)
85
110
AAT4674
Power Supply Selector Switch
IIN2 Shutdown Current vs. Temperature
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-40
VIN2 = 6.5V
VIN2 = 5V
VIN2 = 3.6V
VIN2 = 4.2V
-15 10 35 60 85
Temperature (°C)
IIN2 Operation Current vs. Temperature
(IOUT = 0A)
20
18 VIN2 = 6.5V
16
14 VIN2 = 5V
12
10 VIN2 = 4.2V
8 VIN2 = 3.6V
6
4
-40 -15 10 35 60 85
Temperature (°C)
Enable Threshold vs. Input Voltage
1.1
1.05
1
0.95
VIH(EN)
0.9
0.85
0.8
VIL(EN)
0.75
0.7
0.65
0.6
2.5
3
3.5 4
4.5 5
5.5 6
6.5
Input Voltage (V)
4674.2007.09.1.0
5
5 Page 
AAT4674
Power Supply Selector Switch
Evaluation Board Schematic
www.DataSheet4U.com
C1
2.2μF
MAIN
AUX
C2
2.2μF
J1
2
1
EN
Header 2
R1
100K
U1
1 IN1
2 IN1
3 IN2
4 IN2
5 EN
6 GND
OUT
OUT
IIN1
IIN2
SEL
GND
12
11
10
9
8
7
AAT4674/4674-1
GND
OUT
IMAIN
IAUX
C3
2.2μF
R3
49.9K R2
49.9K
PWRSEL
Figure 1: AAT4674/AAT4674-1 Evaluation Board Schematic.
Evaluation Board Layout
Figure 2: AAT4674/AAT4674-1 Evaluation Board Figure 3: AAT4674/AAT4674-1 Evaluation Board
Top Side Layout.
Bottom Side Layout.
4674.2007.09.1.0
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet AAT4674.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AAT4670 | Dual-Input/ Dual-Output Load Switches | Advanced Analogic Technologies |
| AAT4670IAS-B1 | Dual-Input/ Dual-Output Load Switches | Advanced Analogic Technologies |
| AAT4670IAS-T1 | Dual-Input/ Dual-Output Load Switches | Advanced Analogic Technologies |
| AAT4670IHS-B1 | Dual-Input/ Dual-Output Load Switches | Advanced Analogic Technologies |
| 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 |