|
|
PDF RT9705 Data sheet ( Hoja de datos )
| Número de pieza | RT9705 | |
| Descripción | 1A Power Multiplexer | |
| Fabricantes | RichTek | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de RT9705 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
|
No Preview Available !
Preliminary
RT9705
80mΩ, 1A Power Multiplexer
General Description
The RT9705 is a dual input single output power multiplexer
specifically designed to provide seamless voltage transition
between two independent power suppliers. Equipped with
two low RDS(ON) N-Channel MOSFETs driven by internal
charge pump circuitry, the RT9705 is able to deliver 1A
output current with only 80mV voltage drop. Manual or
auto switching mode is easily selected by two digital inputs
D1 and D0. When both D0 and D1 are selected high, the
RT9705 enters shutdown mode and consumes minimum
power making it ideal suitable for battery powered
equipments. A STAT pin with open drain output is provided
to indicate the switch status. A user-programmable up to
1.25A current limit function is available for maximum safety
in various applications.
The RT9705 provides comprehensive protection functions,
including adjustable current limit, over temperature
protection, soft start function for minimum inrush current,
cross-conduction protection, and reverse conduction
protection. These features greatly simplify power
multiplexer design. The RT9705 is available in TSSOP-8
package requiring minimum board area and smallest
components.
Ordering Information
RT9705
Package Type
C : TSSOP-8
Operating Temperature Range
C : Commercial Standard
P : Pb Free with Commercial Standard
Note :
RichTek Pb-free products are :
−RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
−Suitable for use in SnPb or Pb-free soldering processes.
−100%matte tin (Sn) plating.
Features
z Adjustable Current Limiting up to 1.25A
z Built-In (Typically 80mΩ) N-Channel MOSFET
z Reverse Current Flow Blocking (no body diode) i.e.
Output Can Be Forced Higher than Input (Off-State)
z Low Supply Current:
− 55μA Typical at Switch on State
− Less than 0.5μA Typical at Switch Off State
z Guaranteed 1A Continuous Load Current
z Wide Input Voltage Ranges: 2.8V to 5.5V
z Open-Drain STAT Output
z Hot Plug-In Application (Soft-Start)
z Thermal Shutdown Protection
z Smallest TSSOP-8 Package Minimizes Board Space
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z LCD Monitor, LCD-TV
z Information Appliance and Set-Top Box
z Battery-Powered Equipment
z ACPI Power Distribution
z Motherboard & Notebook PCs
z Mini PCI & PCI-Express Cards
z PCMCIA & New Cards
Pin Configurations
STAT
D0
D1
ILIM
(TOP VIEW)
8
27
36
45
TSSOP-8
VIN1
VOUT
VIN2
GND
DS9705-02 July 2005
www.richtek.com
1
1 page  
Preliminary
RT9705
Absolute Maximum Ratings (Note 1)
z Input Voltage, VIN1 & VIN2 ------------------------------------------------------------------------------------------- −0.3V to 6.0V
z Logic Inputs Voltage, D0 &D1 -------------------------------------------------------------------------------------- −0.3V to 6.0V
z Output Voltage, VOUT & STAT ------------------------------------------------------------------------------------- −0.3V to 6.0V
z Power Dissipation, PD @ TA = 25°C
TSSOP-8 ---------------------------------------------------------------------------------------------------------------- 0.43W
z Package Thermal Resistance (Note 4)
TSSOP-8, θJA ---------------------------------------------------------------------------------------------------------- 230°C/W
z Junction Temperature ------------------------------------------------------------------------------------------------- 125°C
z Lead Temperature (Soldering, 10 sec.) --------------------------------------------------------------------------- 260°C
z ESD Susceptibility (Note 2)
HBM (Human Body Mode) ------------------------------------------------------------------------------------------ 2kV
MM (Machine Mode) -------------------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions (Note 3)
z Input Voltage at VIN1
VIN2 ≥2.8V ------------------------------------------------------------------------------------------------------------- 1.5V to 5.5V
VIN2 < 2.8V ------------------------------------------------------------------------------------------------------------- 2.8V to 5.5V
z Input Voltage at VIN2
VIN1 ≥2.8V ------------------------------------------------------------------------------------------------------------- 1.5V to 5.5V
VIN1 < 2.8V ------------------------------------------------------------------------------------------------------------- 2.8V to 5.5V
z Logic Inputs Voltage (D0 &D1) ------------------------------------------------------------------------------------- 0V to 5.5V
z Storage Temperature Range ---------------------------------------------------------------------------------------- −65°C to 150°C
z Junction Temperature Range ---------------------------------------------------------------------------------------- −40°C to 125°C
Electrical Characteristics
(VIN1 = VIN2 = 3.6V, CIN = COUT = 1μF, RILIM = 400Ω, TA = 25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Power Switch
Switch On Resistance
Logic Inputs (D0 and D1)
RDS(ON)
VIN1 = VIN2 = 3.6V, IOUT = 1A
VIN1 = VIN2 = 3.6V, IOUT = 1A
−5°C ≤ TA ≤ 85°C (Note 5)
Threshold
Logic-Low Voltage VIL
Logic-High Voltage VIH
Input Current at D0 or D1
IIL
IIH
D0 or D1 = High, Sink Current
D0 or D1 = Low, Source Current
Min
--
--
--
2.0
--
--
Typ Max Units
80 95
mΩ
-- 120
-- 0.7
V
-- --
-- 1
-- 1 μA
To be continued
DS9705-02 July 2005
www.richtek.com
5
5 Page 
Outline Dimension
Preliminary
D
E E1
L
RT9705
e
A
b
A2
A1
Symbol
A
A1
A2
b
D
e
E
E1
L
Dimensions In Millimeters
Min
1.000
Max
1.200
0.025
0.175
0.800
1.060
0.190
0.300
2.900
3.100
0.650
6.200
6.600
4.300
4.500
0.450
0.750
Dimensions In Inches
Min
0.039
Max
0.047
0.001
0.007
0.031
0.042
0.007
0.012
0.114
0.122
0.026
0.244
0.260
0.169
0.177
0.018
0.030
8-Lead TSSOP Plastic Package
RICHTEK TECHNOLOGY CORP.
Headquarter
5F, No. 20, Taiyuen Street, Chupei City
Hsinchu, Taiwan, R.O.C.
Tel: (8863)5526789 Fax: (8863)5526611
DS9705-02 July 2005
RICHTEK TECHNOLOGY CORP.
Taipei Office (Marketing)
8F-1, No. 137, Lane 235, Paochiao Road, Hsintien City
Taipei County, Taiwan, R.O.C.
Tel: (8862)89191466 Fax: (8862)89191465
Email: [email protected]
www.richtek.com
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet RT9705.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| RT9701 | POWER DISTRIBUTION SWITCHES |  ETC |
| RT9701 | Power Distribution Switches |  Richtek |
| RT9701CB | 100m POWER DISTRIBUTION SWITCHES | ETC |
| RT9701CBL | 100m POWER DISTRIBUTION SWITCHES | ETC |
| 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 |