|
|
PDF RT9728 Data sheet ( Hoja de datos )
| Número de pieza | RT9728 | |
| Descripción | 1.3A Power Switch | |
| Fabricantes | Richtek | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de RT9728 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
|
No Preview Available !
RT9728
120mΩ, 1.3A Power Switch with Programmable Current Limit
General Description
The RT9728 is a cost effective, low voltage, single
P-MOSFET high side power switch IC for USB application
with a programmable current limit feature. Low switch-on
resistance (typ.120mΩ) and low supply current (typ.
120μA) are realized in this IC.The RT9728 can offer a
programmable current limit threshold between 75mA and
1.3A (typ.) via an external resistor. The ±10% current limit
accuracy can be realized for all current limit settings.
Besides, a flag output is available to indicate fault
conditions to the local USB controller. Furthermore, the
chip also integrates an embedded delay function to prevent
mis-operation from happening due to high inrush current.
The RT9728 is an ideal solution for USB power supply
and can support flexible applications since it is functional
for various current limit requirements. It is available in
WDFN-6L 2x2 package.
Features
±10% Current Limit Accuracy @ 1.3A
Adjustable Current Limit : 75mA to 1.3A (typ.)
Meets USB Current Limiting Requirements
Operating Voltage Range : 2.5V to 5.5V
Reverse Input − Output Voltage Protection
Built-in Soft-Start
120mΩ High Side MOSFET
120μA Supply Current
RoHS Compliant and Halogen Free
Applications
USB Bus/Self Powered Hubs
USB Peripheral Ports
ACPI Power Distribution
Battery Power Equipment
3G/3.5G Data Card, Set-Top Boxes
Ordering Information
RT9728
Pin 1 Orientation***
(2) : Quadrant 2, Follow EIA-481-D
(For RT9728GQW Only)
Package Type
QW : WDFN-6L 2x2 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Z : ECO (Ecological Element with
Halogen Free and Pb free)
Note :
***Empty means Pin1 orientation is Quadrant 1
Richtek 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.
Pin Configurations
(TOP VIEW)
VOUT 1
ILIM 2
FAULT 3
6 VIN
5 GND
7 4 EN
WDFN-6L 2x2
Marking Information
RT9728GQW
J0W
J0 : Product Code
W : Date code
RT9728ZQW
J0W
J0 : Product Code
W : Date Code
Copyright ©2014 Richtek Technology Corporation. All rights reserved.
DS9728-05 October 2014
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1
1 page  
Typical Operating Characteristics
Supply Current vs. Temperature
150
140
130
120
110
100
90
80
-50
-25
0 25 50 75
Temperature (C)
100 125
On-Resistance vs. Temperature
150
140
130
120 VIN = 3.6V
110
100 VIN = 5V
90
80
70
60
-50
-25
0 25 50 75
Temperature (C)
100
125
EN Threshold Voltage vs. Temperature
1.5
1.4
1.3
1.2
1.1 Rising
1.0
0.9
0.8 Falling
0.7
0.6
0.5
-50
-25
0 25 50 75
Temperature (C)
100 125
Copyright ©2014 Richtek Technology Corporation. All rights reserved.
DS9728-05 October 2014
RT9728
FAULT Deglitch Timing vs. Temperature
10
9
8
7
6
5
-50
-25
0 25 50 75
Temperature (C)
100 125
Current Limit vs. Temperature
1.6
1.5
1.4
1.3
1.2
1.1
-50
-25
RILIM = 20kΩ
0 25 50 75
Temperature (C)
100 125
Under Voltage Lockout vs. Temperature
3.0
2.8
2.6
2.4 Rising
2.2
2.0
Falling
1.8
1.6
1.4
1.2
1.0
-50
-25
0 25 50 75
Temperature (C)
100 125
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
5
5 Page 
Outline Dimension
RT9728
D D2
L
E E2
SEE DETAIL A
1
eb
A
A3
A1
21
21
DETAIL A
Pin #1 ID and Tie Bar Mark Options
Note : The configuration of the Pin #1 identifier is optional,
but must be located within the zone indicated.
Symbol
A
A1
A3
b
D
D2
E
E2
e
L
Dimensions In Millimeters
Min Max
0.700
0.800
0.000
0.050
0.175
0.250
0.200
0.350
1.950
2.050
1.000
1.450
1.950
2.050
0.500
0.850
0.650
0.300
0.400
Dimensions In Inches
Min Max
0.028
0.031
0.000
0.007
0.002
0.010
0.008
0.077
0.014
0.081
0.039
0.057
0.077
0.081
0.020
0.033
0.026
0.012
0.016
W-Type 6L DFN 2x2 Package
Richtek Technology Corporation
14F, No. 8, Tai Yuen 1st Street, Chupei City
Hsinchu, Taiwan, R.O.C.
Tel: (8863)5526789
Richtek products are sold by description only. Richtek reserves the right to change the circuitry and/or specifications without notice at any time. Customers should
obtain the latest relevant information and data sheets before placing orders and should verify that such information is current and complete. Richtek cannot
assume responsibility for use of any circuitry other than circuitry entirely embodied in a Richtek product. Information furnished by Richtek is believed to be
accurate and reliable. However, no responsibility is assumed by Richtek or its subsidiaries 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 Richtek or its subsidiaries.
DS9728-05 October 2014
www.richtek.com
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet RT9728.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| RT9721A | 500mA High-Side Power Switches |  RichTek |
| RT9721B | 500mA High-Side Power Switches | RichTek |
| RT9722 | 1.5A Power Switch | Richtek |
| RT9724 | 2A Slew Rate Controlled Load Switch | RichTek |
| 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 |