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PDF RT9040 Data sheet ( Hoja de datos )
| Número de pieza | RT9040 | |
| Descripción | DDR Termination Regulator | |
| Fabricantes | Richtek | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RT9040 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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®
RT9040
DDR Termination Regulator
General Description
The RT9040 is a sink/source tracking termination regulator.
It is specifically designed for low-cost and low-external
component count systems. The RT9040 possesses a high
speed operating amplifier that provides fast load transient
response and only requires a minimum 20μF of ceramic
output capacitance. The RT9040 supports remote sensing
functions and all features required to power the DDRI /
DDRII / DDRIII and Low Power DDRIII VTT bus termination
according to the JEDEC specification. In addition, the
RT9040 provides an open drain PGOOD signal to monitor
the output regulation and an EN signal that can be used
to discharge VTT during S3 (suspend to RAM) for DDR
applications .
The RT9040 is available in the thermal efficient WDFN-
10L 3x3 package.
Ordering Information
RT9040 (2)
Pin 1 Orientation
(2) : Quadrant 2, Follow EIA-481-D
Package Type
QW : WDFN-10L 3x3 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Z : ECO (Ecological Element with
Halogen Free and Pb free)
Note :
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.
Features
VIN Input Voltage Range : 1.1V to 3.5V
VCNTL Input Voltage Range : 2.375V to 5.5V
MLCC Stable
PGOOD to Monitor Output Regulation
±10mA Reference (REFOUT)
Meet DDRI, DDRII JEDEC Spec Supports DDRIII, Low
Power DDRIII VTT Application
Soft Start Function UVLO and OCP
UVLO and OCP Protection
Thermal Shutdown
RoHS Compliant and Halogen Free
Application
Notebook/Desktop/Server
Telecom/Datacom, GSM Base Station, LCD-TV/PDP-
TV ,Copier/Printer, Set-Top Box
Pin Configurations
(TOP VIEW)
REFIN 1
VIN 2
VOUT 3
PGND 4
SENSE 5
10 VCNTL
9 PGOOD
8 GND
7 EN
11 6 REFOUT
WDFN-10L 3x3
Marking Information
RT9040GQW(2)
G4=YM
DNN
G4= : Product Code
YMDNN : Date Code
RT9040ZQW(2)
G4 YM
DNN
G4 : Product Code
YMDNN : Date Code
Copyright ©2014 Richtek Technology Corporation. All rights reserved.
DS9040-04 January 2014
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1
1 page  
RT9040
Note 1. Stresses beyond those listed “Absolute Maximum Ratings” may cause permanent damage to the device. These are
stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in
the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may
affect device reliability.
Note 2. θJA is measured at TA = 25°C on a high effective thermal conductivity four-layer test board per JEDEC 51-7. θJC is
measured at the exposed pad of the package.
Note 3. Devices are ESD sensitive. Handling precaution is recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.
Copyright ©2014 Richtek Technology Corporation. All rights reserved.
DS9040-04 January 2014
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
5
5 Page 
Outline Dimension
RT9040
D2
D
L
E E2
SEE DETAIL A
1
21
21
eb
DETAIL A
A
A3
Pin #1 ID and Tie Bar Mark Options
A1
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
0.180
0.300
2.950
3.050
2.300
2.650
2.950
3.050
1.500
1.750
0.500
0.350
0.450
Dimensions In Inches
Min Max
0.028
0.031
0.000
0.002
0.007
0.010
0.007
0.012
0.116
0.120
0.091
0.104
0.116
0.120
0.059
0.069
0.020
0.014
0.018
W-Type 10L DFN 3x3 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.
DS9040-04 January 2014
www.richtek.com
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet RT9040.PDF ] | |
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