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PDF RT9088 Data sheet ( Hoja de datos )
| Número de pieza | RT9088 | |
| Descripción | DDR Termination Regulator | |
| Fabricantes | Richtek Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RT9088 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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®
RT9088
DDR Termination Regulator
General Description
The RT9088 is a sink/source tracking termination regulator.
It is specifically designed for low-cost and low-external
component count systems. The RT9088 possesses a high
speed operating amplifier that provides fast load transient
response and only requires a minimum 30μF ceramic
output capacitor. The RT9088 supports remote sensing
functions and all features required to power the DDRIII
and Low Power DDRIII / DDRIV VTT bus termination
according to the JEDEC specification. In addition, the
RT9088 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 RT9088 is available in the thermal efficient package,
WDFN-10L 3x3.
Marking Information
63= : Product Code
63=YM
DNN
YMDNN : Date Code
Features
VIN Input Voltage Range: 1.1V to 3.5V
VCNTL Input Voltage Range: 2.9V to 5.5V
Support Ceramic Capacitors
Power Good Indicator
10mA Source/Sink Reference Output
Meet DDRI, DDRII JEDEC Spec
Support DDRIII, Low Power DDRIII/DDRIV VTT
Applications
Soft-Start Function
UVLO and OCP Protection
Thermal Shutdown
Applications
Notebook/Desktop/Server
Telecom/Datacom, GSM Base Station, LCD-TV/PDP-
TV, Copier/Printer, Set-Top Box
Simplified Application Circuit
VIN
REFOUT
R1
C1
C3
RT9088
VIN VCNTL
REFIN
R2 C2
REFOUT
EN EN
PGOOD
VOUT
SENSE
PGND
GND
R3 C4
C5
VCNTL
Power Good Indicator
VOUT
Copyright ©2015 Richtek Technology Corporation. All rights reserved.
DS9088-02 March 2015
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1
1 page  
RT9088
Parameter
Symbol
Test Conditions
Min Typ Max Unit
VOUT Source Current Limit
VOUT Sink Current Limit
VOUT Discharge
Resistance
ILIM_VOUT_SR
ILIM_VOUT_SK
RDISCHARGE
VOUT in PGOOD Window
VOUT in PGOOD Window
VREFIN = 0V, VOUT = 0.3V,
VEN = 0V
3.5 -- 5.5 A
3.5 -- 5.5 A
-- 18 25
Power Good Comparator
VSENSE lower threshold with
respect to REFOUT
25 20 15
PGOOD Threshold
VTH_PGOOD
VSENSE upper threshold with
respect to REFOUT
15
20
25 %
PGOOD Hysteresis
-- 5 --
PGOOD Start-Up Delay
TPGDELAY1
Start-up rising delay, VSENSE
within PGOOD range
--
2
-- ms
Output Low Voltage
PGOOD Falling Delay
VLOW _PGOOD
TPGDELAY2
IPGOOD = 4mA
Falling delay, VSENSE is out of
PGOOD range
--
--
-- 0.4 V
10 -- s
Leakage Current
VSENSE = VREFIN (PGOOD
ILEAKAGE _PGOOD high impedance),
VPGOOD = VIN + 0.3V
-- -- 1 A
REFIN and REFOUT
REFIN Input Current
REFIN Voltage Range
REFIN Under-Voltage
Lockout
IREFIN
VREFIN
VUVLO_REFIN
VEN = VCNTL
REFIN Rising
Hysteresis
-- -- 1 A
0.5 -- 1.8 V
360 390 420
mV
-- 20 --
REFOUT Voltage Tolerance VTOL_REFOUT
to VREFIN
REFOUT Source Current
Limit
REFOUT Sink Current Limit
ILIM_REFOUT_SR
ILIM_REFOUT_SK
10mA < IREFOUT < 10mA,
VREFIN = 0.75V
10mA < IREFOUT < 10mA,
VREFIN = 0.675V
10mA < IREFOUT < 10mA,
VREFIN = 0.6V
VREFOUT = 0V
VREFOUT = REFIN + 1V
15 --
15 --
15 --
10 40
10 40
15
15 mV
15
-- mA
-- mA
UVLO/EN
UVLO Threshold
VUVLO_VCNTL
Rising
Hysteresis
2.5 2.7 2.85 V
-- 120 -- mV
EN Input
Voltage
Logic-High VIN_H
Logic-Low VIN_L
1.7 --
--
V
-- -- 0.3
Thermal Shutdown
Thermal Shutdown
Threshold
TSD
Shutdown Temperature
Hysteresis
-- 160 --
°C
-- 15 --
Copyright ©2015 Richtek Technology Corporation. All rights reserved.
DS9088-02 March 2015
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
5
5 Page 
Outline Dimension
D
D2
L
RT9088
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
0.180
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
0.028
Max
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.
DS9088-02 March 2015
www.richtek.com
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet RT9088.PDF ] | |
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