SGM2054 [SGMICRO]
Sink and Source DDR Termination Regulator;
| 型号： | SGM2054 |
| 厂家： | 
Shengbang Microelectronics Co, Ltd |
| 描述： | Sink and Source DDR Termination Regulator 双倍数据速率 |
| 文件： | 总14页 (文件大小：732K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SGM2054
Sink and Source
DDR Termination Regulator
GENERAL DESCRIPTION
FEATURES
The SGM2054 device is a sink and source DDR (double
data rate) termination regulator. It is specifically designed
for low-cost and low-external component count systems.
VLDOIN Voltage Range: 1.1V to 3.5V
Low Input Voltages: 2.5V Rail and 3.3V Rail
Minimum VO Effective Capacitance: 20μF
Open-Drain Power-Good (PG) Output
EN Logic Control
Other features include logic-controlled shutdown mode,
output current limit and thermal shutdown protection.
The SGM2054 has an EN signal that can be used to
discharge VO when EN is less than 0.3V.
Buffered Reference: ±10mA
Soft-Start Inrush Control
Remote Sensing
With fast transient response, remote sensing, and
soft-start capabilities to reduce inrush current, the
SGM2054 ensures the optimal system performance for
powering the DDR2, DDR3, Low-Power DDR3, DDR3L,
DDR4 and DDR5 VTT bus termination.
Fast Load Transient Response
Under-Voltage Lockout
Output Current Limit
Thermal Shutdown Protection
-40℃ to +125℃ Operating Temperature Range
Available in a Green TDFN-3×3-10L Package
The SGM2054 is available in a Green TDFN-3×3-10L
package. It operates over an operating temperature
range of -40℃ to +125℃.
APPLICATIONS
LCD TV
STB
Wireless Base Station
Server, Notebook and Desktop PC
Printer
TYPICAL APPLICATION
10
1
VREFIN
REFIN
VIN
VVIN
CREFIN
1nF
R1
100kΩ
2
9
VVLDOIN
VLDOIN
PGOOD
PGOOD
CVLDOIN
10μF × 2
CIN
4.7μF
SGM2054
ON
OFF
7
6
EN
3
5
VVO
VO
VREFOUT
CREFOUT
1μF
REFOUT
VOSNS
CVO
10μF × 3
PGND
GND
8
4
Figure 1. Typical Application Circuit
SG Micro Corp
JANUARY 2022 – REV.A
www.sg-micro.com
Sink and Source
SGM2054
DDR Termination Regulator
PACKAGE/ORDERING INFORMATION
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
DESCRIPTION
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
MODEL
SGM
2054D
XXXXX
SGM2054
TDFN-3×3-10L
SGM2054XTD10G/TR
Tape and Reel, 4000
-40℃ to +125℃
MARKING INFORMATION
NOTE: XXXXX = Date Code, Trace Code and Vendor Code.
X X X X X
Vendor Code
Trace Code
Date Code - Year
Green (RoHS & HSF): SG Micro Corp defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If
you have additional comments or questions, please contact your SGMICRO representative directly.
OVERSTRESS CAUTION
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed in Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to
absolute maximum rating conditions for extended periods
may affect reliability. Functional operation of the device at any
conditions beyond those indicated in the Recommended
Operating Conditions section is not implied.
REFIN, VIN, VLDOIN, VOSNS to GND ............ -0.3V to 3.6V
EN, PGOOD to GND ........................................ -0.3V to 3.6V
PGND to GND .................................................. -0.3V to 0.3V
REFOUT to GND............................-0.3V to (VREFOUT + 0.3V)
VO to GND........................................ -0.3V to (VLDOIN + 0.3V)
Package Thermal Resistance
TDFN-3×3-10L, θJA .................................................... 56℃/W
TDFN-3×3-10L, θJB .................................................... 26℃/W
TDFN-3×3-10L, θJC(TOP) ............................................. 59℃/W
TDFN-3×3-10L, θJC(BOT) ............................................. 10℃/W
Junction Temperature.................................................+150℃
Storage Temperature Range .......................-65℃ to +150℃
Lead Temperature (Soldering, 10s)............................+260℃
ESD Susceptibility
ESD SENSITIVITY CAUTION
This integrated circuit can be damaged if ESD protections are
not considered carefully. SGMICRO recommends that all
integrated circuits be handled with appropriate precautions.
Failure to observe proper handling and installation procedures
can cause damage. ESD damage can range from subtle
performance degradation tocomplete device failure. Precision
integrated circuits may be more susceptible to damage
because even small parametric changes could cause the
device not to meet the published specifications.
HBM.............................................................................7000V
CDM ............................................................................1000V
RECOMMENDED OPERATING CONDITIONS
VIN to GND.....................................................2.375V to 3.5V
VLDOIN to GND .................................................1.1V to 3.5V
EN, PGOOD, VO, VOSNS to GND........................0V to 3.5V
REFIN to GND....................................................0.5V to 1.8V
REFOUT to GND...................................................0V to 1.8V
PGND to GND ...................................................................0V
VLDOIN Effective Capacitance, CLDOIN ................ 15μF (MIN)
VIN Effective Capacitance, CIN .............................. 1μF (MIN)
VO Effective Capacitance, CVO .......................20μF to 100μF
REFOUT Effective Capacitance, CREFOUT ..........0.1μF to 1μF
Operating Junction Temperature Range......-40℃ to +125℃
DISCLAIMER
SG Micro Corp reserves the right to make any change in
circuit design, or specifications without prior notice.
SG Micro Corp
www.sg-micro.com
JANUARY 2022
2
Sink and Source
SGM2054
DDR Termination Regulator
PIN CONFIGURATION
(TOP VIEW)
REFIN
1
2
3
4
5
10 VIN
VLDOIN
VO
9
8
7
6
PGOOD
GND
GND
PGND
VOSNS
EN
REFOUT
TDFN-3×3-10L
PIN DESCRIPTION
PIN
1
NAME
REFIN
VLDOIN
VO
I/O
I
FUNCTION
Reference Input Pin.
Regulator Supply Voltage Pin. It is recommended to use a ceramic capacitor with a
minimum effective capacitance of 15μF from VLDOIN pin to ground.
2
I
Regulator Output Pin. It is recommended to use output capacitor with effective capacitance
3
O
G
I
in the range of 20μF to 100μF.
4
PGND
VOSNS
REFOUT
EN
Regulator Power Ground.
Voltage Sense Input Pin. Connect to the remote voltage sensing point of load powered by
VO.
5
Reference Output Pin. It is recommended to use output capacitor with effective capacitance
6
O
I
in the range of 0.1μF to 1μF.
7
Enable Pin. Drive EN high to turn on the regulator. Drive EN low to turn off the regulator.
Signal Ground.
8
GND
G
O
I
Power-Good Indicator Output Pin. An open-drain output and active high when the output
voltage reaches VTH(PG) of the target.
9
PGOOD
VIN
Input Voltage Supply Pin. It is recommended to use a ceramic capacitor with a minimum
effective capacitance of 1μF from VIN pin to ground.
10
Exposed
Pad
Exposed Pad. Connect it to GND internally. Connect it to a large ground plane to maximize
thermal performance; this pad is not an electrical connection point.
GND
G
NOTE: I = Input, O = Output, G = Ground.
SG Micro Corp
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JANUARY 2022
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Sink and Source
SGM2054
DDR Termination Regulator
ELECTRICAL CHARACTERISTICS
(VVIN = 3.3V, VVLDOIN = 1.8V, VREFIN = 0.9V, VEN = VVIN, CVO = 3 × 10μF, TJ = -40℃ to +125℃, typical values are at TJ = +25℃,
unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
Supply Current
Supply Current
IVIN
VEN = 3.3V, no load
0.7
50
1
mA
VEN = 0V, VREFIN = 0V, no load
VEN = 0V, VREFIN > 0.4V, no load
VEN = 3.3V, no load
65
240
50
10
Shutdown Current
ISHDN
IVLDOIN
μA
165
1
Supply Current of VLDOIN
Shutdown Current of VLDOIN
Input Current
μA
μA
IVLDOIN(SHDN) VEN = 0V, no load
0.1
Input Current of REFIN
VO Output
IREFIN
VEN = 3.3V
0.5
μA
TJ = +25℃
0.9
0.75
0.675
0.6
V
mV
V
V
REFOUT = 0.9V (DDR2),
IVO = 0A
TJ = -40℃ to +125℃
TJ = +25℃
-12
-12
-12
-12
12
12
12
12
VREFOUT = 0.75V (DDR3),
IVO = 0A
TJ = -40℃ to +125℃
TJ = +25℃
mV
V
VREFOUT = 0.675V (DDR3L),
Output DC Voltage of VO
VVO
I
VO = 0A
TJ = -40℃ to +125℃
TJ = +25℃
mV
V
VREFOUT = 0.6V (DDR4),
IVO = 0A
TJ = -40℃ to +125℃
TJ = +25℃
mV
V
0.55
VREFOUT = 0.55V (DDR5),
IVO = 0A
TJ = -40℃ to +125℃
-12
-12
12
12
mV
mV
Output Voltage Tolerance to REFOUT
VO Source Current Limit
VOTOL
-2A < IVO < 2A
With reference to REFOUT, VOSNS = 90% × VREFOUT
TJ = -40℃ to +85℃
,
IVOSRCL
3
5.5
A
With reference to REFOUT, VOSNS = 110% × VREFOUT
TJ = -40℃ to +85℃
VREFIN = 0V, VVO = 0.3V, VEN = 0V
,
VO Sink Current Limit
IVOSNCL
RDIS
-5.7
-3.5
30
A
Discharge Resistance of VO
16
Ω
Power-Good Comparator
PGOOD window lower threshold with respect to
REFOUT
PGOOD window upper threshold with respect to
REFOUT
-24
16
-20
-16
26
VO PGOOD Threshold
VTH(PG)
%
20
5
PGOOD hysteresis
Start-up rising edge, VOSNS within 15% of
REFOUT
PGOOD Start-Up Delay
tPGSTUPDLY
2
ms
Output Low Voltage
PGOOD Bad Delay
VPGOODLOW ISINK = 4mA
0.4
1
V
tPBADDLY
VOSNS is outside of the ±20% PGOOD window
0.2
μs
VOSNS = VREFIN (PGOOD high impedance),
VPGOOD = VIN + 0.2V
Leakage Current
IPGOODLKG
μA
SG Micro Corp
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JANUARY 2022
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Sink and Source
SGM2054
DDR Termination Regulator
ELECTRICAL CHARACTERISTICS (continued)
(VVIN = 3.3V, VVLDOIN = 1.8V, VREFIN = 0.9V, VEN = VVIN, CVO = 3 × 10μF, TJ = -40℃ to +125℃, typical values are at TJ = +25℃,
unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
REFIN and REFOUT
REFIN Voltage Range
VREFIN
0.5
1.8
V
mV
mV
V
REFIN Under Voltage Lockout
VREFINUVLO REFIN rising
350
380
20
410
REFIN Under Voltage Lockout Hysteresis VREFINUVHYS
REFOUT Voltage
VREFOUT
REFIN
VREFIN = 1.25V
-12
-12
-12
-12
-12
-12
20
12
12
12
12
12
12
VREFIN = 0.9V
VREFIN = 0.75V
VREFIN = 0.675V
VREFIN = 0.6V
VREFIN = 0.55V
REFOUT Voltage Tolerance to VREFIN
VREFOUTTOL -1mA < IREFOUT < 1mA
mV
REFOUT Source Current Limit
REFOUT Sink Current Limit
UVLO and EN Logic Threshold
IREFOUTSRCL VREFOUT = 0V
IREFOUTSNCL VREFOUT = VIN
40
40
mA
mA
20
Wake up
VUVLO
V
2.15
1
2.25
80
2.35
UVLO Threshold
Hysteresis
mV
High-Level Input Voltage
Low-Level Input Voltage
Hysteresis Voltage
VENIH
VENIL
Enable
Enable
Enable
EN
0.5
1
V
VENYST
IEN-LKG
0.03
27
Logic Input Leakage Current
-1
μA
μs
COUT = 100μF, VVO(NOM) = 0.6V,
EN turns on to VVO = 90% × VVO(NOM)
Start-Up Time
tSTR
Thermal Shutdown
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
TSHDN
150
20
℃
ΔTSHDN
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Sink and Source
SGM2054
DDR Termination Regulator
TYPICAL PERFORMANCE CHARACTERISTICS
TJ = +25℃, VVLDOIN = 1.8V, VVOSNS = 0.9V, VEN = VVIN, CVO = 3 × 10μF, unless otherwise noted.
VO Load Regulation
VO Load Regulation
903
902
901
900
899
898
897
753
752
751
750
749
748
747
— TJ = -40℃
— TJ = 0℃
— TJ = +25℃
— TJ = +85℃
— TJ = -40℃
— TJ = 0℃
— TJ = +25℃
— TJ = +85℃
VREFIN = 0.9V,
VVIN = 3.3V
DDR2
VREFIN = 0.75V,
VVIN = 3.3V
DDR3
-3
-2
-1
0
1
2
3
3
3
-3
-2
-1
0
1
2
3
3
3
Output Current (A)
VO Load Regulation
Output Current (A)
VO Load Regulation
678
677
676
675
674
673
672
603
602
601
600
599
598
597
— TJ = -40℃
— TJ = 0℃
— TJ = +25℃
— TJ = +85℃
— TJ = -40℃
— TJ = 0℃
— TJ = +25℃
— TJ = +85℃
VREFIN = 0.6V,
VVIN = 3.3V
DDR4
VREFIN = 0.675V,
VVIN = 3.3V
DDR3L
-3
-2
-1
0
1
2
-3
-2
-1
0
1
2
Output Current (A)
VO Load Regulation
Output Current (A)
VO Load Regulation
903
902
901
900
899
898
897
753
752
751
750
749
748
747
— TJ = -40℃
— TJ = 0℃
— TJ = +25℃
— TJ = +85℃
— TJ = -40℃
— TJ = 0℃
— TJ = +25℃
— TJ = +85℃
VREFIN = 0.9V,
VVIN = 2.5V
DDR2
VREFIN = 0.75V,
VVIN = 2.5V
DDR3
-3
-2
-1
0
1
2
-3
-2
-1
0
1
2
Output Current (A)
Output Current (A)
SG Micro Corp
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Sink and Source
SGM2054
DDR Termination Regulator
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
TJ = +25℃, VVLDOIN = 1.8V, VVOSNS = 0.9V, VEN = VVIN, CVO = 3 × 10μF, unless otherwise noted.
VO Load Regulation
VO Load Regulation
678
677
676
675
674
673
672
603
602
601
600
599
598
597
— TJ = -40℃
— TJ = 0℃
— TJ = +25℃
— TJ = +85℃
— TJ = -40℃
— TJ = 0℃
— TJ = +25℃
— TJ = +85℃
VREFIN = 0.675V,
VVIN = 2.5V
DDR3L
VREFIN = 0.6V,
VVIN = 2.5V
DDR4
-3
-2
-1
0
1
2
3
-3
-2
-1
0
1
2
3
Output Current (A)
Output Current (A)
REFOUT Load Regulation
REFOUT Load Regulation
905
903
901
899
897
895
755
753
751
749
747
745
— TJ = -40℃
— TJ = 0℃
— TJ = +25℃
— TJ = +85℃
— TJ = -40℃
— TJ = 0℃
— TJ = +25℃
— TJ = +85℃
VREFIN = 0.9V,
VVIN = 3.3V
DDR2
VREFIN = 0.75V,
VVIN = 3.3V
DDR3
-10
-5
0
5
10
-10
-5
0
5
10
REFOUT Output Current (mA)
REFOUT Load Regulation
REFOUT Output Current (mA)
REFOUT Load Regulation
680
678
676
674
672
670
605
603
601
599
597
595
— TJ = -40℃
— TJ = -40℃
VREFIN = 0.675V,
VVIN = 3.3V
DDR3L
VREFIN = 0.6V,
VVIN = 3.3V
DDR4
— TJ = 0℃
— TJ = 0℃
— TJ = +25℃
— TJ = +85℃
— TJ = +25℃
— TJ = +85℃
-10
-5
0
5
10
-10
-5
0
5
10
REFOUT Output Current (mA)
REFOUT Output Current (mA)
SG Micro Corp
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Sink and Source
SGM2054
DDR Termination Regulator
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
TJ = +25℃, VVLDOIN = 1.8V, VVOSNS = 0.9V, VEN = VVIN, CVO = 3 × 10μF, unless otherwise noted.
Load Transient Response
IVO
VREFOUT
VVO
VVIN = 3.3V, IVO = -1.5A to 1.5A
Time (1ms/div)
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Sink and Source
SGM2054
DDR Termination Regulator
FUNCTIONAL BLOCK DIAGRAM
VLDOIN
+
REFIN
REFOUT
-
UVLO1
-
Discharge 1
0.38V
2.25V
+
+
VO
-
UVLO2
-
Discharge 2
+
VIN
EN
PGND
+
VOSNS
PGOOD
1.2 × VREFOUT
0.8 × VREFOUT
-
Start-Up
Delay
GND
+
-
SGM2054
Figure 2. Block Diagram
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Sink and Source
SGM2054
DDR Termination Regulator
DETAILED DESCRIPTION
and VO pins. For sinking, it discharges output capacitors
from the REFOUT and VO pins to GND. When VO is
outside of the power-good window, the clamping
current is one-half of the full over-current limit (OCL).
When VO is inside the power-good window, the
clamping current will switch to the full OCL.
Sink and Source Regulator (VO Pin is the
Output)
The SGM2054 is an ultra-low dropout voltage, sink and
source linear regulator which is specifically designed as
the termination voltage of DDR memory. It can provide
up to 3A output current capability.
The SGM2054 has a built-in high-side N-MOSFET for
current sourcing and a low-side N-MOSFET for current
sinking. To support the fast load transient response of
DDR memory, the feedback loop of the SGM2054 is
very fast, it can get fast load transient response using
small ceramic capacitors and save cost. The VOSNS
remote sensing pin is used to compensate the dropout
voltage generated by the PCB trace resistance and it
should be connected to the remote node of load which
is powered by VO.
Enable Control
The SGM2054 uses the EN pin to enable/disable the
device. When the EN pin voltage is lower than 0.5V, the
device is in shutdown state. In this state, the internal
discharge transistor is active to pull the output voltage to
ground through a 16Ω (TYP) resistor.
When the EN pin voltage is higher than 1V, the device
is in active state, the input voltage is regulated to the
output voltage and the internal discharge transistor is
turned off.
Reference Input (REFIN Pin)
Power-Good
The input voltage range of the REFIN pin is from 0.5V
to 1.8V and it is used to generate the reference voltage
(VREFOUT) of DDR memory. It is set by an external
equivalent ratio voltage divider connected to the
memory power supply bus (VDDQ). In application,
The PGOOD pin is an open-drain that asserts high with
2ms (TYP) delay time after the VO enters power-good
window which is VVO within +20% of VREFOUT. When the
VO is outside the PGOOD window, PGOOD de-asserts
within 0.2μs (TYP). 100kΩ (TYP) pull-up resistor is
recommended, which should be connected to a stable
and right power supply to interface with digital
controller.
VREFOUT, VTT and VDDQ must meet the equation:
VREFOUT = VTT = VDDQ / 2
REFOUT and VO must track the reference input at the
REFIN pin.
Output Current Limit
When overload events happen, the output current is
internally limited.
Reference Output (REFOUT Pin)
REFOUT is independent of the EN pin state. The output
voltage is tightly regulated to track the reference voltage
applied at the REFIN pin. When REFIN voltage rises to
380mV and VVIN is above the UVLO threshold,
REFOUT will become active. When VREFOUT is lower
than 360mV, REFOUT is disabled, and it will be
discharged to GND by an internal 130Ω (TYP) MOSFET.
Under-Voltage Lockout (UVLO)
The UVLO circuit monitors the input voltage to prevent
the device from turning on before VVIN rises above the
VUVLO threshold. The UVLO circuit responds quickly to
glitches on the VIN pin and attempts to disable the
output of the device if any of these rails collapses. The
local input capacitance prevents severe brownouts in
most applications.
REFOUT can source and sink 10mA to/from load. It is
used as DDR termination voltage (VTT) of DDR memory.
Soft-Start
Thermal Shutdown
The VO pin has soft-start function using current clamp
method. It limits inrush current when charging the
output capacitors. The soft-start function and over-
current protection are completely symmetrical for
sourcing and sinking current. For sourcing, it charges
output capacitors from the VLDOIN pin to the REFOUT
The SGM2054 can detect the temperature of die. When
the die temperature exceeds the threshold value of
thermal shutdown, the SGM2054 will be in shutdown
state and remain in this state until the die temperature
decreases to +130℃.
SG Micro Corp
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JANUARY 2022
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Sink and Source
SGM2054
DDR Termination Regulator
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Original (JANUARY 2022) to REV.A
Page
Changed from product preview to production data .................................................................................................................................................All
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PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
TDFN-3×3-10L
D
e
N10
D1
k
E
E1
N5
N1
b
L
BOTTOM VIEW
TOP VIEW
2.4
1.7 2.8
A
A1
A2
0.6
SIDE VIEW
0.24
0.5
RECOMMENDED LAND PATTERN (Unit: mm)
Dimensions
In Millimeters
Dimensions
In Inches
Symbol
MIN
MAX
0.800
0.050
MIN
0.028
0.000
MAX
0.031
0.002
A
A1
A2
D
0.700
0.000
0.203 REF
0.008 REF
2.900
2.300
2.900
1.500
3.100
2.600
3.100
1.800
0.114
0.091
0.114
0.059
0.122
0.103
0.122
0.071
D1
E
E1
k
0.200 MIN
0.500 TYP
0.008 MIN
0.020 TYP
b
0.180
0.300
0.300
0.500
0.007
0.012
0.012
0.020
e
L
NOTE: This drawing is subject to change without notice.
SG Micro Corp
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PACKAGE INFORMATION
TAPE AND REEL INFORMATION
REEL DIMENSIONS
TAPE DIMENSIONS
P2
P0
W
Q2
Q4
Q2
Q4
Q2
Q4
Q1
Q3
Q1
Q3
Q1
Q3
B0
Reel Diameter
P1
A0
K0
Reel Width (W1)
DIRECTION OF FEED
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF TAPE AND REEL
Reel Width
Reel
Diameter
A0
B0
K0
P0
P1
P2
W
Pin1
Package Type
W1
(mm)
(mm) (mm) (mm) (mm) (mm) (mm) (mm) Quadrant
TDFN-3×3-10L
13″
12.4
3.35
3.35
1.13
4.0
8.0
2.0
12.0
Q2
SG Micro Corp
TX10000.000
www.sg-micro.com
PACKAGE INFORMATION
CARTON BOX DIMENSIONS
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF CARTON BOX
Length
(mm)
Width
(mm)
Height
(mm)
Reel Type
Pizza/Carton
13″
386
280
370
5
SG Micro Corp
www.sg-micro.com
TX20000.000
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