SGM2028 [SGMICRO]
500mA, Ultra Low Dropout, Low Power, RF Linear Regulator;
| 型号： | SGM2028 |
| 厂家： | 
Shengbang Microelectronics Co, Ltd |
| 描述： | 500mA, Ultra Low Dropout, Low Power, RF Linear Regulator |
| 文件： | 总13页 (文件大小：1447K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SGM2028
500mA, Ultra-Low Dropout,
Low Power, RF Linear Regulator
GENERAL DESCRIPTION
FEATURES
The SGM2028 is a low dropout voltage, low power and
low noise RF linear regulator. It is capable of supplying
500mA output current with typical dropout voltage of
only 270mV. The operating input voltage range is from
2.5V to 5.5V.
Operating Input Voltage Range: 2.5V to 5.5V
Fixed Output Voltages: 2.8V, 3.0V, 3.3V
Adjustable Output Voltage Range: 1.2V to 5.0V
500mA Guaranteed Output Current
Output Voltage Accuracy: ±3% at +25℃
High PSRR: 73dB (TYP) at 1kHz
Other features include logic-controlled shutdown mode,
short-circuit current limit and thermal shutdown
protection.
Ultra-Low Dropout Voltage:
270mV (TYP) at 500mA
Low Output Noise: 30μVRMS (TYP)
Thermal Shutdown Protection
The SGM2028 is available in a Green SOT-23-5
package. It operates over an operating temperature
range of -40℃ to +85℃.
Output Current Limit
SGM2028-2.8, SGM2028-3.0 and SGM2028-ADJ:
110kΩ Pull Down Resistor at EN Pin
SGM2028-3.3: No Pull Down Resistor at EN Pin
-40℃ to +85℃ Operating Temperature Range
Available in a Green SOT-23-5 Package
APPLICATIONS
Modems
MP3 Players
Cellular Telephones
PCMCIA Cards
Palmtop Computers
Portable Electronics
SG Micro Corp
JUNE 2020 – REV.B.4
www.sg-micro.com
500mA, Ultra-Low Dropout,
SGM2028
Low Power, RF Linear Regulator
PACKAGE/ORDERING INFORMATION
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
MODEL
VOUT (V)
DESCRIPTION
SOT-23-5
SGM2028-2.8
SGM2028-3.0
SGM2028-3.3
SGM2028-ADJ
2.8
3.0
SGM2028-2.8YN5G/TR
SGM2028-3.0YN5G/TR
SGM2028-3.3YN5G/TR
SGM2028-ADJYN5G/TR
S58XX
G68XX
S55XX
S4BXX
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
-40℃ to +85℃
-40℃ to +85℃
-40℃ to +85℃
-40℃ to +85℃
SOT-23-5
3.3
SOT-23-5
ADJ
SOT-23-5
MARKING INFORMATION
NOTE: XX = Date Code.
YYY X X
Date Code - Month
Date Code - Year
Serial Number
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.
ABSOLUTE MAXIMUM RATINGS
OVERSTRESS CAUTION
IN to GND ............................................................ -0.3V to 6V
Output Short-Circuit Duration.......................................Infinite
EN to GND.............................................. -0.3V to (VIN +0.3V)
OUT, BP/FB to GND.............................. -0.3V to (VIN + 0.3V)
Power Dissipation, PD @ TA = +25℃
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.
SOT-23-5.....................................................................0.53W
Package Thermal Resistance
SOT-23-5, θJA .......................................................... 235℃/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.
Failureto observe proper handlingand installation procedures
can cause damage. ESD damage can range from subtle
performance degradation to complete 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.............................................................................4000V
MM.................................................................................400V
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range ...........................................2.5V to 5.5V
Operating Temperature Range.......................-40℃ to +85℃
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
JUNE 2020
2
500mA, Ultra-Low Dropout,
SGM2028
Low Power, RF Linear Regulator
PIN CONFIGURATION
(TOP VIEW)
OUT
5
IN
GND
EN
1
2
3
4
BP/FB
SOT-23-5
PIN DESCRIPTION
PIN
1
NAME
IN
FUNCTION
Input Supply Voltage Pin. It is recommended to use a 1μF or larger ceramic capacitor from IN pin
to ground.
2
GND
EN
Ground.
Enable Pin. Drive EN high to turn on the regulator. Drive EN low to turn off the regulator. This pin
must be connected to IN pin if enable functionality is not used.
3
Reference-Noise Bypass Pin (fixed voltage version only). Bypass with an external capacitor CBP
can reduce output noise to very low level.
BP
4
5
Feedback Voltage Input Pin (adjustable voltage version only). Connect this pin to the midpoint of
an external resistor divider to adjust the output voltage. Place the resistors as close as possible
to this pin.
Regulator Output Pin. It is recommended to use 1μF or larger ceramic output capacitor from
OUT pin to ground. The capacitor should be located very close to this pin.
FB
OUT
SG Micro Corp
www.sg-micro.com
JUNE 2020
3
500mA, Ultra-Low Dropout,
SGM2028
Low Power, RF Linear Regulator
ELECTRICAL CHARACTERISTICS
(VIN = VOUT (NOMINAL) + 0.5V or 2.5V, whichever is greater, Full = -40℃ to +85℃. For SGM2028-ADJ, VOUT = 3.3V, unless
otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
TEMP
+25℃
+25℃
+25℃
+25℃
+25℃
MIN
2.5
-3
TYP
MAX
5.5
UNITS
V
Input Voltage
VIN
Output Voltage Accuracy
Maximum Output Current
Output Current Limit
IOUT = 0.1mA
+3
%
500
510
mA
mA
µA
ILIMIT
IQ
Ground Pin Current
No load, VEN = 2V
115
54
220
90
IOUT = 100mA
Dropout Voltage (1)
IOUT = 300mA
162
270
0.02
270
420
0.095
mV
+25℃
IOUT = 500mA
Line Regulation
Load Regulation
ΔVLNR
ΔVLDR
VIN = VOUT + 0.5V to 5.5V, IOUT = 1mA
IOUT = 0.1mA to 500mA, COUT = 1µF
%/V
+25℃
+25℃
0.0025 0.0075
30
%/mA
f = 10Hz to 100kHz, CBP = 0.01µF,
COUT = 10µF
Output Voltage Noise
en
µVRMS
+25℃
f = 217Hz
f = 1kHz
77
73
dB
dB
+25℃
+25℃
C
BP = 0.1μF, IOUT = 50mA,
Power Supply Rejection Ratio
Shutdown
PSRR
COUT = 1μF, VIN = VOUT + 1V
VIH
VIL
Full
Full
1.5
EN Input Threshold
VIN = 2.5V to 5.5V
VEN = 0.3V
V
0.3
Shutdown Supply Current
Shutdown Exit Delay (2)
IQ(SHDN)
0.01
30
μA
μs
+25℃
+25℃
CBP = 0.01μF, COUT =1μF, no load
Thermal Protection
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
TSHDN
150
15
℃
℃
ΔTSHDN
NOTES:
1. The dropout voltage is defined as VIN - VOUT, when VOUT is 100mV below the value of VOUT for VIN = VOUT + 0.5V.
(Only applicable for VOUT = +2.5V to +5.0V.)
2. Time needed for VOUT to reach 90% of final value.
SG Micro Corp
www.sg-micro.com
JUNE 2020
4
500mA, Ultra-Low Dropout,
SGM2028
Low Power, RF Linear Regulator
TYPICAL APPLICATION CIRCUITS
VIN
VOUT
2.5V to 5.5V
OUT
IN
CIN
1μF
COUT
1μF
SGM2028
R1
-ADJ
FB
EN
ON
OFF
GND
R2
NOTE: Choose R2 = 47kΩ to maintain a 26μA minimum load. Calculate the value for R1 using the following equation:
VOUT
R1 = R2 ×
-1
1.206V
VIN
VOUT
2.5V to 5.5V
IN
OUT
CIN
1μF
COUT
1μF
SGM2028
EN BP
ON
CBP
0.01μF
OFF
GND
SG Micro Corp
www.sg-micro.com
JUNE 2020
5
500mA, Ultra-Low Dropout,
SGM2028
Low Power, RF Linear Regulator
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = VOUT (NOMINAL) + 0.5V or 2.5V, whichever is greater, CIN = 1μF, COUT = 1μF, CBP = 0.01μF, TA = +25℃, unless otherwise
noted.
SG Micro Corp
www.sg-micro.com
JUNE 2020
6
500mA, Ultra-Low Dropout,
SGM2028
Low Power, RF Linear Regulator
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = VOUT (NOMINAL) + 0.5V or 2.5V, whichever is greater, CIN = 1μF, COUT = 1μF, CBP = 0.01μF, TA = +25℃, unless otherwise
noted.
Pow er Supply Rejection Ratio vs. Frequency
Dropout Voltage vs. Load Current
100
80
60
40
20
350
300
250
200
150
100
50
TA = +85℃
COUT = 10μF
TA = -40℃
C
BP = 0.1μF
ILOAD = 50mA
VIN = 4.3V to 4.4V
VOUT = 3.3V
TA = +25℃
SGM2028-3.3
COUT = 1μF
0
0.01
0.1
1
10
100
1000
0
100
200
300
400
500
Load Current (mA)
Frequency (kHz)
Output Voltage vs. Load Current
Output Voltage vs. Input Voltage
No Load
3.5
3.4
3.3
3.2
3.1
4
3.2
2.4
1.6
0.8
0
SGM2028-3.3
400 500
SGM2028-3.3
4.5 5 5.5
0
0.5
1
1.5
2
2.5
3
3.5
4
0
100
200
300
Input Voltage (V)
Load Current (mA)
Normalized Output Voltage vs. Temperature
Ground Pin Current vs. Load Current
350
300
250
200
150
100
1.006
Normalized to TA = +25℃
ILOAD = 0.1mA
1.004
1.002
1.000
0.998
0.996
0.994
SGM2028-3.3
400
SGM2028-3.3
0
100
200
300
500
-40
-15
10
35
60
85
Load Current (mA)
Temperature (℃)
SG Micro Corp
www.sg-micro.com
JUNE 2020
7
500mA, Ultra-Low Dropout,
SGM2028
Low Power, RF Linear Regulator
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = VOUT (NOMINAL) + 0.5V or 2.5V, whichever is greater, CIN = 1μF, COUT = 1μF, CBP = 0.01μF, TA = +25℃, unless otherwise
noted.
Ground Pin Current vs. Temperature
Ground Pin Current vs. Input Voltage
160
140
120
100
80
160
145
130
115
100
85
No Load
No Load
60
40
20
SGM2028-3.3
4.5 5 5.5
SGM2028-3.3
60 85
70
0
-40
-15
10
35
0
0.5
1
1.5
2
2.5
3
3.5
4
Input Voltage (V)
Temperature (℃)
SG Micro Corp
www.sg-micro.com
JUNE 2020
8
500mA, Ultra-Low Dropout,
SGM2028
Low Power, RF Linear Regulator
APPLICATION INFORMATION
The SGM2028 is a low power and low dropout LDO
and provides 500mA output current. These features
make the device a reliable solution to solve many
challenging problems in the generation of clean and
accurate power supply. The high performance also
makes the SGM2028 useful in a variety of applications.
The SGM2028 provides protection functions for output
overload, output short-circuit condition and overheating.
Enable Control
The SGM2028 uses the EN pin to enable/disable its
device.
When the EN pin voltage is lower than 0.3V, the device
is in shutdown state. There is no current flowing from IN
pin to OUT pin.
When the EN pin voltage is higher than 1.5V, the
device is in active state. The output voltage is regulated
to expected value
Input Capacitor Selection (CIN)
The input decoupling capacitor is necessary to be
connected as close as possible to the IN pin for
ensuring the device stability. 1μF or larger X7R or X5R
ceramic capacitor is selected to get good dynamic
performance.
Output Current Limit and Short-Circuit
Protection
When overload events happen, the output current is
internally limited to 510mA (MIN). When the OUT pin is
shorted to ground, the short-circuit protection will limit
the output current.
When VIN is required to provide large current
instantaneously, a large effective input capacitor is
required. Multiple input capacitors can limit the input
tracking inductance. Adding more input capacitors is
available to restrict the ringing and to keep it below the
device absolute maximum ratings.
Thermal Shutdown
The SGM2028 can detect the temperature of die. When
the die temperature exceeds the threshold value of
thermal shutdown, the SGM2028 will be in shutdown
state and it will remain in this state until the die
temperature decreases to +135℃.
Output Capacitor Selection (COUT
)
The output decoupling capacitor should be located as
close as possible to the OUT pin. 1μF or larger X7R or
X5R ceramic capacitor is selected to get good dynamic
performance. The minimum effective capacitance of
COUT that SGM2028 can remain stable is 0.5μF. For
ceramic capacitor, temperature, DC bias and package
size will change the effective capacitance, so enough
margin of COUT must be considered in design. Larger
capacitance and lower ESR COUT will help improve the
load transient response and increase the high
frequency PSRR.
Layout Guidelines
To get good PSRR, low output noise and high transient
response performance, the input and output bypass
capacitors must be placed as close as possible to the
IN pin and OUT pin separately. VIN and VOUT had better
use separate ground planes and these ground planes
are single point connected to the GND pin.
SG Micro Corp
www.sg-micro.com
JUNE 2020
9
500mA, Ultra-Low Dropout,
SGM2028
Low Power, RF Linear Regulator
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
JUNE 2020 ‒ REV.B.3 to REV.B.4 ...................................................................................................................................................................Page
Updated Absolute Maximum Ratings section ...........................................................................................................................................................2
OCTOBER 2016 ‒ REV.B.2 to REV.B.3...........................................................................................................................................................Page
Added SGM2028-3.0 version (110kΩ Pull Down Resistor at EN Pin).....................................................................................................................All
MAY 2016 ‒ REV.B.1 to REV.B.2.....................................................................................................................................................................Page
Changed Normalized Output Voltage vs. Temperature.............................................................................................................................................7
DECEMBER 2013 ‒ REV.B to REV.B.1 ...........................................................................................................................................................Page
Added 2.8V Output Voltage and ADJ......................................................................................................................................................................All
Changed Electrical Characteristics section...............................................................................................................................................................4
Changed Typical Application Circuits section............................................................................................................................................................5
Changed Typical Performance Characteristics section.........................................................................................................................................7, 8
JUNE 2013 ‒ REV.A.4 to REV.B ......................................................................................................................................................................Page
Deleted 2.8V Output Voltage...................................................................................................................................................................................All
SG Micro Corp
www.sg-micro.com
JUNE 2020
10
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
SOT-23-5
1.90
D
e1
2.59
E1
E
0.99
b
e
0.95
0.69
RECOMMENDED LAND PATTERN (Unit: mm)
L
A
A1
c
θ
0.2
A2
Dimensions
In Millimeters
Dimensions
In Inches
Symbol
MIN
MAX
1.250
0.100
1.150
0.500
0.200
3.020
1.700
2.950
MIN
MAX
0.049
0.004
0.045
0.020
0.008
0.119
0.067
0.116
A
A1
A2
b
1.050
0.000
1.050
0.300
0.100
2.820
1.500
2.650
0.041
0.000
0.041
0.012
0.004
0.111
0.059
0.104
c
D
E
E1
e
0.950 BSC
1.900 BSC
0.037 BSC
0.075 BSC
e1
L
0.300
0°
0.600
8°
0.012
0°
0.024
8°
θ
SG Micro Corp
www.sg-micro.com
TX00033.000
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
SOT-23-5
7″
9.5
3.20
3.20
1.40
4.0
4.0
2.0
8.0
Q3
SG Micro Corp
www.sg-micro.com
TX10000.000
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
7″ (Option)
7″
368
442
227
410
224
224
8
18
SG Micro Corp
www.sg-micro.com
TX20000.000
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