SGM2053S
500mA, Ultra-Low Dropout,
Low Power, RF Linear Regulator
GENERAL DESCRIPTION
FEATURES
The SGM2053S is a low power, low noise, fast
Operating Input Voltage Range: 1.6V to 5.5V
transient response and low dropout voltage linear
Enable Pin Accept Voltages Higher than the
regulator which is designed using CMOS technology. It
provides
500mA
output
current
capability.
The
Supply Voltage and up to 5.5V
Fixed Output from 1.0V to 3.3V
operating input voltage range is from 1.6V to 5.5V. The
Adjustable Output from 0.8V to 5.0V
adjustable output voltage range is from 0.8V to 5.0V.
500mA Output Current
Other features include logic-controlled shutdown mode,
short-circuit
current
limit
and
thermal
shutdown
protection. The SGM2053S has automatic discharge
function to quickly discharge VOUT in the disabled status.
The SGM2053S is available in Green SOT-23-6 and
SOT-23-5 packages. It operates over an operating
temperature range of -40℃ to +125℃.
Ultra-Low Dropout Voltage:
245mV (TYP) at VOUT = 5.0V
Shutdown Supply Current: 0.05μA (TYP)
High PSRR: 76dB (TYP) at 1kHz
Turn-On Time: 80µs (TYP)
Current Limiting and Thermal Protection
Excellent Load and Line Transient Responses
With Output Automatic Discharge
Stable with Small Case Size Ceramic Capacitors
-40℃ to +125℃ Operating Temperature Range
Available in Green SOT-23-6 and SOT-23-5
Packages
APPLICATIONS
Portable Equipment
Smartphone
Industrial and Medical Equipment
SG Micro Corp
www.sg-micro.com
DECEMBER 2024 – REV. A. 2
500mA, Ultra-Low Dropout,
Low Power, RF Linear Regulator
SGM2053S
PACKAGE/ORDERING INFORMATION
MODEL
PACKAGE
DESCRIPTION
SPECIFIED
TEMPERATURE
RANGE
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
SGM2053S-ADJ
SOT-23-6
-40℃ to +125℃
SGM2053S-ADJXN6G/TR
04TXX
Tape and Reel, 3000
SGM2053S-1.0
SOT-23-6
-40℃ to +125℃
SGM2053S-1.0XN6G/TR
09QXX
Tape and Reel, 3000
SGM2053S-1.05
SOT-23-6
-40℃ to +125℃
SGM2053S-1.05XN6G/TR
0FOXX
Tape and Reel, 3000
SGM2053S-1.1
SOT-23-6
-40℃ to +125℃
SGM2053S-1.1XN6G/TR
0FPXX
Tape and Reel, 3000
SGM2053S-1.8
SOT-23-6
-40℃ to +125℃
SGM2053S-1.8XN6G/TR
0FQXX
Tape and Reel, 3000
SGM2053S-2.8
SOT-23-6
-40℃ to +125℃
SGM2053S-2.8XN6G/TR
0FRXX
Tape and Reel, 3000
SGM2053S-3.0
SOT-23-6
-40℃ to +125℃
SGM2053S-3.0XN6G/TR
0FSXX
Tape and Reel, 3000
SGM2053S-3.3
SOT-23-6
-40℃ to +125℃
SGM2053S-3.3XN6G/TR
0FTXX
Tape and Reel, 3000
SGM2053S-ADJ
SOT-23-5
-40℃ to +125℃
SGM2053S-ADJXN5G/TR
0CNXX
Tape and Reel, 3000
SGM2053S-1.0
SOT-23-5
-40℃ to +125℃
SGM2053S-1.0XN5G/TR
0FUXX
Tape and Reel, 3000
SGM2053S-1.05
SOT-23-5
-40℃ to +125℃
SGM2053S-1.05XN5G/TR
0DGXX
Tape and Reel, 3000
SGM2053S-1.1
SOT-23-5
-40℃ to +125℃
SGM2053S-1.1XN5G/TR
0DHXX
Tape and Reel, 3000
SGM2053S-1.35
SOT-23-5
-40℃ to +125℃
SGM2053S-1.35XN5G/TR
1LHXX
Tape and Reel, 3000
SGM2053S-1.8
SOT-23-5
-40℃ to +125℃
SGM2053S-1.8XN5G/TR
0DIXX
Tape and Reel, 3000
SGM2053S-2.5
SOT-23-5
-40℃ to +125℃
SGM2053S-2.5XN5G/TR
1LIXX
Tape and Reel, 3000
SGM2053S-2.8
SOT-23-5
-40℃ to +125℃
SGM2053S-2.8XN5G/TR
0FVXX
Tape and Reel, 3000
SGM2053S-3.0
SOT-23-5
-40℃ to +125℃
SGM2053S-3.0XN5G/TR
0FWXX
Tape and Reel, 3000
SGM2053S-3.3
SOT-23-5
-40℃ to +125℃
SGM2053S-3.3XN5G/TR
0COXX
Tape and Reel, 3000
MARKING INFORMATION
NOTE: XX = Date Code.
SOT-23-6/SOT-23-5
YYY X X
Date Code - Week
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.
SG Micro Corp
www.sg-micro.com
DECEMBER 2024
2
SGM2053S
ABSOLUTE MAXIMUM RATINGS
IN to GND ............................................................ -0.3V to 6V
EN to GND ........................................................... -0.3V to 6V
OUT, BP, ADJ to GND ........................... -0.3V to (VIN + 0.3V)
Package Thermal Resistance
SOT-23-6, θJA......................................................... 207℃/W
SOT-23-6, θJB........................................................... 70℃/W
SOT-23-6, θJC ........................................................ 124℃/W
SOT-23-5, θJA......................................................... 221℃/W
SOT-23-5, θJB........................................................... 74℃/W
SOT-23-5, θJC ........................................................ 120℃/W
Junction Temperature .................................................+150℃
Storage Temperature Range ....................... -65℃ to +150℃
Lead Temperature (Soldering, 10s) ............................+260℃
ESD Susceptibility
HBM ............................................................................. 3000V
CDM ............................................................................ 1000V
RECOMMENDED OPERATING CONDITIONS
Input Supply Voltage Range ...............................1.6V to 5.5V
Enable Input Voltage Range ..................................0V to 5.5V
Input Effective Capacitance, CIN ......................... 0.5μF (MIN)
Output Effective Capacitance, COUT .................... 1μF to 10μF
Operating Junction Temperature Range ...... -40℃ to +125℃
SG Micro Corp
www.sg-micro.com
500mA, Ultra-Low Dropout,
Low Power, RF Linear Regulator
OVERSTRESS CAUTION
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.
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 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.
DISCLAIMER
SG Micro Corp reserves the right to make any change in
circuit design, or specifications without prior notice.
DECEMBER 2024
3
500mA, Ultra-Low Dropout,
Low Power, RF Linear Regulator
SGM2053S
PIN CONFIGURATIONS
SGM2053S-FIX
(TOP VIEW)
SGM2053S-ADJ
(TOP VIEW)
IN
1
6
OUT
NC
GND
2
5
ADJ
BP
EN
3
4
BP
5
OUT
4
ADJ
IN
1
6
OUT
GND
2
5
EN
3
4
IN
1
GND
2
EN
3
SOT-23-6
SOT-23-6
SGM2053S-FIX
(TOP VIEW)
SGM2053S-ADJ
(TOP VIEW)
5
4
OUT
BP
IN
1
GND
2
EN
3
SOT-23-5
SOT-23-5
PIN DESCRIPTION
PIN
NAME
FUNCTION
1
IN
Input Voltage Supply Pin. It is recommended to use a 1μF or larger ceramic
capacitor from IN pin to ground to get good power supply decoupling.
2
2
GND
3
3
EN
4
4
BP
4
ADJ
̶
NC
5
OUT
SOT-23-6
SOT-23-5
1
5
6
SG Micro Corp
www.sg-micro.com
Ground.
Enable Pin. Drive EN high to turn on the regulator. Drive EN low to turn off the
regulator. The EN pin has an internal pull-down resistance which ensures that the
device is turned off when the EN pin is floated.
Reference-Noise Bypass Pin (fixed voltage version only for SOT-23-5 package).
Bypass with an external capacitor CBP can reduce output noise to very low level. If
not used, this pin must be left floating.
Feedback Input Pin (adjustable voltage version only). Connect this pin to the
external resistor divider to adjust the output voltage. Place the resistors as close as
possible to this pin.
Not Connected (fixed voltage version only).
Regulator Output Pin. It is recommended to use an output capacitor with effective
capacitance in the range of 1μF to 10μF to ensure stability. This ceramic capacitor
should be placed as close as possible to OUT pin.
DECEMBER 2024
4
500mA, Ultra-Low Dropout,
Low Power, RF Linear Regulator
SGM2053S
FUNCTIONAL BLOCK DIAGRAMS
SGM2053S-FIX
IN
OUT
Sub-Regulator
GND
RDIS
Short-Circuit &
Thermal Protection
Voltage
Reference
R1
BP
C1
EN
Shutdown
Figure 1. Fixed Output Regulator Block Diagram
SGM2053S-ADJ (SOT-23-6 Version)
IN
GND
OUT
Sub-Regulator
ADJ
RDIS
Short-Circuit &
Thermal Protection
Voltage
Reference
R1
BP
C1
EN
Shutdown
Figure 2. Adjustable Output Regulator Block Diagram (For SOT-23-5 Version, BP Pin Floating)
SG Micro Corp
www.sg-micro.com
DECEMBER 2024
5
500mA, Ultra-Low Dropout,
Low Power, RF Linear Regulator
SGM2053S
ELECTRICAL CHARACTERISTICS
(VIN = (VOUT(NOM) + 0.5V) or 1.6V (whichever is greater). For SGM2053S-ADJ, VOUT = 0.8V, VADJ = VOUT, CIN = 1μF, COUT = 1μF and
CBP = 22nF, TJ = -40℃ to +125℃, typical values are at TJ = +25℃, unless otherwise noted.)
PARAMETER
Input Voltage Range
SYMBOL
CONDITIONS
VIN
MIN
MAX
UNITS
1.6
5.5
V
-2.5
2.5
-3
3
Output Voltage Accuracy
VOUT
VIN = (VOUT(NOM) + 0.5V) to 5.5V,
IOUT = 0.1mA
TJ = +25℃
Feedback Voltage
VADJ
VIN = (VOUT(NOM) + 0.5V) to 5.5V,
IOUT = 0.1mA
TJ = +25℃
0.78
TJ = -40℃ to +125℃
0.776
ADJ Pin Input Bias Current
IADJ
VADJ = 0.9V
Under-Voltage Lockout
Thresholds
VUVLO
Line Regulation
ΔVLNR
Load Regulation
ΔVLDR/IOUT
0.8
0.82
0.824
%
V
1
20
VIN rising
1.45
1.6
VIN falling
1.3
VIN = (VOUT(NOM) + 0.5V) to 5.5V, IOUT = 0.1mA
0.2
6.5
mV
Fixed voltage version
0.06
0.5
mV/mA
Adjustable voltage version
0.001
0.02
mV/mA
VOUT(NOM) = 0.8V
860
980
VOUT(NOM) = 1.0V
680
840
VOUT(NOM) = 1.05V
645
835
VOUT(NOM) = 1.1V
615
830
VOUT(NOM) = 1.8V
305
450
VOUT(NOM) = 2.8V
200
310
VOUT(NOM) = 3.0V
190
290
VOUT(NOM) = 3.3V
180
280
IOUT = 0.1mA to 500mA
VOUT = VOUT(NOM) × 95%,
IOUT = 300mA
Dropout Voltage
TJ = -40℃ to +125℃
TYP
VDROP
VOUT = VOUT(NOM) × 95%,
IOUT = 500mA
VOUT(NOM) = 5.0V
145
220
VOUT(NOM) = 0.8V
1120
1300
VOUT(NOM) = 1.0V
940
1180
VOUT(NOM) = 1.05V
905
1150
VOUT(NOM) = 1.1V
875
1140
VOUT(NOM) = 1.8V
495
720
VOUT(NOM) = 2.8V
335
500
VOUT(NOM) = 3.0V
315
470
VOUT(NOM) = 3.3V
300
460
245
350
VOUT(NOM) = 5.0V
mV
mV
Output Current Limit
ILIMIT
Short-Circuit Current Limit
ISHORT
VOUT = 0V, VIN = 5.5V
380
No load, VEN = VIN = 5.5V
30
60
µA
0.05
1
μA
Shutdown Current
EN Input Thresholds
EN Input Bias Current
SG Micro Corp
www.sg-micro.com
IQ
ISHDN
VIH
VIL
mA
450
VEN = 0V, VIN = 5.5V
VIN = 1.6V to 5.5V
730
V
VIN = Min((VOUT(NOM) + 2V), 5.5V), TJ = -40℃ to +85℃
VOUT = VOUT(NOM) × 85%
TJ = -40℃ to +125℃
Ground Pin Current
500
nA
mA
1.5
0.4
IENH
VEN = VIN = 5.5V
0.7
1.5
IENL
VEN = 0V, VIN = 5.5V
0.01
1
V
μA
DECEMBER 2024
6
500mA, Ultra-Low Dropout,
Low Power, RF Linear Regulator
SGM2053S
ELECTRICAL CHARACTERISTICS (continued)
(VIN = (VOUT(NOM) + 0.5V) or 1.6V (whichever is greater). For SGM2053S-ADJ, VOUT = 0.8V, VADJ = VOUT, CIN = 1μF, COUT = 1μF and
CBP = 22nF, TJ = -40℃ to +125℃, typical values are at TJ = +25℃, unless otherwise noted.)
PARAMETER
Output Discharge Resistance
Turn-On Time
Power Supply Rejection Ratio
Output Voltage Noise
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
SG Micro Corp
www.sg-micro.com
SYMBOL
RDIS
tON
PSRR
en
CONDITIONS
MIN
VEN = 0V, VOUT = 0.3V, VIN = 4V
From EN rising from 0V to VIN to VOUT(NOM) × 90%,
CBP = 22nF, no load
CBP = 0nF, COUT = 1μF, IOUT = 30mA,
f = 217Hz
VIN = 2.8V, VOUT(NOM) = 1.8V,
f = 1kHz
∆VRIPPLE = 0.2VP-P
CBP = 10nF, COUT = 1μF, IOUT = 30mA,
VIN = 2.8V, VOUT(NOM) = 1.8V,
∆VRIPPLE = 0.2VP-P
TYP
80
μs
82
76
92
f = 1kHz
86
CBP = 10nF, COUT = 1µF, VOUT(NOM) = 1.8V, IOUT = 0mA
f = 10Hz to 100kHz
IOUT = 30mA
UNITS
Ω
f = 217Hz
CBP = 0nF, COUT = 1µF, VOUT(NOM) = 1.8V, IOUT = 0mA
f = 10Hz to 100kHz
IOUT = 30mA
MAX
70
dB
18
100
13
µVRMS
60
TSHDN
160
℃
ΔTSHDN
20
℃
DECEMBER 2024
7
500mA, Ultra-Low Dropout,
Low Power, RF Linear Regulator
SGM2053S
TYPICAL PERFORMANCE CHARACTERISTICS
TJ = +25℃, VIN = VOUT(NOM) + 1V, VOUT = 0.8V, VADJ = VOUT, CIN = 2.2μF, COUT = 1μF and CBP = 22nF, unless otherwise noted.
Line Transient Response
Line Transient Response
VOUT
10mV/div
VOUT
VIN = 3.5V to 5.5V, IOUT = 1mA
VIN = 3.5V to 5.5V, IOUT = 100mA
Time (200μs/div)
Time (200μs/div)
Load Transient Response
Load Transient Response
IOUT
100mV/div
VOUT
200mA/div
200mA/div 100mV/div
IOUT
VOUT
VIN = 2.5V, IOUT = 1mA to 300mA
VIN = 2.5V, IOUT = 1mA to 500mA
Time (40μs/div)
Time (40μs/div)
Turn-On Time
Output Noise Density vs. Frequency
500mV/div
VOUT
VIN = 5V, VEN = 0V to 5V, IOUT = 1mA
Time (50μs/div)
SG Micro Corp
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100mA/div
IIN
10
Output Noise Density (μV/√Hz)
2V/div
VEN
10mV/div
1V/div
VIN
1V/div
VIN
IOUT = 2mA
IOUT = 20mA
IOUT = 300mA
1
0.1
0.01
0.001
0.01
VIN = 1.8V, CIN = 1μF
0.1
1
10
100
Frequency (kHz)
DECEMBER 2024
8
500mA, Ultra-Low Dropout,
Low Power, RF Linear Regulator
SGM2053S
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
TJ = +25℃, VIN = VOUT(NOM) + 1V, VOUT = 0.8V, VADJ = VOUT, CIN = 2.2μF, COUT = 1μF and CBP = 22nF, unless otherwise noted.
0.805
IOUT = 2mA
IOUT = 50mA
IOUT = 300mA
100
0.804
Feedback Voltage (V)
Power Supply Rejection Ratio (dB)
Feedback Voltage vs. Temperature
Power Supply Rejection Ratio vs. Frequency
120
80
60
40
20
0.803
0.802
0.801
0.800
0
0.01
VIN = 1.8V, CIN = 0μF
0.1
1
10
100
1000
0.799
10000
VIN = VEN = 2.2V, IOUT = 0.1mA, CIN = 1μF
-40 -25 -10
5
Temperature (℃)
Frequency (kHz)
Ground Pin Current vs. Temperature
VIN = 6.0V
VIN = 5.5V
VIN = 2.2V
50
300
40
30
20
10
0
Dropout Voltage vs. Temperature
350
Dropout Voltage (mV)
Ground Pin Current (μA)
60
IOUT = 500mA
250
200
150
IOUT = 300mA
100
50
CIN = 1μF
-40 -25 -10
5
0
20 35 50 65 80 95 110 125
VOUT = 5.0V, CIN = 1μF
-40 -25 -10
5
Temperature (℃)
Dropout Voltage vs. Output Voltage
600
500
Dropout Voltage (mV)
250
Dropout Voltage (mV)
20 35 50 65 80 95 110 125
Temperature (℃)
Dropout Voltage vs. Output Current
300
200
150
100
50
0
20 35 50 65 80 95 110 125
400
IOUT = 500mA
300
200
IOUT = 300mA
100
VOUT = 5.0V, CIN = 1μF
0
0.1
0.2
0.3
Output Current (A)
SG Micro Corp
www.sg-micro.com
0.4
0.5
0
CIN = 1μF
1
1.5
2
2.5
3
3.5
4
4.5
5
Output Voltage (V)
DECEMBER 2024
9
500mA, Ultra-Low Dropout,
Low Power, RF Linear Regulator
SGM2053S
TYPICAL APPLICATION CIRCUITS
VIN
1.6V to 5.5V
IN
CIN
1μF
ON
VOUT
OUT
COUT
4.7μF
SGM2053S-FIX
OFF
BP
EN
CBP
22nF
GND
Figure 3. Fixed Output Voltage Version
VIN
1.6V to 5.5V
IN
CIN
1μF
ON
ADJ
SGM2053SADJ
OFF
VOUT
OUT
EN
CFF
VADJ = 0.8V
BP
R1
R2
COUT
4.7μF
CBP
22nF
GND
R1
VOUT
= 0.8V × 1 +
R2
Figure 4. Adjustable Output Voltage Version (SOT-23-6 Version)
VIN
1.6V to 5.5V
IN
CIN
1μF
ON
ADJ
SGM2053SADJ
OFF
VOUT
OUT
CFF
VADJ = 0.8V
R1
R2
COUT
4.7μF
EN
GND
R1
VOUT= 0.8V × 1 +
R2
Figure 5. Adjustable Output Voltage Version (SOT-23-5 Version)
SG Micro Corp
www.sg-micro.com
DECEMBER 2024
10
500mA, Ultra-Low Dropout,
Low Power, RF Linear Regulator
SGM2053S
APPLICATION INFORMATION
Input Capacitor Selection (CIN)
The input decoupling capacitor should be placed as
close as possible to the IN pin to ensure the device
stability. A 1μF or greater X7R or X5R ceramic
capacitor is selected to get good dynamic performance.
When VIN is required to provide large current
instantaneously, a large effective input capacitor is
required. Multiple input capacitors can reduce the
impact from input trace inductance. Adding more input
capacitors is available to restrict the ringing and to keep
it below the device absolute maximum ratings. For COUT
with larger capacitance, it is recommended to choose
the larger capacitance CIN.
Output Capacitor Selection (COUT)
One or more output capacitors are required to maintain
the stability of the LDO, and the output capacitors
should be placed as close as possible to the OUT pin.
In addition, in order to obtain the best transient
performance, it is recommended to use X7R and X5R
ceramic capacitors as output capacitors. Ceramic
capacitors have low equivalent series resistance (ESR),
excellent temperature and DC bias characteristics.
However, it cannot be ignored that the effective
capacitance of ceramic capacitors is affected by
temperature, DC bias and package size.
For example, Figure 6 shows the capacitance and DC
bias and temperature characteristics of 0805, 10V,
10μF±10%, X7R capacitor. Therefore, it is necessary to
evaluate whether the effective capacitance of the
output capacitor can meet the stability requirements of
the LDO in practical applications. In general, a
capacitor in higher voltage rating and a larger package
exhibits better stability, and the effective capacitance
can be obtained from the manufacturer datasheet.
SG Micro Corp
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Capacitance Change Rate with DC Bias (%)
The SGM2053S provides an EN pin as an external chip
enable control to enable/disable the device. When the
regulator is in shutdown state, the shutdown current
consumes as low as 0.05μA (TYP).
Temperature (℃)
20
-55
-25
5
35
65
95
125
10
0
5
-20
0
-40
-5
-60
-10
-80
-100
-15
— DC Bias
— Temperature
0
2
4
6
DC Bias (V)
8
10
12
-20
Capacitance Change Rate with Temp. (℃)
The SGM2053S is a low input voltage, low noise 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 SGM2053S useful in a
variety of applications. The SGM2053S provides the
protection functions for output overload, output
short-circuit condition and overheating.
Figure 6. Capacitance vs. DC Bias and Temperature
Characteristics
The SGM2053S requires a minimum effective
capacitance of 1μF for COUT to ensure stability.
Additionally, COUT with larger capacitance and lower
ESR will help increase the high frequency PSRR and
improve the load transient response.
Adjustable Regulator
The output voltage of the SGM2053S-ADJ can be
adjusted from 0.8V to 5.0V. The ADJ pin will be
connected to two external resistors as shown in Figure 7,
the output voltage is determined by the following
equation:
R1
V=
VADJ × 1+
OUT
R2
(1)
where:
VOUT is output voltage and VADJ is the internal voltage
reference, VADJ = 0.8V.
One parallel capacitor (CFF) with R1 can be used to
improve the feedback loop stability and PSRR,
increase the transient response and reduce the output
noise. Use R2 = 160kΩ to maintain a 5μA minimum
load.
VIN
1.6V to 5.5V
IN
CIN
1μF
ON
OUT
ADJ
SGM2053SADJ
OFF
EN
BP
GND
VOUT
CFF
VADJ = 0.8V
R1
R2
COUT
4.7μF
CBP
22nF
Figure 7. Adjustable Output Voltage Application
(SOT-23-6 Version)
DECEMBER 2024
11
500mA, Ultra-Low Dropout,
Low Power, RF Linear Regulator
SGM2053S
APPLICATION INFORMATION (continued)
Enable Operation
The EN pin of the SGM2053S is used to enable/disable
its device and to deactivate/activate the output
automatic discharge function.
When the EN pin voltage is lower than 0.4V, the device
is in shutdown state. There is no current flowing from IN
to OUT pins. In this state, the automatic discharge
transistor is active to discharge the output voltage
through a 70Ω (TYP) resistor.
When the EN pin voltage is higher than 1.5V, the device
is in active state. The output voltage is regulated to the
expected value and the automatic discharge transistor
is turned off.
The EN pin is pulled down by an internal pull-down
resistor when the EN pin is floated. This resistance will
ensure the SGM2053S in shutdown state and reduce
the power dissipation in system.
Reverse Current Protection
The power transistor has an inherent body diode. This
body diode will be forward biased when VOUT > (VIN +
0.3V). When VOUT > (VIN + 0.3V), the reverse current
flowing from the OUT pin to the IN pin will damage the
SGM2053S. If VOUT > (VIN + 0.3V) event would happen
in system, one external Schottky diode will be added
between OUT pin and IN pin in circuit design to protect
the SGM2053S.
External Diode
Negatively Biased Output
When the output voltage is negative, the chip may not
start up due to parasitic effects. Ensure that the output
is greater than -0.3V under all conditions. If negatively
biased output is excessive and expected in the
application, a Schottky diode can be added between
the OUT pin and GND pin.
VIN
1.6V to 5.5V
IN
CIN
1μF
ON
SGM2053S
OFF
VOUT
OUT
COUT
4.7μF
BP
EN
Schottky
Diode
CBP
22nF
GND
Figure 9. Negatively Biased Output Application
Output Current Limit and Short-Circuit
Protection
When overload events happen, the output current is
internally limited to 730mA (TYP). When the OUT pin is
shorted to ground, the short-circuit protection will limit
the output current to 380mA (TYP).
Thermal Shutdown
When the die temperature exceeds the threshold value
of thermal shutdown, the SGM2053S will be in
shutdown state and it will remain in this state until the
die temperature decreases to +140℃.
Power Dissipation (PD)
VIN
CIN
1μF
ON
OUT
IN
SGM2053S
BP
EN
OFF
GND
VOUT
COUT
4.7μF
CBP
22nF
Figure 8. Reverse Protection Reference Design
SG Micro Corp
www.sg-micro.com
Power dissipation (PD) of the SGM2053S can be
calculated by the equation PD = (VIN - VOUT) × IOUT. The
maximum allowable power dissipation (PD(MAX)) of the
SGM2053S is affected by many factors, including the
difference between junction temperature and ambient
temperature (TJ(MAX) - TA), package thermal resistance
from the junction to the ambient environment (θJA), the
rate of ambient airflow and PCB layout. PD(MAX) can be
approximated by the following equation:
PD(MAX) = (TJ(MAX) - TA)/θJA
(2)
DECEMBER 2024
12
SGM2053S
500mA, Ultra-Low Dropout,
Low Power, RF Linear Regulator
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
DECEMBER 2024 ‒ REV.A.1 to REV.A.2
Page
Updated Pin Description section .......................................................................................................................................................................... 4
AUGUST 2024 ‒ REV.A to REV.A.1
Page
Added SGM2053S-1.35XN5G/TR and SGM2053S-2.5XN5G/TR to Package/Ordering Information section ........................................................ 2
Updated Application Information section ...................................................................................................................................................... 11, 12
Changes from Original (MARCH 2023) to REV.A
Page
Changed from product preview to production data ............................................................................................................................................. All
SG Micro Corp
www.sg-micro.com
DECEMBER 2024
13
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
SOT-23-6
D
e1
e
2.59
E
E1
0.99
b
0.69
0.95
RECOMMENDED LAND PATTERN (Unit: mm)
L
A
A2
ccc C
SEATING PLANE
A1
θ
C
Symbol
c
0.25
Dimensions In Millimeters
MIN
MOD
MAX
A
-
-
1.450
A1
0.000
-
0.150
A2
0.900
-
1.300
b
0.300
-
0.500
c
0.080
-
0.220
D
2.750
-
3.050
E
1.450
-
1.750
E1
2.600
-
3.000
e
0.950 BSC
e1
1.900 BSC
L
0.300
-
0.600
θ
0°
-
8°
ccc
0.100
NOTES:
1. This drawing is subject to change without notice.
2. The dimensions do not include mold flashes, protrusions or gate burrs.
3. Reference JEDEC MO-178.
SG Micro Corp
www.sg-micro.com
TX00034.001
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
SOT-23-5
1.90
D
e1
E1
2.59
E
0.99
b
e
0.95
0.69
RECOMMENDED LAND PATTERN (Unit: mm)
L
A2
A
ccc C
SEATING PLANE
A1
θ
C
Symbol
c
0.25
Dimensions In Millimeters
MIN
MOD
MAX
A
-
-
1.450
A1
0.000
-
0.150
A2
0.900
-
1.300
b
0.300
-
0.500
c
0.080
-
0.220
D
2.750
-
3.050
E
1.450
-
1.750
E1
2.600
-
3.000
e
0.950 BSC
e1
1.900 BSC
L
0.300
-
0.600
θ
0°
-
8°
ccc
0.100
NOTES:
1. This drawing is subject to change without notice.
2. The dimensions do not include mold flashes, protrusions or gate burrs.
3. Reference JEDEC MO-178.
SG Micro Corp
www.sg-micro.com
TX00033.001
PACKAGE INFORMATION
TAPE AND REEL INFORMATION
REEL DIMENSIONS
TAPE DIMENSIONS
P2
W
P0
Q1
Q2
Q1
Q2
Q1
Q2
Q3
Q4
Q3
Q4
Q3
Q4
B0
Reel Diameter
A0
P1
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
Diameter
Reel Width
W1
(mm)
A0
(mm)
B0
(mm)
K0
(mm)
P0
(mm)
P1
(mm)
P2
(mm)
W
(mm)
Pin1
Quadrant
SOT-23-6
7"
9.5
3.23
3.17
1.37
4.0
4.0
2.0
8.0
Q3
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
DD0001
Package Type
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)
Pizza/Carton
7″ (Option)
368
227
224
8
7″
442
410
224
18
SG Micro Corp
www.sg-micro.com
DD0002
Reel Type
TX20000.000