SGM2211
20V, 500mA, Low Noise,
Low Dropout Linear Regulator
GENERAL DESCRIPTION
FEATURES
The SGM2211 a low noise, high PSRR, fast transient
● Input Voltage Range: 2.7V to 20V
response, and low dropout voltage linear regulator
● Output Voltage Accuracy: ±1% at +25℃
which is designed using CMOS technology. It provides
● Adjustable Output Voltages: 1.2V to (VIN - VDROP)
500mA output current capability. The operating input
● Low Noise:
voltage range is from 2.7V to 20V. The adjustable
9.3μVRMS at VOUT = 1.2V
output voltage range is from 1.2V to (VIN - VDROP).
11μVRMS at VOUT = 2.8V
Other features include logic-controlled shutdown mode,
short-circuit
current
limit
and
thermal
shutdown
protection. The SGM2211 has automatic discharge
function to quickly discharge VOUT in the disabled status.
The SGM2211 is available in Green TDFN-2×2-6AL
and SOT-23-5 packages. It operates over an operating
temperature range of -40℃ to +125℃.
14μVRMS at VOUT = 5.0V
● PSRR (VIN = VOUT(NOM) + 1V):
100dB at 1kHz
83dB at 10kHz
52dB at 100kHz
55dB at 1MHz
● Low Dropout Voltage:
360mV (TYP) at 500mA Load when VOUT = 5.0V
● Low Quiescent Current: 39μA (TYP)
APPLICATIONS
● Shutdown Current: 1.2μA (TYP)
● Stable with a 2.2μF Ceramic Output Capacitor
Instrumentation
● Reverse Current Protection when VOUT > VIN
Precision ADC and DAC
● Foldback Current-Limit Protection when VOUT is
Precision Amplifiers in Industrial Equipment
Shorted to GND
Low Noise VCO
● Automatic VOUT Discharge when Disabled
RF System
● Programmable Precision Enable
Medical Equipment
● Programmable Soft-Start (TDFN Package Only)
● -40℃ to +125℃ Operating Temperature Range
● Available in Green TDFN-2×2-6AL and SOT-23-5
Packages
SG Micro Corp
www.sg-micro.com
MARCH 2020 – REV. A. 1
20V, 500mA, Low Noise,
Low Dropout Linear Regulator
SGM2211
PACKAGE/ORDERING INFORMATION
MODEL
PACKAGE
DESCRIPTION
SPECIFIED
TEMPERATURE
RANGE
ORDERING
NUMBER
SGM2211-1.2
TDFN-2×2-6AL
-40℃ to +125℃
SGM2211-1.2XTDI6G/TR
SGM2211-1.5
TDFN-2×2-6AL
-40℃ to +125℃
SGM2211-1.5XTDI6G/TR
SGM2211-1.8
TDFN-2×2-6AL
-40℃ to +125℃
SGM2211-1.8XTDI6G/TR
SGM2211-2.5
TDFN-2×2-6AL
-40℃ to +125℃
SGM2211-2.5XTDI6G/TR
SGM2211-2.8
TDFN-2×2-6AL
-40℃ to +125℃
SGM2211-2.8XTDI6G/TR
SGM2211-3.0
TDFN-2×2-6AL
-40℃ to +125℃
SGM2211-3.0XTDI6G/TR
SGM2211-3.3
TDFN-2×2-6AL
-40℃ to +125℃
SGM2211-3.3XTDI6G/TR
SGM2211-3.8
TDFN-2×2-6AL
-40℃ to +125℃
SGM2211-3.8XTDI6G/TR
SGM2211-4.2
TDFN-2×2-6AL
-40℃ to +125℃
SGM2211-4.2XTDI6G/TR
SGM2211-5.0
TDFN-2×2-6AL
-40℃ to +125℃
SGM2211-5.0XTDI6G/TR
SGM2211-1.2
SOT-23-5
-40℃ to +125℃
SGM2211-1.2XN5G/TR
C11XX
Tape and Reel, 3000
SGM2211-1.5
SOT-23-5
-40℃ to +125℃
SGM2211-1.5XN5G/TR
C12XX
Tape and Reel, 3000
SGM2211-1.8
SOT-23-5
-40℃ to +125℃
SGM2211-1.8XN5G/TR
C13XX
Tape and Reel, 3000
SGM2211-2.5
SOT-23-5
-40℃ to +125℃
SGM2211-2.5XN5G/TR
C14XX
Tape and Reel, 3000
SGM2211-2.8
SOT-23-5
-40℃ to +125℃
SGM2211-2.8XN5G/TR
C15XX
Tape and Reel, 3000
SGM2211-3.0
SOT-23-5
-40℃ to +125℃
SGM2211-3.0XN5G/TR
C16XX
Tape and Reel, 3000
SGM2211-3.3
SOT-23-5
-40℃ to +125℃
SGM2211-3.3XN5G/TR
C17XX
Tape and Reel, 3000
SGM2211-3.8
SOT-23-5
-40℃ to +125℃
SGM2211-3.8XN5G/TR
C18XX
Tape and Reel, 3000
SGM2211-4.2
SOT-23-5
-40℃ to +125℃
SGM2211-4.2XN5G/TR
C19XX
Tape and Reel, 3000
SGM2211-5.0
SOT-23-5
-40℃ to +125℃
SGM2211-5.0XN5G/TR
C1AXX
Tape and Reel, 3000
SGM2211-ADJ
SOT-23-5
-40℃ to +125℃
SGM2211-ADJXN5G/TR
C2FXX
Tape and Reel, 3000
PACKAGE
MARKING
C1B
XXXX
C1C
XXXX
C1D
XXXX
C1E
XXXX
C1F
XXXX
C20
XXXX
C21
XXXX
C22
XXXX
C23
XXXX
C24
XXXX
PACKING
OPTION
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
MARKING INFORMATION
NOTE: XX = Date Code. XXXX = Date Code and Trace Code.
TDFN-2×2-6AL
SOT-23-5
YYY
X XXX
YYY X X
Serial Number
Trace Code
Date Code - Year
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
MARCH 2020
2
SGM2211
ABSOLUTE MAXIMUM RATINGS
20V, 500mA, Low Noise,
Low Dropout Linear Regulator
OVERSTRESS CAUTION
VIN to GND ........................................................ -0.3V to 24V
VOUT to GND .................................................... -0.3V to 24V
EN to GND ......................................................... -0.3V to 24V
SENSE/ADJ to GND .......................................... -0.3V to 24V
SS to GND ................... -0.3V to VIN or 6V (whichever is less)
Package Thermal Resistance
TDFN-2×2-6AL, θJA.................................................. 100℃/W
TDFN-2×2-6AL, θJB.................................................... 37℃/W
TDFN-2×2-6AL, θJC ................................................... 77℃/W
SOT-23-5, θJA .......................................................... 182℃/W
SOT-23-5, θJB ............................................................ 44℃/W
SOT-23-5, θJC ............................................................ 70℃/W
Junction Temperature .................................................+150℃
Storage Temperature Range ....................... -65℃ to +150℃
Lead Temperature (Soldering, 10s) ............................+260℃
ESD Susceptibility
HBM ............................................................................. 8000V
CDM ............................................................................ 1000V
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.
RECOMMENDED OPERATING CONDITIONS
SG Micro Corp reserves the right to make any change in
circuit design, or specifications without prior notice.
Input Voltage Range ............................................2.7V to 20V
Input Effective Capacitance, CIN ......................... 1.5μF (MIN)
Output Effective Capacitance, COUT ................. 1.5μF to 10μF
Operating Junction Temperature Range ...... -40℃ to +125℃
SG Micro Corp
www.sg-micro.com
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
MARCH 2020
3
20V, 500mA, Low Noise,
Low Dropout Linear Regulator
SGM2211
PIN CONFIGURATIONS
(TOP VIEW)
VOUT
1
6
VIN
SENSE/ADJ
2
5
SS
GND
3
4
EN
TDFN-2×2-6AL
SGM2211-Fixed Output
VIN
1
GND
2
EN
3
5
SGM2211-ADJ
VOUT
4
NC
SOT-23-5
VIN
1
GND
2
EN
3
5
VOUT
4
ADJ
SOT-23-5
PIN DESCRIPTION
PIN
TDFN-2×2-6AL
SOT-23-5
NAME
1
5
VOUT
2
‒
SENSE/ADJ
3
2
GND
4
3
EN
5
‒
SS
6
1
VIN
NC
‒
4
Exposed
Pad
‒
SG Micro Corp
www.sg-micro.com
ADJ
‒
FUNCTION
Regulator Output Pin. It is recommended to use a ceramic capacitor with
effective capacitance in the range of 1.5μF to 10μF to get good power
supply decoupling. This ceramic capacitor should be placed as close as
possible to VOUT pin.
Sense Input (SENSE). Connect to load. An external resistor divider may
also set the output voltage higher than the fixed output voltage (ADJ).
Ground.
Enable Pin. Drive EN high to turn on the regulator. Drive EN low to turn off
the regulator.
Soft-Start Pin. The soft-start time is determined by an external capacitor
connected to this pin.
Input Voltage Supply Pin. It is recommended to use a ceramic capacitor
with a minimum effective capacitance of 1.5μF from VIN pin to ground.
Not Connected (fixed voltage version only).
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.
Exposed Pad. Connect it to a large ground plane to maximize thermal
performance; this pad is not an electrical connection point.
MARCH 2020
4
20V, 500mA, Low Noise,
Low Dropout Linear Regulator
SGM2211
ELECTRICAL CHARACTERISTICS
(VIN = (VOUT(NOM) + 1V) or 2.7V (whichever is greater), VEN = VIN, IOUT = 10mA, CIN = COUT = 2.2μF and CSS = 0nF, TJ = -40℃ to +125℃,
typical values are at TJ = +25℃, unless otherwise noted.)
PARAMETER
Input Voltage Range
Under-Voltage Lockout Thresholds
SYMBOL
CONDITIONS
MIN
VIN
VUVLO
VIN falling
2.16
62
1200
VEN = GND
1.2
2.2
VEN = GND, VIN = 20V
1.3
2.5
IADJ
VADJ = VOUT(NOM) + 0.1V
Output Voltage Accuracy
VOUT
VIN = (VOUT(NOM) + 1V) to 20V,
IOUT = 100μA to 500mA, TJ = +25℃
VIN = (VOUT(NOM) + 1V) to 20V,
IOUT = 100μA to 500mA, TJ =-40℃ to +125℃
Feedback Voltage
VADJ
6
-1
1
-1.6
1.6
1.188
VIN = (VOUT(NOM) + 1V) to 20V,
IOUT = 100μA to 500mA, TJ =-40℃ to +125℃
1.181
IREV-INPUT
Line Regulation
∆VOUT
VIN = (VOUT(NOM) + 1V) to 20V
∆VIN × VOUT
VEN = GND, VIN = 0V, VOUT = 20V
IOUT = 100μA to 500mA
IOUT = 500mA
ILIMIT
Output Voltage Noise
en
PSRR
VOUT = VOUT(NOM) - 1V
VIN = VOUT(NOM) + 1V
Leakage Current
1.219
1
µA
0.001
0.007
%/V
mV
26
VOUT(NOM) = 3.0V
450
680
VOUT(NOM) = 5.0V
360
580
1
3
VOUT = 1.2V
9.3
VOUT = 2.8V
11
VOUT = 5.0V
14
f = 1kHz
100
f = 10kHz
83
f = 100kHz
52
mV
μA
0.80
A
µVRMS
dB
55
VIH
Logic high, VIN = 2.7V to 20V
1.120
1.210
1.295
VIL
Logic low, VIN = 2.7V to 20V
1.050
1.120
1.195
IEN-LKG
1
VEN = VIN, VIN = 2.7V to 20V
0.1
tSTR
From EN rising from 0V to VIN to 0.9 × VOUT, VOUT = 1.2V
150
Output Discharge Resistance
RDIS
VEN = 0V, VOUT = 0.5V
100
Thermal Shutdown Hysteresis
V
0.05
Start-Up Time
Thermal Shutdown Temperature
1.212
730
f = 1MHz
Precision EN Input
%
3
0.51
µA
nA
500
(2)
f = 10Hz to 100kHz, IOUT = 1mA
1.2
V
µA
VOUT(NOM) = 2.5V
SSI-SOURCE SS = GND
Output Current Limit
Power Supply Rejection Ratio
-6
IOUT = 10mA, TJ = +25℃
Input Reverse Current
Soft-Start Source Current
2.33
39
ADJ Input Bias Current
VDROP
V
2.70
980
ISHDN
(1)
20
2.52
IOUT = 500mA
Shutdown Current
Dropout Voltage
UNITS
IOUT = 0µA
IGND
ΔVOUT
MAX
2.7
VIN rising
Operating Supply Current
Load Regulation
TYP
V
µA
μs
140
Ω
TSHDN
160
℃
ΔTSHDN
20
℃
NOTES:
1. The dropout voltage is defined as the difference between VIN and VOUT when VOUT falls to 95% × VOUT(NOM).
2. VOUT = VOUT(NOM) - 0.2V when VOUT = 1.2V.
SG Micro Corp
www.sg-micro.com
MARCH 2020
5
20V, 500mA, Low Noise,
Low Dropout Linear Regulator
SGM2211
TYPICAL PERFORMANCE CHARACTERISTICS
TJ = +25℃, VIN = (VOUT(NOM) + 1V) or 2.7V (whichever is greater), VEN = VIN, IOUT = 10mA, CIN = COUT = 2.2μF, unless otherwise
noted.
Line Transient Response
Line Transient Response
VIN
10mV/div
10mV/div
VOUT
500mV/div
500mV/div
VIN
VOUT
VOUT = 3.0V, IOUT = 500mA, VIN= 4.0V to 5.0V
VOUT = 5.0V, IOUT = 500mA, VIN= 6.0V to 7.0V
Time (20μs/div)
Time (20μs/div)
Load Transient Response
Load Transient Response
VOUT
200mA/div 100mV/div
200mA/div 100mV/div
IOUT
IOUT
VOUT
VOUT = 5.0V, IOUT = 1mA to 500mA
VOUT = 3.0V, IOUT = 1mA to 500mA
Time (100μs/div)
Time (100μs/div)
Power Supply Rejection Ratio vs. Frequency
Power Supply Rejection Ratio vs. Frequency
VOUT = 3.0V
100
80
60
40
20
VIN = 3.5V
VIN = 4.0V
VIN = 6.0V
0
0.01
0.1
1
10
100
Frequency (kHz)
SG Micro Corp
www.sg-micro.com
1000
10000
120
Power Supply Rejection Ratio (dB)
Power Supply Rejection Ratio (dB)
120
VOUT = 5.0V
100
80
60
40
20
VIN = 5.5V
VIN = 6.0V
VIN = 8.0V
0
0.01
0.1
1
10
100
1000
10000
Frequency (kHz)
MARCH 2020
6
20V, 500mA, Low Noise,
Low Dropout Linear Regulator
SGM2211
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
TJ = +25℃, VIN = (VOUT(NOM) + 1V) or 2.7V (whichever is greater), VEN = VIN, IOUT = 10mA, CIN = COUT = 2.2μF, unless otherwise
noted.
Output Noise Density vs. Frequency
10000
VOUT = 3.0V
Output Noise Density (nV/√Hz)
Output Noise Density (nV/√Hz)
10000
Output Noise Density vs. Frequency
1000
100
10
IOUT = 100μA
IOUT = 10mA
IOUT = 200mA
1
0.01
0.1
1
10
VOUT = 5.0V
1000
100
10
IOUT = 100μA
IOUT = 10mA
IOUT = 200mA
1
0.01
100
0.1
Frequency (kHz)
Output Noise Density (nV/√Hz)
Output Noise Density (nV/√Hz)
100
IOUT = 100μA
IOUT = 10mA
IOUT = 200mA
0.1
1
10
10
6V No Noise Reduction
6V Noise Reduction
12V No Noise Reduction
12V Noise Reduction
0.1
1
10
100
Frequency (kHz)
Output Voltage vs. Input Voltage in Dropout
Output Voltage vs. Input Voltage in Dropout
3.0
5.5
2.8
2.6
2.4
2.2
2.0
IOUT = 5mA
IOUT = 200mA
IOUT = 500mA
1.8
2.9
3.1
3.3
Input Voltage (V)
SG Micro Corp
www.sg-micro.com
3.5
3.7
VOUT = 5.0V
5.0
Output Voltage (V)
Output Voltage (V)
100
1
0.01
100
VOUT = 3.0V
2.7
1000
Frequency (kHz)
3.2
1.6
10000
VOUT = 1.2V
1
0.01
100
Output Voltage with/without Noise Reduction
1000
10
10
Frequency (kHz)
Output Noise Density vs. Frequency
10000
1
4.5
4.0
3.5
3.0
2.5
IOUT = 5mA
IOUT = 200mA
IOUT = 500mA
2.0
1.5
2.7
3.3
3.9
4.5
5.1
5.7
Input Voltage (V)
MARCH 2020
7
20V, 500mA, Low Noise,
Low Dropout Linear Regulator
SGM2211
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
TJ = +25℃, VIN = (VOUT(NOM) + 1V) or 2.7V (whichever is greater), VEN = VIN, IOUT = 10mA, CIN = COUT = 2.2μF, unless otherwise
noted.
Output Voltage vs. Input Voltage
3.006
5.006
3.004
5.004
Output Voltage (V)
Output Voltage (V)
Output Voltage vs. Input Voltage
3.002
3.000
2.998
2.996
2.994
5.002
5.000
4.998
4.996
VOUT = 3.0V, IOUT = 100μA
4
6
8
10
12
14
16
18
4.994
20
VOUT = 5.0V, IOUT = 100μA
6
8
10
Input Voltage (V)
60
Output Voltage (V)
Ground Pin Current (μA)
60
50
40
30
20
VOUT = 3.0V, IOUT = 100μA
6
8
10
12
14
18
20
16
18
50
40
30
20
10
20
VOUT = 5.0V, IOUT = 100μA
6
8
10
12
14
16
18
Input Voltage (V)
Input Voltage (V)
Output Voltage vs. Output Current
Output Voltage vs. Output Current
3.006
5.004
3.004
5.002
3.002
3.000
2.998
2.996
2.994
16
Ground Pin Current vs. Input Voltage
70
Output Voltage (V)
Ground Pin Current (μA)
Ground Pin Current vs. Input Voltage
4
14
Input Voltage (V)
70
10
12
20
5.000
4.998
4.996
4.994
VOUT = 3.0V
0
100
200
300
Output Current (mA)
SG Micro Corp
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400
500
4.992
VOUT = 5.0V
0
100
200
300
400
500
Output Current (mA)
MARCH 2020
8
20V, 500mA, Low Noise,
Low Dropout Linear Regulator
SGM2211
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
TJ = +25℃, VIN = (VOUT(NOM) + 1V) or 2.7V (whichever is greater), VEN = VIN, IOUT = 10mA, CIN = COUT = 2.2μF, unless otherwise
noted.
Dropout Voltage vs. Output Current
500
500
400
400
Dropout Voltage (mV)
Dropout Voltage (mV)
Dropout Voltage vs. Output Current
300
200
100
0
VOUT = 3.0V
0
100
200
300
400
300
200
100
0
500
VOUT = 5.0V
0
100
200
Output Current (mA)
800
Output Voltage (V)
Ground Pin Current (μA)
800
600
400
200
VOUT = 3.0V
100
200
300
400
600
400
200
0
500
VOUT = 5.0V
0
100
200
300
400
Output Current (mA)
Output Current (mA)
Output Voltage vs. Temperature
Output Voltage vs. Temperature
3.008
5.000
3.006
4.998
3.004
3.002
3.000
2.998
2.996
500
Ground Pin Current vs. Output Current
1000
Output Voltage (V)
Ground Pin Current (μA)
Ground Pin Current vs. Output Current
0
400
Output Current (mA)
1000
0
300
500
4.996
4.994
4.992
4.990
VOUT = 3.0V, IOUT = 10mA
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (℃)
SG Micro Corp
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4.988
VOUT = 5.0V, IOUT = 10mA
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (℃)
MARCH 2020
9
20V, 500mA, Low Noise,
Low Dropout Linear Regulator
SGM2211
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
TJ = +25℃, VIN = (VOUT(NOM) + 1V) or 2.7V (whichever is greater), VEN = VIN, IOUT = 10mA, CIN = COUT = 2.2μF, unless otherwise
noted.
Ground Pin Current vs. Temperature
Ground Pin Current vs. Temperature
980
VOUT = 3.0V
45
40
VOUT = 5.0V
35
30
25
20
Ground Pin Current (μA)
Ground Pin Current (μA)
50
IOUT = 0mA
-40 -25 -10
5
960
940
VOUT = 3.0V
920
900
880
860
20 35 50 65 80 95 110 125
VOUT = 5.0V
IOUT = 500mA
-40 -25 -10
5
Temperature (℃)
Temperature (℃)
Shutdown Current vs. Temperature
1.8
1.6
1.6
VIN = 20V
1.2
VIN = 4.0V
1.0
Shutdown Current (μA)
Shutdown Current (μA)
Shutdown Current vs. Temperature
1.8
1.4
0.8
0.6
1.4
VIN = 20V
1.2
VIN = 6.0V
1.0
0.8
VOUT = 3.0V, IOUT = 0mA
-40 -25 -10
5
0.6
20 35 50 65 80 95 110 125
VOUT = 5.0V, IOUT = 0mA
-40 -25 -10
5
Temperature (℃)
Dropout Voltage vs. Temperature
700
600
600
Dropout Voltage (mV)
Dropout Voltage (mV)
Dropout Voltage vs. Temperature
500
400
300
VOUT = 3.0V, IOUT = 500mA
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (℃)
SG Micro Corp
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20 35 50 65 80 95 110 125
Temperature (℃)
700
200
20 35 50 65 80 95 110 125
500
400
300
200
VOUT = 5.0V, IOUT = 500mA
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (℃)
MARCH 2020
10
20V, 500mA, Low Noise,
Low Dropout Linear Regulator
SGM2211
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
TJ = +25℃, VIN = (VOUT(NOM) + 1V) or 2.7V (whichever is greater), VEN = VIN, IOUT = 10mA, CIN = COUT = 2.2μF, unless otherwise
noted.
Typical Start-Up Behavior
Typical Soft-Start Behavior, Different CSS
2.4
6
2.0
VEN
VOUT = 1.2V
VOUT = 2.8V
VOUT = 5.0V
4
3
Output Voltage (V)
Output Voltage (V)
5
2
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
0.8
0.0
1
2
4
6
8
10
12
14
16
18
Typical Soft-Start Behavior, Different CSS
Typical Soft-Start Behavior, Different CSS
7
2.8
6
VOUT = 2.8V,
TDFN-2×2-6AL
2.4
2.0
1.6
1.2
VEN
CSS = 1nF
CSS = 3.3nF
CSS = 10nF
0.8
0.4
0
0
Time (ms)
3.2
0.0
VEN
CSS = 1nF
CSS = 3.3nF
CSS = 10nF
Time (ms)
Output Voltage (V)
Output Voltage (V)
1.2
0.4
1
0
VOUT = 1.2V,
TDFN-2×2-6AL
1.6
2
4
6
8
10
12
Time (ms)
SG Micro Corp
www.sg-micro.com
14
16
18
VOUT = 5.0V,
TDFN-2×2-6AL
5
4
3
2
VEN
CSS = 1nF
CSS = 3.3nF
CSS = 10nF
1
20
20
0
0
2
4
6
8
10
12
14
16
18
20
Time (ms)
MARCH 2020
11
20V, 500mA, Low Noise,
Low Dropout Linear Regulator
SGM2211
TYPICAL APPLICATION CIRCUITS
VIN = 6V
CIN
2.2μF
VIN
VOUT
COUT
2.2μF
SGM2211-5.0
SENSE/ADJ
ON
EN
OFF
VOUT = 5V
SS
GND
CSS
1nF
Figure 1. SGM2211 with Fixed Output Voltage, 5V (TDFN-2×2-6AL)
VIN = 7V
CIN
2.2μF
VIN
VOUT
SGM2211-5.0
SENSE/ADJ
ON
EN
OFF
VOUT = 6V
R1
2kΩ
COUT
2.2μF
R2
10kΩ
SS
GND
CSS
1nF
Figure 2. SGM2211 with 5V Output Adjusted to 6V (TDFN-2×2-6AL)
VIN = 6V
CIN
2.2μF
VIN
VOUT
SGM2211-5.0
VOUT = 5V
COUT
2.2μF
ON
EN
OFF
NC
GND
Figure 3. SGM2211 with Fixed Output Voltage, 5V (SOT-23-5)
VIN = 7V
CIN
2.2μF
VIN
VOUT
SGM2211
-ADJ
R1
9.6kΩ
COUT
2.2μF
ADJ
ON
OFF
VOUT = 6V
EN
GND
R2
2.4kΩ
Figure 4. SGM2211 with 1.2V Output Adjusted to 6V (SOT-23-5)
SG Micro Corp
www.sg-micro.com
MARCH 2020
12
20V, 500mA, Low Noise,
Low Dropout Linear Regulator
SGM2211
FUNCTIONAL BLOCK DIAGRAM
VIN
SGM2211
VOUT
Sub-Regulator
GND
Short-Circuit &
Thermal Protection
SENSE/ADJ
Voltage
Reference
1.2V
RDIS
R1
R3
C1
R2
R4
EN
C3
C2
Shutdown
Figure 5. Block Diagram (TDFN-2×2-6AL and SOT-23-5 Adjustable Version)
VIN
SGM2211
VOUT
Sub-Regulator
GND
Short-Circuit &
Thermal Protection
Voltage
Reference
1.2V
RDIS
R1
R3
C1
R2
R4
EN
C3
C2
Shutdown
Figure 6. Block Diagram (SOT-23-5 Fixed Version)
SG Micro Corp
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MARCH 2020
13
20V, 500mA, Low Noise,
Low Dropout Linear Regulator
SGM2211
APPLICATION INFORMATION
The SGM2211 is a low noise, fast transient response
high performance LDO, it consumes only 39μA (TYP)
quiescent current and provides 500mA output current.
The SGM2211 provides the protection function for
output overload, output short-circuit condition and
overheating.
Input Capacitor (CIN)
The input decoupling capacitor is necessary to be
connected as close as possible to the VIN pin for
ensuring the device stability. 2.2μF or greater X7R or
X5R ceramic capacitor is selected to get good dynamic
performance.
The EN pin voltage threshold can be programmed by
the user and set above the nominal 1.2V by using two
resistors (REN1, REN2) as shown in Figure 7. The
nominal range of REN2 is 10KΩ to 100kΩ and the
resistance value of REN1 can be determined by the
following equation:
REN1 = REN2 × (VIN - 1.2V) / 1.2V
(1)
where VIN is the required starting voltage.
The coefficient of hysteresis voltage increase can be
calculated through (REN1 + REN2) / REN2. It is calculated
that the EN pin voltage threshold is 3.6V and the
voltage increase is 300mV.
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.
When the device is enabled, the SGM2211 has an
internal soft-start (SS pin open) to limit the inrush
current. When VOUT = 1.2V, the start-up time is 150µs
(TYP).
Output Capacitor (COUT)
Adjustable Regulator
The output decoupling capacitor should be located as
close as possible to the VOUT pin. A 2.2μF or greater
X7R or X5R ceramic capacitor is selected to get good
dynamic performance. The minimum effective capacitance
of COUT that SGM2211 can remain stable is 2.2μF. 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.
Programmable Precision Enable Operation
The SGM2211 uses the EN pin to enable/disable the
device and to deactivate/activate the output automatic
discharge function.
When the EN pin voltage is lower than 1.1V, the device
is in shutdown state, there is no current flowing from VIN
to VOUT pins. In this state, the automatic discharge
transistor is active to discharge the output voltage
through a 100Ω (TYP) resistor.
When the EN pin voltage is higher than 1.2V, the device
is in active state, the input voltage is regulated to the
output voltage and the automatic discharge transistor is
turned off.
SG Micro Corp
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Soft-Start
The output voltage of the SGM2211 can be adjusted
from 1.2V to (VIN - VDROP). The ADJ pin will be connected
with two external resistors as shown in Figure 7, the
output voltage is determined by the following equation:
R
= VADJ × 1+ 1
VOUT
R2
(2)
where:
VOUT is output voltage and VADJ is the internal voltage
reference, VADJ = 1.2V.
The parallel capacitor (CFF) with R1 can be used to
improve the feedback loop stability and PSRR,
increase the transient response and reduce the AC
gain of the error amplifier and output noise.
VIN = 12V
CIN
2.2μF
ON
OFF
REN1
200kΩ
REN2
100kΩ
VIN
VOUT
SGM2211
-ADJ
VOUT = 10V
R1
100kΩ
CFF
1μF
COUT
2.2μF
SENSE/ADJ
EN
GND
R2
100kΩ
Figure 7. Adjustable Output Voltage Application
MARCH 2020
14
SGM2211
20V, 500mA, Low Noise,
Low Dropout Linear Regulator
APPLICATION INFORMATION (continued)
Output Current Limit and Short-Circuit
Protection
When overload events happen, the output current is
internally limited to 0.8A (TYP). When the VOUT pin is
shorted to ground, the short-circuit protection will limit
the output current
VOUT > VIN. When VOUT > VIN, the reverse current
flowing from the VOUT pin to the VIN pin will damage
the SGM2211. If VOUT > (VIN + 0.3V) is expected in the
application, one external Schottky diode will be added
between the VOUT pin and VIN pin to protect the
SGM2211.
Thermal Shutdown
Layout Guidelines
The SGM2211 can detect the temperature of die. When
the die temperature exceeds the threshold value of
thermal shutdown, the SGM2211 will be in shutdown
state and it will remain in this state until the die
temperature decreases to +140℃.
Reverse Current Protection
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
VIN pin and VOUT pin separately. VIN and VOUT had
better use separate ground planes and these ground
planes are single point connected to the GND pin.
The NMOS power transistor has an inherent body
diode, this body diode will be forward biased when
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
MARCH 2020 - REV.A to REV.A.1 ................................................................................................................................................................... Page
Updated Figure 7.....................................................................................................................................................................................................14
Changes from Original (DECEMBER 2019) to REV.A ................................................................................................................................... Page
Changed from product preview to production data .................................................................................................................................................All
SG Micro Corp
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MARCH 2020
15
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
TDFN-2×2-6AL
e
D
L
N6
D1
E1
E
N3
N1
b
BOTTOM VIEW
TOP VIEW
1.60
0.55
1.00
A
2.60
A1
A2
SIDE VIEW
0.30
0.65
RECOMMENDED LAND PATTERN (Unit: mm)
Symbol
Dimensions
In Millimeters
MIN
MAX
A
0.700
A1
0.000
A2
Dimensions
In Inches
MIN
MAX
0.800
0.028
0.050
0.000
0.203 REF
0.031
0.002
0.008 REF
D
1.900
2.100
0.075
0.083
D1
1.500
1.700
0.059
0.067
E
1.900
2.100
0.075
0.083
E1
0.900
1.100
0.035
0.043
b
0.250
0.350
0.010
e
L
SG Micro Corp
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0.650 BSC
0.174
0.014
0.026 BSC
0.326
0.007
0.013
TX00132.000
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
SOT-23-5
1.90
D
e1
E1
2.59
E
0.99
b
e
0.69
0.95
RECOMMENDED LAND PATTERN (Unit: mm)
L
A
A1
θ
A2
Symbol
Dimensions
In Millimeters
MIN
MAX
c
0.2
Dimensions
In Inches
MIN
MAX
A
1.050
1.250
0.041
0.049
A1
0.000
0.100
0.000
0.004
A2
1.050
1.150
0.041
0.045
b
0.300
0.500
0.012
0.020
c
0.100
0.200
0.004
0.008
D
2.820
3.020
0.111
0.119
E
1.500
1.700
0.059
0.067
E1
2.650
2.950
0.104
0.116
e
0.950 BSC
0.037 BSC
e1
1.900 BSC
0.075 BSC
SG Micro Corp
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L
0.300
0.600
0.012
0.024
θ
0°
8°
0°
8°
TX00033.000
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
TDFN-2×2-6AL
7″
9.5
2.30
2.30
1.10
4.0
4.0
2.0
8.0
Q1
SOT-23-5
7″
9.5
3.20
3.20
1.40
4.0
4.0
2.0
8.0
Q3
SG Micro Corp
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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
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DD0002
Reel Type
TX20000.000
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