SGM2209
-24V, -500mA, Low Noise, High PSRR,
Negative Output Linear Regulator
GENERAL DESCRIPTION
FEATURES
The SGM2209 is a low power, low noise, fast transient
● Input Voltage Range: -2.7V to -24V
response and low dropout voltage linear regulator. It
● Output Voltage Accuracy: ±1% at +25℃
provides
● Fixed Outputs of 1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V,
-500mA
output
current
capability.
The
3.3V and 5.0V
operating input voltage range is from -2.7V to -24V. The
adjustable output voltage range is from -1.2V to (-VIN +
● Adjustable Output from -1.2V to (-VIN + VDROP)
VDROP).
● -500mA Output Current
Other features include logic-controlled shutdown mode,
short-circuit
current
limit
and
thermal
shutdown
protection. The SGM2209 has automatic discharge
function to quickly discharge VOUT in the disabled status.
The SGM2209 is available in Green TDFN-2×2-6AL,
● Low Quiescent Current:
IGND = -1.2mA (TYP) with -500mA Load
● Low Dropout Voltage:
-345mV (TYP) at -500mA, at VOUT = -3.0V
● Low Noise:
10.5μVRMS (TYP) at VOUT = -1.2V
TDFN-3×3-8L and SOT-23-5 packages. It operates over
12μVRMS (TYP) at VOUT = -2.5V
an operating temperature range of -40℃ to +125℃.
16μVRMS (TYP) at VOUT = -5.0V
● PSRR: -60dB at 10kHz at VOUT = -2.5V
● Positive or Negative Enable Logic
APPLICATIONS
● Stable with Small 2.2μF Ceramic Output Capacitor
Industrial and Medical Equipment
● Low Shutdown Current: -1.1μA (TYP)
Communications and Infrastructure
● Current Limiting and Thermal Protection
Precision Amplifiers
● -40℃ to +125℃ Operating Temperature Range
ADC and DAC Circuits
● Available in Green TDFN-2×2-6AL, TDFN-3×3-8L
and SOT-23-5 Packages
TYPICAL APPLICATION
VIN = -8V
VOUT = -5V VIN = -8V
VOUT
VIN
SGM2209
CIN
2.2μF
ON
OFF
-2V
2V
0V
EN
ON
SGM2209-ADJ
CIN
COUT
2.2μF 2.2μF
ON
OFF
-2V
GND
Fixed Output Voltage Version, VOUT = -5.0V
2V
0V
ON
VOUT = -5V
VOUT
VIN
EN
41.2kΩ
ADJ
GND
COUT
2.2μF
13kΩ
Adjustable Output Voltage Version, VOUT = -5.0V
Figure 1. Typical Application Circuits
SG Micro Corp
www.sg-micro.com
JANUARY 2020 – REV.A
-24V, -500mA, Low Noise, High PSRR,
Negative Output Linear Regulator
SGM2209
PACKAGE/ORDERING INFORMATION
MODEL
PACKAGE
DESCRIPTION
SPECIFIED
TEMPERATURE
RANGE
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
SGM2209-1.2
TDFN-2×2-6AL
-40℃ to +125℃
SGM2209-1.2XTDI6G/TR
MY2
XXXX
Tape and Reel, 3000
SGM2209-1.5
TDFN-2×2-6AL
-40℃ to +125℃
SGM2209-1.5XTDI6G/TR
MY3
XXXX
Tape and Reel, 3000
SGM2209-1.8
TDFN-2×2-6AL
-40℃ to +125℃
SGM2209-1.8XTDI6G/TR
CA3
XXXX
Tape and Reel, 3000
SGM2209-2.5
TDFN-2×2-6AL
-40℃ to +125℃
SGM2209-2.5XTDI6G/TR
MY4
XXXX
Tape and Reel, 3000
SGM2209-2.8
TDFN-2×2-6AL
-40℃ to +125℃
SGM2209-2.8XTDI6G/TR
CA4
XXXX
Tape and Reel, 3000
SGM2209-3.0
TDFN-2×2-6AL
-40℃ to +125℃
SGM2209-3.0XTDI6G/TR
CA5
XXXX
Tape and Reel, 3000
SGM2209-3.3
TDFN-2×2-6AL
-40℃ to +125℃
SGM2209-3.3XTDI6G/TR
CA6
XXXX
Tape and Reel, 3000
SGM2209-5.0
TDFN-2×2-6AL
-40℃ to +125℃
SGM2209-5.0XTDI6G/TR
MY5
XXXX
Tape and Reel, 3000
SGM2209-ADJ
TDFN-2×2-6AL
-40℃ to +125℃
SGM2209-ADJXTDI6G/TR
MY6
XXXX
Tape and Reel, 3000
SGM2209-1.2
TDFN-3×3-8L
-40℃ to +125℃
SGM2209-1.2XTDB8G/TR
SGM2209-1.5
TDFN-3×3-8L
-40℃ to +125℃
SGM2209-1.5XTDB8G/TR
SGM2209-1.8
TDFN-3×3-8L
-40℃ to +125℃
SGM2209-1.8XTDB8G/TR
SGM2209-2.5
TDFN-3×3-8L
-40℃ to +125℃
SGM2209-2.5XTDB8G/TR
SGM2209-2.8
TDFN-3×3-8L
-40℃ to +125℃
SGM2209-2.8XTDB8G/TR
SGM2209-3.0
TDFN-3×3-8L
-40℃ to +125℃
SGM2209-3.0XTDB8G/TR
SGM2209-3.3
TDFN-3×3-8L
-40℃ to +125℃
SGM2209-3.3XTDB8G/TR
SGM2209-5.0
TDFN-3×3-8L
-40℃ to +125℃
SGM2209-5.0XTDB8G/TR
SGM2209-ADJ
TDFN-3×3-8L
-40℃ to +125℃
SGM2209-ADJXTDB8G/TR
SG Micro Corp
www.sg-micro.com
SGM
C9CDB
XXXXX
SGM
C9DDB
XXXXX
SGM
C9EDB
XXXXX
SGM
C9FDB
XXXXX
SGM
CA0DB
XXXXX
SGM
CA1DB
XXXXX
SGM
CA2DB
XXXXX
SGM
MY0DB
XXXXX
SGM
MY1DB
XXXXX
Tape and Reel, 4000
Tape and Reel, 4000
Tape and Reel, 4000
Tape and Reel, 4000
Tape and Reel, 4000
Tape and Reel, 4000
Tape and Reel, 4000
Tape and Reel, 4000
Tape and Reel, 4000
JANUARY 2020
2
-24V, -500mA, Low Noise, High PSRR,
Negative Output Linear Regulator
SGM2209
PACKAGE/ORDERING INFORMATION (continued)
MODEL
PACKAGE
DESCRIPTION
SPECIFIED
TEMPERATURE
RANGE
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
SGM2209-1.2
SOT-23-5
-40℃ to +125℃
SGM2209-1.2XN5G/TR
C9AXX
Tape and Reel, 3000
SGM2209-1.5
SOT-23-5
-40℃ to +125℃
SGM2209-1.5XN5G/TR
C9BXX
Tape and Reel, 3000
SGM2209-1.8
SOT-23-5
-40℃ to +125℃
SGM2209-1.8XN5G/TR
MX9XX
Tape and Reel, 3000
SGM2209-2.5
SOT-23-5
-40℃ to +125℃
SGM2209-2.5XN5G/TR
MXAXX
Tape and Reel, 3000
SGM2209-2.8
SOT-23-5
-40℃ to +125℃
SGM2209-2.8XN5G/TR
MXBXX
Tape and Reel, 3000
SGM2209-3.0
SOT-23-5
-40℃ to +125℃
SGM2209-3.0XN5G/TR
MXCXX
Tape and Reel, 3000
SGM2209-3.3
SOT-23-5
-40℃ to +125℃
SGM2209-3.3XN5G/TR
MXDXX
Tape and Reel, 3000
SGM2209-5.0
SOT-23-5
-40℃ to +125℃
SGM2209-5.0XN5G/TR
MXEXX
Tape and Reel, 3000
SGM2209-ADJ
SOT-23-5
-40℃ to +125℃
SGM2209-ADJXN5G/TR
MXFXX
Tape and Reel, 3000
MARKING INFORMATION
NOTE: X = Date Code. XX = Date Code. XXXXX = Date Code, Trace Code and Vendor Code.
TDFN-2×2-6AL
YYY
X XXX
TDFN-3×3-8L
Serial Number
Trace Code
Date Code - Year
XXXXX
Vendor Code
Trace Code
Date Code - Year
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
JANUARY 2020
3
-24V, -500mA, Low Noise, High PSRR,
Negative Output Linear Regulator
SGM2209
ABSOLUTE MAXIMUM RATINGS
VIN to GND ...................................................... +0.3V to -25V
VOUT to GND ...........................................+0.3V to VIN - 0.3V
EN to GND ...................................................+5V to VIN - 0.3V
EN to VIN ......................................................... +25V to -0.3V
ADJ to GND ..................................................... +0.3V to VOUT
Package Thermal Resistance
TDFN-2×2-6AL, θJA.................................................. 101℃/W
TDFN-2×2-6AL, θJB.................................................... 39℃/W
TDFN-2×2-6AL, θJC ................................................... 83℃/W
TDFN-3×3-8L, θJA ...................................................... 70℃/W
TDFN-3×3-8L, θJB ...................................................... 25℃/W
TDFN-3×3-8L, θJC ...................................................... 47℃/W
SOT-23-5, θJA .......................................................... 186℃/W
SOT-23-5, θJB ............................................................ 45℃/W
SOT-23-5, θJC ............................................................ 74℃/W
Junction Temperature .................................................+150℃
Storage Temperature Range ....................... -65℃ to +150℃
Lead Temperature (Soldering, 10s) ............................+260℃
ESD Susceptibility
HBM ............................................................................. 8000V
CDM ............................................................................ 1000V
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.
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range ......................................... -2.7V to -24V
Operating Junction Temperature Range ...... -40℃ to +125℃
Input Capacitance, CIN ........................................ 1.5μF (MIN)
Output Capacitance, COUT ............................... 1.5μF to 10μF
PIN CONFIGURATIONS
SGM2209-Fixed Output
(TOP VIEW)
VOUT 1
6 VIN
VIN
NC 2
EN 3
5 GND
4 NC
TDFN-2×2-6AL
SG Micro Corp
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SGM2209-ADJ
(TOP VIEW)
VOUT 1
ADJ 2
VIN
EN 3
6
VIN
5
GND
4
NC
TDFN-2×2-6AL
JANUARY 2020
4
-24V, -500mA, Low Noise, High PSRR,
Negative Output Linear Regulator
SGM2209
PIN CONFIGURATIONS (continued)
SGM2209-Fixed Output
(TOP VIEW)
VOUT
1
VOUT
2
NC
3
EN
4
VIN
SGM2209-ADJ
(TOP VIEW)
8
VIN
VOUT
1
7
VIN
VOUT
2
6
GND
ADJ
3
5
NC
EN
4
VIN
TDFN-3×3-8L
TDFN-3×3-8L
SGM2209-Fixed Output
(TOP VIEW)
SGM2209-ADJ
(TOP VIEW)
GND
1
VIN
2
EN
3
5
4
VOUT
NC
GND
1
VIN
2
EN
3
SOT-23-5
8
VIN
7
VIN
6
GND
5
NC
5
VOUT
4
ADJ
SOT-23-5
PIN DESCRIPTION
PIN
TDFN2×2-6AL
TDFN3×3-8L
SOT-23-5
1
1, 2
5
NAME
FUNCTION
VOUT
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.
NC
2
3
4
3
4
3
EN
4
5
‒
NC
5
6
1
GND
6
7, 8
2
VIN
Exposed
Pad
Exposed
Pad
‒
VIN
SG Micro Corp
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ADJ
Not Connected (fixed voltage version).
Adjustable Input (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.
Enable Pin. Drive EN 2.0V above or below ground to turn on the regulator.
Drive EN to ground to turn off the regulator. Connect the EN pin to the VIN
pin when using automatic startup.
Not Connected.
Ground.
Input Voltage Supply Pin. It is recommended to use a 2.2μF or larger ceramic
capacitor from VIN pin to ground. This ceramic capacitor should be placed as
close as possible to VIN pin.
Exposed Pad. Connect the exposed pad at the bottom of the package to the
internal VIN for maximum thermal performance. In normal use, connect the
exposed pad to the VIN on the board, which is the most negative potential in
the negative voltage regulating circuit.
JANUARY 2020
5
-24V, -500mA, Low Noise, High PSRR,
Negative Output Linear Regulator
SGM2209
ELECTRICAL CHARACTERISTICS
(VIN = (VOUT(NOM) - 0.5V) or -2.7V (whichever is greater), VEN = VIN, IOUT = -10mA, CIN = COUT = 2.2μF, TJ = -40℃ to +125℃,
typical values are at TJ = +25℃, unless otherwise noted.)
PARAMETER
Input Voltage Range
Under-Voltage Lockout
Thresholds
SYMBOL
VIN
VUVLO
Operating Supply Current
IGND
Shutdown Current
ISHDN
ADJ Pin Input Bias Current
IADJ
Output Voltage Accuracy
VOUT
Feedback Voltage
VADJ
Line Regulation
∆VOUT
∆VIN × VOUT
Load Regulation
∆VOUT
VOUT
CONDITIONS
TEMP
MIN
IOUT = -250mA
+25℃
IOUT = -350mA
IOUT = -500mA
Dropout Voltage
VDROP
Short-Circuit Current
ILIM
ISHORT
SG Micro Corp
www.sg-micro.com
en
-2.7
-24
V
+25℃
-3.0
-24
V
+25℃
-3.3
-24
V
-2.50
V
VIN rising
-40℃ to +125℃
IOUT = 0µA
-40℃ to +125℃
-42
-83
µA
IOUT = -500mA
-40℃ to +125℃
-1.2
-2.1
mA
-2.42
-2.24
-2.33
V
VEN = GND
-40℃ to +125℃
-1.1
-3.0
VEN = GND, VIN = -24V
-40℃ to +125℃
-1.2
-10
VADJ = -1.3V, VIN = -2.7V to -24V
-40℃ to +125℃
-3.5
3.5
nA
+25℃
-1
1
%
-40℃ to +125℃
-1.5
1.5
%
+25℃
-1.188
-1.212
V
VIN = (VOUT(NOM) - 0.5V) to -24V,
IOUT = -1mA to -500mA
-40℃ to +125℃
-1.182
-1.218
V
VIN = (VOUT(NOM) - 0.5V) to -24V
-40℃ to +125℃
0.001
0.03
%/V
IOUT = -1mA to -500mA
-40℃ to +125℃
0.03
0.8
%
VOUT(NOM) = -2.5V
-40℃ to +125℃
-230
-350
VOUT(NOM) = -3.0V
-40℃ to +125℃
-160
-260
VOUT(NOM) = -5.0V
-40℃ to +125℃
-125
-220
VOUT(NOM) = -3.0V
-40℃ to +125℃
-230
-370
VOUT(NOM) = -5.0V
-40℃ to +125℃
-180
-300
VOUT(NOM) = -3.0V
-40℃ to +125℃
-345
-550
VOUT(NOM) = -5.0V
-40℃ to +125℃
-260
-420
IOUT = -10mA
VIN = (VOUT(NOM) - 0.5V) to -24V,
IOUT = -1mA to -500mA
IOUT = -10mA
IOUT = -350mA
VIN = MIN(VOUT(NOM) - 1V, -4V)
+25℃
VOUT = 0V, VIN = MIN(VOUT(NOM) - 1V, -4V)
10Hz to 100kHz
Output Voltage Noise
UNITS
-40℃ to +125℃
IOUT = -500mA
Output Current Limit (2)
MAX
VIN falling
IOUT = -250mA
(1)
TYP
-0.68
-1.2
mV
-1.05
A
+25℃
-360
mA
VOUT(NOM) = -1.2V
+25℃
10.5
VOUT(NOM) = -2.5V
+25℃
12
VOUT(NOM) = -5.0V
+25℃
16
+25℃
130
+25℃
31
10Hz to 100kHz, VOUT(NOM) = -15V,
adjustable mode, CNR = open,
RNR = open, RFB1 = 150kΩ, RFB2 = 13kΩ
10Hz to 100kHz, VOUT(NOM) = -15V,
adjustable mode, CNR = 100nF,
RNR = 13kΩ, RFB1 = 150kΩ, RFB2 = 13kΩ
µA
µVRMS
JANUARY 2020
6
-24V, -500mA, Low Noise, High PSRR,
Negative Output Linear Regulator
SGM2209
ELECTRICAL CHARACTERISTICS (continued)
(VIN = (VOUT(NOM) - 0.5V) or -2.7V, whichever is greater, VEN = VIN, IOUT = -10mA, CIN = COUT = 2.2μF, TJ = -40℃ to +125℃,
typical values are at TJ = +25℃, unless otherwise noted.)
PARAMETER
Power Supply Rejection Ratio
Start-Up Time (3)
Positive Enable High-Level
Voltage
Positive Enable Low-Level
Voltage
Negative Enable High-Level
Voltage
Negative Enable Low-Level
Voltage
SYMBOL
PSRR
tSTR
CONDITIONS
TEMP
f = 1kHz
VIN = VOUT(NOM) - 1V,
f = 10kHz
ΔVRIPPLE = 0.2VP-P,
all fixed output voltage options
f = 100kHz
+25℃
-75
+25℃
-60
+25℃
-42
f = 1kHz
+25℃
-71
f = 10kHz
+25℃
-60
f = 100kHz
+25℃
-44
VOUT(NOM) = -1.2V
+25℃
210
VOUT(NOM) = -5.0V
+25℃
540
VIN = -16V, VOUT(NOM) = -15V,
ΔVRIPPLE = 0.2VP-P,
adjustable mode,
CNR = 100nF, RNR = 13kΩ,
RFB1 = 150kΩ, RFB2 = 13kΩ
MIN
TYP
MAX
UNITS
dB
dB
µs
VEN(+HI)
-40℃ to +125℃
1.22
VEN(+LO)
-40℃ to +125℃
0.3
VEN(-HI)
-40℃ to +125℃
-2.0
VEN(-LO)
-40℃ to +125℃
-0.55
V
V
EN Positive Input Current
IEN_P
VEN = 5V, VIN = -19V
-40℃ to +125℃
0.9
3
µA
EN Negative Input Current
IEN_N
VEN = -24V, VIN = -24V
-40℃ to +125℃
-0.1
-1
µA
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
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. Output current limit has the function of current foldback protection and refers to the current at which VOUT falls to 90% ×
VOUT(NOM).
3. The start-up time is defined as the time between the EN rising edge to VOUT reaching 90% × VOUT(NOM).
SG Micro Corp
www.sg-micro.com
JANUARY 2020
7
-24V, -500mA, Low Noise, High PSRR,
Negative Output Linear Regulator
SGM2209
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = (VOUT(NOM) - 0.5V) or -2.7V, whichever is greater, VEN = VIN, IOUT = -10mA, CIN = COUT = 2.2μF, TJ = +25℃, unless otherwise
noted.
Turn-On with EN Pin
Turn-On with EN Pin
2V/div
2V/div
VEN
VEN
VOUT
VOUT
2V/div
500mV/div
VOUT = -1.2V
VOUT = -5.0V
Time (100μs/div)
Time (100μs/div)
Line Transient Response
Line Transient Response
VOUT
20mV/div
VOUT
VOUT = -1.2V, VIN = -2.7V to -3.7V
20mV/div
1V/div
VIN
1V/div
VIN
VOUT = -5.0V, VIN = -5.5V to -6.5V
Time (100μs/div)
Time (100μs/div)
Load Transient Response
Load Transient Response
VOUT
50mV/div
VOUT
VOUT = -1.2V, VIN = -2.7V, IOUT = -2mA to -200mA
Time (50μs/div)
SG Micro Corp
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50mV/div
100mA/div
IOUT
100mA/div
IOUT
VOUT = -5.0V, VIN = -6.0V, IOUT = -2mA to -200mA
Time (50μs/div)
JANUARY 2020
8
-24V, -500mA, Low Noise, High PSRR,
Negative Output Linear Regulator
SGM2209
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = (VOUT(NOM) - 0.5V) or -2.7V, whichever is greater, VEN = VIN, IOUT = -10mA, CIN = COUT = 2.2μF, TJ = +25℃, unless otherwise
noted.
Load Transient Response
Load Transient Response
VOUT
IOUT
VOUT
VOUT = -5.0V, VIN = -6.0V, IOUT = -2mA to -500mA
VOUT = -1.2V, VIN = -3.3V, IOUT = -2mA to -500mA
Time (50μs/div)
Time (50μs/div)
Power Supply Rejection Ratio vs. Frequency
0
VOUT = -1.2V
Power Supply Rejection Ratio (dB)
Power Supply Rejection Ratio (dB)
0
-20
-40
VIN = -4.2V
VIN = -3.2V
VIN = -2.7V
-60
-80
-100
0.01
0.1
1
10
100
Power Supply Rejection Ratio vs. Frequency
VOUT = -2.5V
-20
-40
VIN = -6.5V
VIN = -4.5V
VIN = -3.5V
-60
-80
-100
0.01
0.1
Frequency (kHz)
Power Supply Rejection Ratio vs. Frequency
0
VOUT = -5.0V
-20
-40
VIN = -9.0V
VIN = -7.0V
VIN = -6.0V
-60
-80
-100
0.01
0.1
1
Frequency (kHz)
SG Micro Corp
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1
10
100
Frequency (kHz)
Power Supply Rejection Ratio (dB)
Power Supply Rejection Ratio (dB)
0
200mA/div 100mV/div
200mA/div 100mV/div
IOUT
10
100
Power Supply Rejection Ratio vs. Frequency
VOUT = -15V with Noise Reduction Network
-20
-40
VIN = -19V
VIN = -17V
VIN = -16V
-60
-80
-100
0.01
0.1
1
10
100
Frequency (kHz)
JANUARY 2020
9
-24V, -500mA, Low Noise, High PSRR,
Negative Output Linear Regulator
SGM2209
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = (VOUT(NOM) - 0.5V) or -2.7V, whichever is greater, VEN = VIN, IOUT = -10mA, CIN = COUT = 2.2μF, TJ = +25℃, unless otherwise
noted.
Output Noise Density vs. Frequency
VOUT = -1.2V
1000
100
10
1
0.01
0.1
1
10
Output Noise Density vs. Frequency
10000
Output Noise Density (nV/√Hz)
Output Noise Density (nV/√Hz)
10000
VOUT = -5.0V
1000
100
10
1
0.01
100
0.1
Frequency (kHz)
Dropout Voltage vs. Output Current
-700
Dropout Voltage (mV)
Dropout Voltage (mV)
-400
-300
-200
-100
-250
-200
-150
-100
-50
0
-100
-200
-300
-400
0
-500
0
-100
Output Current (mA)
Output Voltage (V)
Output Voltage (V)
-2.500
-2.499
-2.498
-100
-200
-300
Output Current (mA)
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-300
-400
-500
-400
Output Voltage vs. Output Current
-5.000
VOUT = -2.5V, VIN = -3.3V
0
-200
Output Current (mA)
Output Voltage vs. Output Current
-2.501
-2.497
100
VOUT = -5.0V
-300
-500
0
10
Dropout Voltage vs. Output Current
-350
VOUT = -2.5V
-600
1
Frequency (kHz)
-500
VOUT = -5.0V, VIN = -5.5V
-4.999
-4.998
-4.997
-4.996
0
-100
-200
-300
-400
-500
Output Current (mA)
JANUARY 2020
10
-24V, -500mA, Low Noise, High PSRR,
Negative Output Linear Regulator
SGM2209
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = (VOUT(NOM) - 0.5V) or -2.7V, whichever is greater, VEN = VIN, IOUT = -10mA, CIN = COUT = 2.2μF, TJ = +25℃, unless otherwise
noted.
-1.2010
Output Voltage vs. Temperature
-5.000
VOUT = -1.2V
-1.2005
VOUT = -5.0V
Output Voltage (V)
Output Voltage (V)
-4.998
-1.2000
-1.1995
-1.1990
-1.1985
-1.1980
Output Voltage vs. Temperature
-4.996
-4.994
-4.992
-4.990
-40 -25 -10
5
-4.988
20 35 50 65 80 95 110 125
-40 -25 -10
5
Temperature (℃)
-900
Dropout Voltage vs. Temperature
VOUT = -2.5V
-350
-700
-600
-500
-400
-300
-200
IOUT = -250mA
IOUT = -350mA
IOUT = -500mA
-100
0
-400
Dropout Voltage (mV)
Dropout Voltage (mV)
-800
-40 -25 -10
5
Dropout Voltage vs. Temperature
VOUT = -5.0V
-300
-250
-200
-150
-100
IOUT = -250mA
IOUT = -350mA
IOUT = -500mA
-50
0
20 35 50 65 80 95 110 125
-40 -25 -10
5
Temperature (℃)
-1.4
Shutdown Current vs. Temperature
-70
VOUT = -5.0V, IOUT = 0mA
Ground Pin Current (μA)
Shutdown Current (μA)
-60
-1.0
-0.8
-0.6
-0.4
-0.2
20 35 50 65 80 95 110 125
Temperature (℃)
-1.2
0.0
20 35 50 65 80 95 110 125
Temperature (℃)
Ground Pin Current vs. Temperature
VOUT = -5.0V, IOUT = 0mA
-50
-40
-30
-20
-10
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (℃)
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0
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (℃)
JANUARY 2020
11
-24V, -500mA, Low Noise, High PSRR,
Negative Output Linear Regulator
SGM2209
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = (VOUT(NOM) - 0.5V) or -2.7V, whichever is greater, VEN = VIN, IOUT = -10mA, CIN = COUT = 2.2μF, TJ = +25℃, unless otherwise
noted.
EN Negative Input Current vs. EN Voltage
VIN = -24V
-0.16
-0.14
-0.12
-0.10
-0.08
-0.06
-0.04
-0.02
0.00
0
-4
-8
-12
-16
-20
EN Positive Input Current vs. EN Voltage
0.9
EN Positive Input Current (μA)
EN Negative Input Current (μA)
-0.18
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
-24
VIN = -19V
0.8
0
1
Shutdown Current vs. Input Voltage
-1.20
Ground Pin Current (μA)
Shutdown Current (μA)
-1.05
-1.00
-0.95
-0.90
-0.85
5
6
-45.5
-45.0
-44.5
-44.0
-43.5
-43.0
-3
-6
-9
-12
-15
-18
-21
-42.5
-24
0
-4
-600
Dropout Voltage vs. Output Voltage
IOUT = -250mA
IOUT = -350mA
IOUT = -500mA
-16
-20
-24
VOUT = -5.0V
-1200
-500
-400
-300
-200
-100
0
-2.5
-12
Ground Pin Current vs. Output Current
-1400
Ground Pin Current (μA)
-700
-8
Input Voltaget (V)
Input Voltage (V)
Dropout Voltage (mV)
4
VOUT = -5.0V, IOUT = 0mA
-46.0
-1.10
-0.80
3
Ground Pin Current vs. Input Voltage
-46.5
VOUT = -1.2V, IOUT = 0mA
-1.15
2
EN Voltaget (V)
EN Voltaget (V)
-1000
-800
-600
-400
-200
-3
-3.5
-4
Output Voltage (V)
SG Micro Corp
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-4.5
-5
0
0
-100
-200
-300
-400
-500
Output Current (mA)
JANUARY 2020
12
-24V, -500mA, Low Noise, High PSRR,
Negative Output Linear Regulator
SGM2209
FUNCTIONAL BLOCK DIAGRAMS
SGM2209-Fixed Output
VIN
VOUT
+
Shutdown and
Logic Control
EN
-
Reference
Voltage
Short-Circuit
&
Thermal Protection
GND
Figure 2. Fixed Output Voltage Internal Block Diagram
SGM2209-ADJ
VIN
VOUT
+
EN
Shutdown and
Logic Control
Short-Circuit
&
Thermal Protection
ADJ
-1.2V
Reference
Voltage
GND
Figure 3. Adjustable Output Voltage Internal Block Diagram
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JANUARY 2020
13
SGM2209
-24V, -500mA, Low Noise, High PSRR,
Negative Output Linear Regulator
APPLICATION INFORMATION
The SGM2209 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 -1.1μA (TYP).
Input Capacitor Selection (CIN)
The input decoupling capacitor is necessary to be
connected as close as possible to the VIN pin for
ensuring the device stability. A 2.2μF 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.
Output Capacitor Selection (COUT)
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 SGM2209 can remain stable is
1.5μF. 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.
Enable Pin Operation
The EN pin is used to enable and disable the VOUT pin
under normal operating conditions. Connect the EN pin
to the VIN pin when using automatic startup.
When EN is at ±2.0V with respect to GND, the device is
in active state. When EN is at 0V, the device is in
shutdown state. In this state, a discharge resistor
SG Micro Corp
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around 200kΩ connects to the VOUT pin and pulls the
VOUT pin up to GND.
The EN pin of the SGM2209 is bipolar, even though the
enable voltage can be positive or negative.
The typical hysteresis of the EN pin is shown in Figure
4. This feature is used to prevent on/off oscillations due
to noise on the EN pin when it passes the threshold
point.
0.5
0.0
-0.5
VOUT (V)
The SGM2209 is a low quiescent current, 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 SGM2209 useful in a variety
of applications. The SGM2209 provides the protection
function for output overload, output short-circuit
condition and overheating.
-1.0
-1.5
-2.0
VOUT with rising VEN
VOUT with falling VEN
-2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0
Enable Voltage (V)
1.5
2.0
Figure 4. Typical EN Pin Operation
Adjustable Regulator
For the SGM2209-ADJ, set the output voltage by using
a resistor divider as shown in Figure 5. Choose RFB2
less than 120kΩ to maintain a 10μA minimum load.
Calculate the value for the output voltage using the
following equation:
VOUT = -1.2V × (1 + RFB1/RFB2)
VIN = -3V
SGM2209-ADJ
CIN
2.2μF
ON
OFF
-2V
ON
2V
0V
EN
VOUT = -2.4V
VOUT
VIN
GND
RFB1
120kΩ
ADJ
COUT
2.2μF
RFB2
120kΩ
Figure 5. Adjustable Output Voltage Application
Soft-Start
When the device is enabled, the SGM2209 uses an
internal soft-start to limit the inrush current. The start-up
time for the -5.0V option is 540μs (TYP) from the time
the EN active threshold is crossed to when VOUT
reaches 90% × VOUT(NOM).
JANUARY 2020
14
-24V, -500mA, Low Noise, High PSRR,
Negative Output Linear Regulator
SGM2209
APPLICATION INFORMATION (continued)
Noise Reduction of the Adjustable SGM2209
One parallel capacitor (CNR) and resistor (RNR) with
RFB1 can be used to improve the feedback loop stability
and PSRR, increase the transient response and reduce
the output noise. Use RFB2 = 13kΩ to maintain a
minimum load.
VIN = -16V
CIN
2.2μF
ON
OFF
-2V
2V
0V
EN
VOUT = -15V
VOUT
VIN
SGM2209-ADJ
RFB1
CNR
150kΩ 100nF
ADJ
GND
ON
RFB2
13kΩ
RNR
13kΩ
COUT
2.2μF
Figure 6. Noise Reduction Modification to Adjustable LDO
Output Current Limit and Short-Circuit
Protection
When overload events happen, the output current is
internally limited to -1.05A (TYP). When the VOUT pin
is shorted to ground, the short-circuit protection will limit
the output current to -360mA (TYP).
Thermal Shutdown
The SGM2209 can detect the temperature of die. When
the die temperature exceeds the threshold value of
thermal shutdown, the SGM2209 will be in shutdown
state and it will remain in this state until the die
temperature decreases to +140℃.
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
VIN pin and VOUT pin separately.
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Original (JANUARY 2020) to REV.A ...................................................................................................................................Page
Changed from product preview to production data ............................................................................................................................................. All
SG Micro Corp
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JANUARY 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
TDFN-3×3-8L
D
e
N8
D1
k
E
E1
L
N4
N1
b
BOTTOM VIEW
TOP VIEW
2.3
1.5 2.725
A
A1
A2
0.675
SIDE VIEW
0.24
0.65
RECOMMENDED LAND PATTERN (Unit: mm)
Symbol
Dimensions
In Millimeters
MIN
MAX
Dimensions
In Inches
MIN
MAX
A
0.700
0.800
0.028
0.031
A1
0.000
0.050
0.000
0.002
A2
0.203 REF
0.008 REF
D
2.900
3.100
0.114
0.122
D1
2.200
2.400
0.087
0.094
E
2.900
3.100
0.114
0.122
E1
1.400
1.600
0.055
k
b
0.200 MIN
0.180
e
L
SG Micro Corp
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0.300
0.007
0.575
0.015
0.650 TYP
0.375
0.063
0.008 MIN
0.012
0.026 TYP
0.023
TX00058.000
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
TDFN-3×3-8L
13″
12.4
3.35
3.35
1.13
4.0
8.0
2.0
12.0
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
13″
386
280
370
5
SG Micro Corp
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DD0002
Reel Type
TX20000.000
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