SGM2045 [SGMICRO]
300mA, Low VIN, Ultra-Low Noise and High PSRR Linear Regulator;
| 型号： | SGM2045 |
| 厂家： | 
Shengbang Microelectronics Co, Ltd |
| 描述： | 300mA, Low VIN, Ultra-Low Noise and High PSRR Linear Regulator |
| 文件： | 总19页 (文件大小：1231K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SGM2045
300mA, Low VIN, Ultra-Low Noise
and High PSRR Linear Regulator
GENERAL DESCRIPTION
FEATURES
The SGM2045 is an ultra-low noise, low VIN, high
PSRR and low dropout voltage linear regulator. It is
capable of supplying 300mA output current with typical
dropout voltage of only 80mV. The operating input
voltage range is from 1.1V to 5.5V and output voltage
range is from 0.6V to 4.2V.
● Operating Input Voltage Range: 1.1V to 5.5V
● Fixed Outputs of 0.6V, 0.75V, 0.8V, 0.85V, 1.0V,
1.05V, 1.1V, 1.2V, 1.5V, 1.75V, 1.8V, 1.825V, 2.2V,
2.5V, 2.8V, 2.9V, 3.0V, 3.3V and 4.2V
● 300mA Output Current
● Output Voltage Accuracy: ±1% at +25℃
● Low Quiescent Current: 15μA (TYP)
● Low Dropout Voltage:
Other features include logic-controlled shutdown mode,
short-circuit current limit and thermal shutdown
protection. The SGM2045 has automatic discharge
function to quickly discharge VOUT in the disabled status.
100mV (TYP) at 300mA when VOUT = 1.8V
(XTDFN-1×1-4L)
80mV (TYP) at 300mA when VOUT = 1.8V
(WLCSP-0.64×0.64-4B-A)
The SGM2045 is suitable for applications which need
low noise and fast transient response power supply,
such as power supply of camera module in smart
phone, etc.
● Ultra-Low Noise: 9.5μVRMS (TYP)
● High PSRR: 92dB (TYP) at 1kHz
● Current Limiting and Thermal Protection
● Excellent Load and Line Transient Responses
● With Output Automatic Discharge
● Stable with Small Case Size Ceramic Capacitors
● Shutdown Supply Current: 0.03μA (TYP)
● -40℃ to +125℃ Operating Temperature Range
● Available in Green XTDFN-1×1-4L and
WLCSP-0.64×0.64-4B-A Packages
The SGM2045 is available in Green XTDFN-1×1-4L
and WLCSP-0.64×0.64-4B-A packages. It operates over
an operating temperature range of -40℃ to +125℃.
APPLICATIONS
Portable Electronic Devices
Smoke Detectors
IP Cameras
Wireless LAN Devices
Battery-Powered Equipment
Smartphones and Tablets
Digital Cameras and Audio Devices
TYPICAL APPLICATION
VOUT
VIN
OUT
IN
SGM2045
ON
CIN
COUT
EN
1μF
1μF
GND
OFF
Figure 1. Typical Application Circuit
SG Micro Corp
OCTOBER 2022 – REV. B. 1
www.sg-micro.com
300mA, Low VIN, Ultra-Low Noise
and High PSRR Linear Regulator
SGM2045
PACKAGE/ORDERING INFORMATION
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
MODEL
DESCRIPTION
XTDFN-1×1-4L
XTDFN-1×1-4L
XTDFN-1×1-4L
XTDFN-1×1-4L
XTDFN-1×1-4L
XTDFN-1×1-4L
XTDFN-1×1-4L
XTDFN-1×1-4L
XTDFN-1×1-4L
XTDFN-1×1-4L
XTDFN-1×1-4L
XTDFN-1×1-4L
XTDFN-1×1-4L
XTDFN-1×1-4L
XTDFN-1×1-4L
XTDFN-1×1-4L
XTDFN-1×1-4L
XTDFN-1×1-4L
Tape and Reel,
10000
Tape and Reel,
10000
Tape and Reel,
10000
Tape and Reel,
10000
Tape and Reel,
10000
Tape and Reel,
10000
Tape and Reel,
10000
Tape and Reel,
10000
Tape and Reel,
10000
Tape and Reel,
10000
Tape and Reel,
10000
Tape and Reel,
10000
Tape and Reel,
10000
Tape and Reel,
10000
Tape and Reel,
10000
Tape and Reel,
10000
Tape and Reel,
10000
Tape and Reel,
10000
Tape and Reel,
5000
Tape and Reel,
5000
Tape and Reel,
5000
Tape and Reel,
5000
Tape and Reel,
5000
Tape and Reel,
5000
Tape and Reel,
5000
Tape and Reel,
5000
Tape and Reel,
5000
Tape and Reel,
5000
SGM2045-0.60
SGM2045-0.75
SGM2045-0.80
SGM2045-0.85
SGM2045-1.00
SGM2045-1.05
SGM2045-1.10
SGM2045-1.20
SGM2045-1.50
SGM2045-1.80
SGM2045-1.825
SGM2045-2.20
SGM2045-2.50
SGM2045-2.80
SGM2045-2.90
SGM2045-3.00
SGM2045-3.30
SGM2045-4.20
-40℃ to +125℃ SGM2045-0.60XXDH4G/TR
-40℃ to +125℃ SGM2045-0.75XXDH4G/TR
-40℃ to +125℃ SGM2045-0.80XXDH4G/TR
-40℃ to +125℃ SGM2045-0.85XXDH4G/TR
-40℃ to +125℃ SGM2045-1.00XXDH4G/TR
-40℃ to +125℃ SGM2045-1.05XXDH4G/TR
-40℃ to +125℃ SGM2045-1.10XXDH4G/TR
-40℃ to +125℃ SGM2045-1.20XXDH4G/TR
-40℃ to +125℃ SGM2045-1.50XXDH4G/TR
-40℃ to +125℃ SGM2045-1.80XXDH4G/TR
-40℃ to +125℃ SGM2045-1.825XXDH4G/TR
-40℃ to +125℃ SGM2045-2.20XXDH4G/TR
-40℃ to +125℃ SGM2045-2.50XXDH4G/TR
-40℃ to +125℃ SGM2045-2.80XXDH4G/TR
-40℃ to +125℃ SGM2045-2.90XXDH4G/TR
-40℃ to +125℃ SGM2045-3.00XXDH4G/TR
-40℃ to +125℃ SGM2045-3.30XXDH4G/TR
-40℃ to +125℃ SGM2045-4.20XXDH4G/TR
08
09
10
11
12
13
15
16
MC
17
2W
1Q
18
19
1P
20
21
22
J1
SGM2045-0.60 WLCSP-0.64×0.64-4B-A -40℃ to +125℃
SGM2045-0.80 WLCSP-0.64×0.64-4B-A -40℃ to +125℃
SGM2045-0.85 WLCSP-0.64×0.64-4B-A -40℃ to +125℃
SGM2045-1.00 WLCSP-0.64×0.64-4B-A -40℃ to +125℃
SGM2045-1.05 WLCSP-0.64×0.64-4B-A -40℃ to +125℃
SGM2045-1.10 WLCSP-0.64×0.64-4B-A -40℃ to +125℃
SGM2045-1.20 WLCSP-0.64×0.64-4B-A -40℃ to +125℃
SGM2045-1.75 WLCSP-0.64×0.64-4B-A -40℃ to +125℃
SGM2045-1.80 WLCSP-0.64×0.64-4B-A -40℃ to +125℃
SGM2045-1.825 WLCSP-0.64×0.64-4B-A -40℃ to +125℃
SGM2045-2.50 WLCSP-0.64×0.64-4B-A -40℃ to +125℃
SGM2045-0.60XG/TR
SGM2045-0.80XG/TR
SGM2045-0.85XG/TR
SGM2045-1.00XG/TR
SGM2045-1.05XG/TR
SGM2045-1.10XG/TR
SGM2045-1.20XG/TR
SGM2045-1.75XG/TR
SGM2045-1.80XG/TR
SGM2045-1.825XG/TR
SGM2045-2.50XG/TR
J2
J4
J5
JA
JD
K9
1P
KA
4N
KB
Tape and Reel,
5000
SG Micro Corp
www.sg-micro.com
OCTOBER 2022
2
300mA, Low VIN, Ultra-Low Noise
and High PSRR Linear Regulator
SGM2045
PACKAGE/ORDERING INFORMATION (continued)
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
DESCRIPTION
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
MODEL
Tape and Reel,
5000
Tape and Reel,
5000
Tape and Reel,
5000
Tape and Reel,
5000
SGM2045-2.80 WLCSP-0.64×0.64-4B-A -40℃ to +125℃
SGM2045-2.90 WLCSP-0.64×0.64-4B-A -40℃ to +125℃
SGM2045-3.00 WLCSP-0.64×0.64-4B-A -40℃ to +125℃
SGM2045-3.30 WLCSP-0.64×0.64-4B-A -40℃ to +125℃
SGM2045-4.20 WLCSP-0.64×0.64-4B-A -40℃ to +125℃
SGM2045-2.80XG/TR
SGM2045-2.90XG/TR
SGM2045-3.00XG/TR
SGM2045-3.30XG/TR
SGM2045-4.20XG/TR
KD
00
KF
L2
L4
Tape and Reel,
5000
MARKING INFORMATION
YY
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.
OVERSTRESS CAUTION
ABSOLUTE MAXIMUM RATINGS
IN to GND ............................................................ -0.3V to 6V
EN to GND........................................................... -0.3V to 6V
OUT to GND .......................................... -0.3V to (VIN + 0.3V)
Package Thermal Resistance
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.
XTDFN-1×1-4L, θJA.................................................. 242℃/W
XTDFN-1×1-4L, θJB.................................................. 107℃/W
XTDFN-1×1-4L, θJC ................................................. 238℃/W
WLCSP-0.64×0.64-4B-A, θJA................................... 285℃/W
WLCSP-0.64×0.64-4B-A, θJB..................................... 50℃/W
WLCSP-0.64×0.64-4B-A, θJC................................... 116℃/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 tocomplete device failure. Precision
integrated circuits may be more susceptible to damage
because even small parametric changes could cause the
device not to meet the published specifications.
HBM.............................................................................8000V
CDM ............................................................................1000V
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range...........................................1.1V to 5.5V
Enable Input Voltage Range..................................0V to 5.5V
Input Effective Capacitance, CIN ......................... 0.1μF (MIN)
Output Effective Capacitance, COUT...........0.5μF to 200μF (1)
Operating Junction Temperature Range......-40℃ to +125℃
DISCLAIMER
SG Micro Corp reserves the right to make any change in
circuit design, or specifications without prior notice.
NOTE:
1. To maintain a 100μA minimum output current when the
output effective capacitance is more than 10μF.
SG Micro Corp
www.sg-micro.com
OCTOBER 2022
3
300mA, Low VIN, Ultra-Low Noise
and High PSRR Linear Regulator
SGM2045
PIN CONFIGURATIONS
(TOP VIEW)
(TOP VIEW)
IN
4
EN
1
2
3
A
B
IN
OUT
Exposed
Pad
EN
GND
1
2
OUT
GND
XTDFN-1×1-4L
WLCSP-0.64×0.64-4B-A
PIN DESCRIPTION
PIN
NAME
FUNCTION
WLCSP-
XTDFN-1×1-4L
0.64×0.64-4B-A
Regulator Output Pin. It is recommended to use a ceramic capacitor with
effective capacitance in the range of 0.5μF to 200μF to ensure stability. This
ceramic capacitor should be placed as close as possible to OUT pin.
1
2
3
A2
OUT
GND
EN
B2
B1
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 0.03μA pull-down current source. This pin
must be connected to IN pin if enable functionality is not used.
Input Supply Voltage Pin. It is recommended to use a 1μF or larger ceramic
capacitor from IN pin to ground to get good power supply decoupling. This
ceramic capacitor should be placed as close as possible to IN pin.
4
A1
IN
Exposed Pad. Connect it to a large ground plane to maximize thermal
performance; this pad is not an electrical connection point.
Exposed Pad
—
—
SG Micro Corp
www.sg-micro.com
OCTOBER 2022
4
300mA, Low VIN, Ultra-Low Noise
and High PSRR Linear Regulator
SGM2045
ELECTRICAL CHARACTERISTICS
(VIN = (VOUT(NOM) + 0.3V) or 1.1V (whichever is greater), VEN = VIN, CIN = COUT = 1µF, TJ = -40℃ to +125℃, typical values are
at TJ = +25℃, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
1.1
1.2
1.3
1.4
-12
TYP
MAX UNITS
I
OUT = 60mA
5.5
IOUT = 100mA
IOUT = 200mA
IOUT = 300mA
5.5
V
Input Voltage Range
VIN
5.5
5.5
12
I
OUT = 0.1mA, VOUT(NOM) < 1.2V, TJ = +25℃
mV
30
IOUT = 0.1mA to 300mA, VIN = (VOUT(NOM) + 0.3V) to 5.5V,
VOUT(NOM) < 1.2V, TJ = -40℃ to +125℃
IOUT = 0.1mA, VOUT(NOM) ≥ 1.2V, TJ = +25℃
IOUT = 0.1mA to 300mA, VIN = (VOUT(NOM) + 0.3V) to 5.5V,
-30
-1
Output Voltage Accuracy
VOUT
1
%
-2.5
2.5
VOUT(NOM) ≥ 1.2V, TJ = -40℃ to +125℃
Line Regulation
Load Regulation
ΔVLNR
VIN = (VOUT(NOM) + 0.3V) to 5.5V, IOUT = 0.1mA
0.05
0.4
65
2.5
10
mV
ΔVLDR/VOUT IOUT = 0.1mA to 300mA
OUT = 60mA
mV/V
I
1.05V ≤ VOUT(NOM) < 1.2V
1.05V ≤ VOUT(NOM) < 1.2V
1.2V ≤ VOUT(NOM) < 1.5V
1.05V ≤ VOUT(NOM) < 1.2V
1.2V ≤ VOUT(NOM) < 1.5V
1.05V ≤ VOUT(NOM) < 1.2V
1.2V ≤ VOUT(NOM) < 1.5V
1.5V ≤ VOUT(NOM) < 1.8V
1.8V ≤ VOUT(NOM) < 2.8V
2.8V ≤ VOUT(NOM) ≤ 4.2V
1.8V ≤ VOUT(NOM) < 2.8V
2.8V ≤ VOUT(NOM) ≤ 4.2V
TJ = -20℃ to +125℃
TJ = -40℃ to +125℃
110
160
110
260
210
360
300
220
190
150
130
120
100
65
IOUT = 100mA
IOUT = 200mA
185
125
260
185
125
100
70
Dropout Voltage (1)
VDROP
mV
IOUT = 300mA
IOUT = 300mA, XTDFN-1×1-4L
80
IOUT = 300mA,
WLCSP-0.64×0.64-4B-A
50
300
260
600
600
380
15
V
OUT = 90% × VOUT(NOM),
Output Current Limit
ILIMIT
mA
VIN = (VOUT(NOM) + 0.3V) or 1.4V
Short-Circuit Current
Quiescent Current
ISHORT
IQ
ISHDN
VIH
VOUT = 0V
mA
µA
µA
IOUT = 0mA
40
2
Shutdown Supply Current
VEN = 0V, VIN = 5.5V
0.03
0.7
EN Input Threshold Voltage
VIN = 1.1V to 5.5V
V
VIL
0.3
1
EN Pull-Down Current
Output Discharge Resistance
Turn-On Time
IEN
VEN = 5.5V, VIN = 5.5V
0.03
60
µA
Ω
RDIS
tON
VEN = 0V, VOUT = 0.2V, VIN = 3.3V
From EN rising from 0V to VIN to 90% × VOUT(NOM), no load
f = 100Hz
100
90
240
µs
f = 1kHz
92
I
OUT = 20mA, VOUT(NOM) = 1.8V,
Power Supply Rejection Ratio
PSRR
dB
VIN = 2.8V
f = 10kHz
f = 100kHz
80
53
Output Voltage Noise
en
f = 10Hz to 100kHz, IOUT = 20mA, VOUT(NOM) = 1.8V
9.5
160
20
µVRMS
℃
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
TSHDN
ΔTSHDN
℃
NOTE:
1. The dropout voltage is defined as the difference between VIN and VOUT when VOUT falls to (VOUT(NOM) - 50mV).
SG Micro Corp
www.sg-micro.com
OCTOBER 2022
5
300mA, Low VIN, Ultra-Low Noise
and High PSRR Linear Regulator
SGM2045
TYPICAL PERFORMANCE CHARACTERISTICS
TJ = +25℃, VIN = (VOUT(NOM) + 0.3V) or 1.1V (whichever is greater), VEN = VIN, CIN = COUT = 1µF, unless otherwise noted.
Line Transient Response
Line Transient Response
VIN
VIN
VOUT
VOUT
VOUT = 1.8V, IOUT = 10mA, VIN = 2.3V to 3.3V
VOUT = 1.8V, IOUT = 300mA, VIN = 2.3V to 3.3V
Time (20μs/div)
Time (20μs/div)
Load Transient Response
Load Transient Response
VOUT
VOUT
IOUT
IOUT
VOUT = 1.8V, IOUT = 1mA to 300mA, COUT = 4.7μF
VOUT = 1.8V, IOUT = 1mA to 300mA, COUT = 1μF
Time (10μs/div)
Time (10μs/div)
Line Transient Response
Line Transient Response
VIN
VIN
VOUT
VOUT
VOUT = 2.8V, IOUT = 300mA, VIN = 3.1V to 4.1V
VOUT = 2.8V, IOUT = 10mA, VIN = 3.1V to 4.1V
Time (20μs/div)
Time (20μs/div)
SG Micro Corp
www.sg-micro.com
OCTOBER 2022
6
300mA, Low VIN, Ultra-Low Noise
and High PSRR Linear Regulator
SGM2045
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
TJ = +25℃, VIN = (VOUT(NOM) + 0.3V) or 1.1V (whichever is greater), VEN = VIN, CIN = COUT = 1µF, unless otherwise noted.
Load Transient Response
Load Transient Response
IOUT
IOUT
VOUT
VOUT
VOUT = 2.8V, IOUT = 1mA to 300mA, COUT = 1μF
VOUT = 2.8V, IOUT = 1mA to 300mA, COUT = 4.7μF
Time (20μs/div)
Time (20μs/div)
Power Supply Rejection Ratio vs. Frequency
IOUT = 2mA
Power Supply Rejection Ratio vs. Frequency
IOUT = 2mA
120
100
80
60
40
20
0
120
100
80
60
40
20
0
I
I
OUT = 20mA
OUT = 300mA
I
I
OUT = 20mA
OUT = 300mA
VOUT = 1.8V
VOUT = 2.8V
0.01
0.1
1
10
100
1000 10000
0.01
0.1
1
10
100
1000 10000
Frequency (kHz)
Frequency (kHz)
Output Noise Density vs. Frequency
IOUT = 2mA
Output Noise Density vs. Frequency
IOUT = 2mA
10000
1000
100
10
10000
1000
100
10
I
I
OUT = 20mA
OUT = 300mA
I
I
OUT = 20mA
OUT = 300mA
VOUT = 1.8V
VOUT = 2.8V
1
1
0.01
0.1
1
10
100
0.01
0.1
1
10
100
Frequency (kHz)
Frequency (kHz)
SG Micro Corp
www.sg-micro.com
OCTOBER 2022
7
300mA, Low VIN, Ultra-Low Noise
and High PSRR Linear Regulator
SGM2045
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
TJ = +25℃, VIN = (VOUT(NOM) + 0.3V) or 1.1V (whichever is greater), VEN = VIN, CIN = COUT = 1µF, unless otherwise noted.
Ground Pin Current vs. Output Current
Ground Pin Current vs. Output Current
1400
1200
1000
800
600
400
200
0
1400
1200
1000
800
600
400
200
0
VOUT = 1.8V,
XTDFN-1×1-4L
VOUT = 2.8V,
XTDFN-1×1-4L
0
0
0
50
100
150
200
250
300
0
0
0
50
100
150
200
250
300
Output Current (mA)
Output Current (mA)
Ground Pin Current vs. Output Current
Ground Pin Current vs. Output Current
1400
1200
1000
800
600
400
200
0
1400
1200
1000
800
600
400
200
0
VOUT = 1.8V,
WLCSP-0.64×0.64-4B-A
VOUT = 2.8V,
WLCSP-0.64×0.64-4B-A
50
100
150
200
250
300
50
100
150
200
250
300
Output Current (mA)
Output Current (mA)
Dropout Voltage vs. Output Current
Dropout Voltage vs. Output Current
140
120
100
80
100
80
60
40
20
0
TJ = -40℃
TJ = -40℃
TJ = +25℃
TJ = +25℃
TJ = +125℃
TJ = +125℃
60
40
20
VOUT = 1.8V,
XTDFN-1×1-4L
VOUT = 2.8V,
XTDFN-1×1-4L
0
50
100
150
200 250 300
50
100
150
200 250 300
Output Current (mA)
Output Current (mA)
SG Micro Corp
www.sg-micro.com
OCTOBER 2022
8
300mA, Low VIN, Ultra-Low Noise
and High PSRR Linear Regulator
SGM2045
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
TJ = +25℃, VIN = (VOUT(NOM) + 0.3V) or 1.1V (whichever is greater), VEN = VIN, CIN = COUT = 1µF, unless otherwise noted.
Dropout Voltage vs. Output Current
Dropout Voltage vs. Output Current
100
80
60
40
20
0
70
60
50
40
30
20
10
0
TJ = -40℃
TJ = -40℃
TJ = +25℃
TJ = +25℃
TJ = +125℃
TJ = +125℃
VOUT = 1.8V,
WLCSP-0.64×0.64-4B-A
VOUT = 2.8V,
WLCSP-0.64×0.64-4B-A
0
50
100
150
200
250
300
0
50
100
150
200
250
300
Output Current (mA)
Output Current (mA)
Dropout Voltage vs. Temperature
Dropout Voltage vs. Temperature
140
120
100
80
140
120
100
80
60
60
40
40
VOUT = 1.8V,
IOUT = 300mA,
VOUT = 2.8V,
IOUT = 300mA,
20
20
XTDFN-1×1-4L
XTDFN-1×1-4L
0
0
-40 -25 -10
5
20 35 50 65 80 95 110 125
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (℃)
Temperature (℃)
Dropout Voltage vs. Temperature
Dropout Voltage vs. Temperature
140
120
100
80
140
120
100
80
60
60
40
40
20
20
VOUT = 1.8V, IOUT = 300mA,
VOUT = 2.8V, IOUT = 300mA,
WLCSP-0.64×0.64-4B-A
WLCSP-0.64×0.64-4B-A
0
0
-40 -25 -10
5
20 35 50 65 80 95 110 125
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (℃)
Temperature (℃)
SG Micro Corp
www.sg-micro.com
OCTOBER 2022
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300mA, Low VIN, Ultra-Low Noise
and High PSRR Linear Regulator
SGM2045
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
TJ = +25℃, VIN = (VOUT(NOM) + 0.3V) or 1.1V (whichever is greater), VEN = VIN, CIN = COUT = 1µF, unless otherwise noted.
Output Voltage vs. Temperature
Output Voltage vs. Temperature
1.810
1.805
1.800
1.795
1.790
1.785
1.780
2.810
2.805
2.800
2.795
2.790
2.785
2.780
VOUT = 2.8V,
XTDFN-1×1-4L
VOUT = 1.8V,
XTDFN-1×1-4L
IOUT = 0.1mA
IOUT = 0.1mA
IOUT = 300mA
IOUT = 300mA
-40 -25 -10
5
20 35 50 65 80 95 110 125
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (℃)
Temperature (℃)
Load Regulation vs. Temperature
Load Regulation vs. Temperature
4
4
VOUT = 2.8V,
VOUT = 1.8V,
IOUT = 300mA,
XTDFN-1×1-4L
IOUT = 300mA,
XTDFN-1×1-4L
2
0
2
0
-2
-4
-6
-8
-2
-4
-6
-8
-40 -25 -10
5
20 35 50 65 80 95 110 125
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (℃)
Temperature (℃)
Load Regulation vs. Temperature
Load Regulation vs. Temperature
2
1
2
1
VOUT = 1.8V, IOUT = 300mA,
WLCSP-0.64×0.64-4B-A
VOUT = 2.8V, IOUT = 300mA,
WLCSP-0.64×0.64-4B-A
0
0
-1
-2
-3
-4
-1
-2
-3
-4
-40 -25 -10
5
20 35 50 65 80 95 110 125
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (℃)
Temperature (℃)
SG Micro Corp
www.sg-micro.com
OCTOBER 2022
10
300mA, Low VIN, Ultra-Low Noise
and High PSRR Linear Regulator
SGM2045
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
TJ = +25℃, VIN = (VOUT(NOM) + 0.3V) or 1.1V (whichever is greater), VEN = VIN, CIN = COUT = 1µF, unless otherwise noted.
Enable Turn-On Response
Enable Turn-On Response
2
2
1.5
1.5
VEN
VEN
0.5
0.5
I
I
IN
IN
-0.5
-1
-0.5
-1
V
OUT
V
OUT
VOUT = 1.8V, IOUT = 10mA, COUT = 1μF
Time (50μs/div)
VOUT = 1.8V, IOUT = 300mA, COUT = 1μF
Time (50μs/div)
-2
-2
Enable Turn-On Response
Enable Turn-On Response
2
2
1.5
1.5
VEN
V
EN
0.5
0.5
I
I
IN
IN
-0.5
-1
-0.5
-1
V
OUT
V
OUT
VOUT = 1.8V, IOUT = 10mA, COUT = 10μF
Time (50μs/div)
VOUT = 1.8V, IOUT = 300mA, COUT = 10μF
Time (50μs/div)
-2
-2
Enable Turn-Off Response
VEN
VOUT
COUT = 1μF
C
C
OUT = 4.7μF
OUT = 10μF
VOUT = 1.8V, IOUT = 300mA
Time (200μs/div)
SG Micro Corp
www.sg-micro.com
OCTOBER 2022
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300mA, Low VIN, Ultra-Low Noise
and High PSRR Linear Regulator
SGM2045
FUNCTIONAL BLOCK DIAGRAM
IN
OUT
Sub-Regulator
GND
RDIS
R1
Short-Circuit &
Thermal Protection
Voltage
Reference
C1
EN
Shutdown
SGM2045
Figure 2. Block Diagram
SG Micro Corp
www.sg-micro.com
OCTOBER 2022
12
300mA, Low VIN, Ultra-Low Noise
and High PSRR Linear Regulator
SGM2045
APPLICATION INFORMATION
The SGM2045 is a low VIN, ultra-low noise and low
dropout LDO and provides 300mA 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 SGM2045 useful in a
variety of applications. The SGM2045 provides the
protection functions for output overload, output
short-circuit condition and overheating.
transistor is active to discharge the output voltage
through a 60Ω (TYP) resistor.
When the EN pin voltage is higher than 0.7V, 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 internal 0.03μA (TYP)
current source when the EN pin is floated. This current
source will ensure the SGM2045 in shutdown state and
reduce the power dissipation in system.
The SGM2045 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 0.03μA (TYP).
Reverse Current Protection
The PMOS power transistor has an inherent body
diode. This body diode will be forward biased when
VOUT > VIN. When VOUT > VIN, the reverse current
flowing from the OUT pin to the IN pin will damage the
SGM2045. If VOUT > VIN event would happen in system,
one external diode will be added between OUT pin and
IN pin in circuit design to protect the SGM2045.
Input Capacitor Selection (CIN)
The input decoupling capacitor should be placed as
close as possible to the IN pin to ensure the device
stability. 1μF or larger 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 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.
External Diode
VIN
VOUT
OUT
IN
SGM2045
ON
OFF
CIN
1μF
COUT
1μF
EN
GND
Output Capacitor Selection (COUT
)
The output capacitor should be placed 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 SGM2045 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.
Additionally, COUT with larger capacitance and lower
ESR will help increase the high frequency PSRR and
improve the load transient response.
Figure 3. Reverse Protection Reference Design
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.
VOUT
VIN
Enable Operation
OUT
IN
The EN pin of the SGM2045 is used to enable/disable
its device and to deactivate/activate the output
automatic discharge function.
SGM2045
ON
Schottky
Diode
CIN
1μF
COUT
1μF
EN
GND
OFF
When the EN pin voltage is lower than 0.3V, the device
is in shutdown state. There is no current flowing from IN
to OUT pins. In this state, the automatic discharge
Figure 4. Negatively Biased Output Application
SG Micro Corp
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OCTOBER 2022
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300mA, Low VIN, Ultra-Low Noise
and High PSRR Linear Regulator
SGM2045
APPLICATION INFORMATION (continued)
starts the thermal shutdown function and turns the pass
element off.
Output Current Limit and Short-Circuit
Protection
When overload events happen, the output current is
internally limited to 600mA (TYP). When the OUT pin is
shorted to ground, the short-circuit protection will limit
the output current to 380mA (TYP).
Therefore, thermal analysis for the chosen application is
important to guarantee reliable performance over all
conditions. To guarantee reliable operation, the junction
temperature of the SGM2045 must not exceed +125℃.
Thermal Shutdown
The maximum allowable power dissipation depends on
the thermal resistance of the IC package, the PCB
layout, the rate of surrounding airflow, and the
difference between the junction temperature and
ambient temperature. The maximum power dissipation
can be approximated using the following equation:
The SGM2045 can detect the temperature of die. When
the die temperature exceeds the threshold value of
thermal shutdown, the SGM2045 will be in shutdown
state and it will remain in this state until the die
temperature decreases to +140℃.
PD(MAX) = (TJ(MAX) - TA)/θJA
(1)
Power Dissipation (PD)
Thermal protection limits power dissipation in the
SGM2045. When power dissipation on pass element
(PD = (VIN - VOUT) × IOUT) is too much and the operating
junction temperature exceeds +160℃, the OTP circuit
where TJ(MAX) is the maximum junction temperature, TA
is the ambient temperature, and θJA is the
junction-to-ambient thermal resistance.
SG Micro Corp
www.sg-micro.com
OCTOBER 2022
14
300mA, Low VIN, Ultra-Low Noise
and High PSRR Linear Regulator
SGM2045
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
OCTOBER 2022 ‒ REV.B to REV.B.1
Page
Added SGM2045-2.20XXDH4G/TR to Package/Ordering Information section.....................................................................................................2
SEPTEMBER 2022 ‒ REV.A.4 to REV.B
Page
Added SGM2045-1.825XXDH4G/TR to Package/Ordering Information section ...................................................................................................2
AUGUST 2022 ‒ REV.A.3 to REV.A.4
Page
Added SGM2045-2.90 to Package/Ordering Information section .........................................................................................................................2
AUGUST 2022 ‒ REV.A.2 to REV.A.3
Page
Updated Recommended Operating Conditions section........................................................................................................................................3
Updated Electrical Characteristics section...........................................................................................................................................................5
DECEMBER 2021 ‒ REV.A.1 to REV.A.2
Page
Updated Electrical Characteristics section...........................................................................................................................................................5
Updated Typical Performance Characteristics section.....................................................................................................................................7, 9
OCTOBER 2021 ‒ REV.A to REV.A.1
Page
Updated Electrical Characteristics section...........................................................................................................................................................5
Changes from Original (SEPTEMBER 2021) to REV.A
Page
Changed from product preview to production data.............................................................................................................................................All
SG Micro Corp
www.sg-micro.com
OCTOBER 2022
15
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
XTDFN-1×1-4L
D
b
N4
L
D1
E1
k
E
DETAIL A
DETAIL C
L1
N1
PIN 1 #
e
DETAIL B
TOP VIEW
BOTTOM VIEW
SEATING PLANE
eee C
3-C0.18
0.25
0.48
0.40
A
C
A2
A1
1.30
SIDE VIEW
0.2
45°
0.47
0.48
0.22
ALTERNATE A-1
ALTERNATE A-2
ALTERNATE B-1 ALTERNATE B-2
ALTERNATE C-1 ALTERNATE C-2
0.65
DETAIL A
ALTERNATE PIN 1
CONSTRUCTION
DETAIL B
ALTERNATE TERMINAL
CONSTRUCTION
DETAIL C
ALTERNATE TERMINAL
CONSTRUCTION
RECOMMENDED LAND PATTERN (Unit: mm)
Dimensions In Millimeters
Symbol
MIN
MOD
0.370
0.020
0.100 REF
-
MAX
0.400
0.050
A
A1
A2
b
0.340
0.000
0.170
0.950
0.950
0.430
0.430
0.200
0.200
0.300
1.050
1.050
0.530
0.530
0.300
0.370
D
1.000
1.000
0.480
0.480
0.250
-
E
D1
E1
L
L1
e
0.650 BSC
-
k
0.150
-
-
-
eee
0.050
NOTE: This drawing is subject to change without notice.
SG Micro Corp
TX00167.002
www.sg-micro.com
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
WLCSP-0.64×0.64-4B-A
0.18
4 × Φ
D
0.16
A1 CORNER
E
0.35
0.35
TOP VIEW
RECOMMENDED LAND PATTERN (Unit: mm)
4 × Φd
2
1
A
B
A
e
A1
e
SIDE VIEW
BOTTOM VIEW
Dimensions In Millimeters
Symbol
MIN
MOD
0.290
MAX
0.318
0.070
0.670
0.670
0.210
A
A1
D
E
0.262
0.050
0.620
0.620
0.190
0.060
0.645
0.645
d
0.200
e
0.350 BSC
NOTE: This drawing is subject to change without notice.
SG Micro Corp
TX00195.000
www.sg-micro.com
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
XTDFN-1×1-4L
7″
9.5
9.5
1.16
0.74
1.16
0.74
0.50
0.37
4.0
4.0
2.0
4.0
2.0
2.0
8.0
8.0
Q1
Q1
WLCSP-0.64×0.64-4B-A
7″
SG Micro Corp
TX10000.000
www.sg-micro.com
PACKAGE INFORMATION
CARTON BOX DIMENSIONS
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF CARTON BOX
Length
(mm)
Width
(mm)
Height
(mm)
Reel Type
Pizza/Carton
7″ (Option)
7″
368
442
227
410
224
224
8
18
SG Micro Corp
www.sg-micro.com
TX20000.000
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