SGM2031
Low Power, Low Dropout,
RF - Linear Regulators
GENERAL DESCRIPTION
The SGM2031 series low-power, low-dropout, CMOS
linear voltage regulators operate from a 2.5V to 5.5V
input voltage in an ultra small package. They are the
perfect choice for low voltage, low power applications. A
low ground current makes this part attractive for battery
operated power systems. The SGM2031 series also offer
ultra low dropout voltage to prolong battery life in portable
electronics. Systems requiring a quiet voltage source,
such as RF applications, will benefit from the SGM2031
series’ low output noise and high PSRR.
Other features include a 10nA logic-controlled shutdown
mode, foldback current limit and thermal shut-down
protection.
The SGM2031 is available in Green UTDFN-1×1-4L
package. It operates over an ambient temperature range
of -40°C to +85°C.
FEATURES
Low Dropout Voltage
Thermal-Overload Protection
Output Current Limit
High PSRR (72dB at 1kHz)
10nA Logic-Controlled Shutdown
Available in Multiple Output Voltage Versions
Fixed Outputs of 1.2V, 1.5V, 1.8V, 2.5V, 2.6V, 2.8V,
2.85V, 3.0V and 3.3V
-40℃ to +85℃ Operating Temperature Range
Available in Green UTDFN-1×1-4L Package
APPLICATIONS
Cellular Telephones
Cordless Telephones
PHS Telephones
PCMCIA Cards
Modems
MP3 Player
TYPICAL APPLICATION
INPUT
2.5V to 5.5V
C
IN
1μF
ON
OFF
3
4
1
Hand-Held Instruments
Palmtop Computers
Electronic Planners
Portable/Battery-Powered Equipment
IN
OUTPUT
C
OUT
1μF
OUT
SGM2031
EN
GND
2
SG Micro Corp
www.sg-micro.com
REV. B. 1
SGM2031
PACKAGE/ORDERING INFORMATION
MODEL
SGM2031-1.2
SGM2031-1.5
SGM2031-1.8
SGM2031-2.5
SGM2031-2.6
SGM2031-2.8
SGM2031-2.85
SGM2031-3.0
SGM2031-3.3
V
OUT
(V)
1.2V
1.5V
1.8V
2.5V
2.6V
2.8V
2.85V
3.0V
3.3V
PIN-
PACKAGE
UTDFN-1×1-4L
UTDFN-1×1-4L
UTDFN-1×1-4L
UTDFN-1×1-4L
UTDFN-1×1-4L
UTDFN-1×1-4L
UTDFN-1×1-4L
UTDFN-1×1-4L
UTDFN-1×1-4L
ORDERING
NUMBER
SGM2031-1.2YUDH4G/TR
SGM2031-1.5YUDH4G/TR
SGM2031-1.8YUDH4G/TR
SGM2031-2.5YUDH4G/TR
SGM2031-2.6YUDH4G/TR
SGM2031-2.8YUDH4G/TR
SGM2031-2.85YUDH4G/TR
SGM2031-3.0YUDH4G/TR
SGM2031-3.3YUDH4G/TR
Low Power, Low Dropout,
RF-Linear Regulators
PACKAGE
MARKING
64
9F
51
A0
B8
52
B9
53
57
PACKAGE
OPTION
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
NOTE: Order number is defined as the follow:
ORDER NUMBER
SGM2031 - X X X G / TR
Tape and Reel
Green Product
Package Type
UDH4
UTDFN-1×1-4L
Operating Temperature Range
Y
-40℃ to +85℃
Output Voltages
1.2
1.5
1.8
2.5
2.6
2.8
2.85
3.0
3.3
1.2V
1.5V
1.8V
2.5V
2.6V
2.8V
2.85V
3.0V
3.3V
SG Micro Corp
www.sg-micro.com
2
SGM2031
ABSOLUTE MAXIMUM RATINGS
IN to GND.................................................................. -0.3V to 6V
Output Short-Circuit Duration ...........................................Infinite
EN to GND................................................................ -0.3V to V
IN
OUT to GND............................................... -0.3V to (V
IN
+ 0.3V)
Power Dissipation, P
D
@ T
A
= 25℃
UTDFN-1×1-4L............................................................... 400mW
Package Thermal Resistance
UTDFN-1×1-4L,
θ
JA
.......................................................280℃/W
Operating Temperature Range............................ -40℃ to +85℃
Junction Temperature........................................................ 150℃
Storage Temperature Range............................. -65℃ to +150℃
Lead Temperature (Soldering, 10s)................................... 260℃
ESD Susceptibility
HBM................................................................................. 4000V
MM......................................................................................400V
NOTE:
Stresses beyond those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device. These
are stress ratings only, and functional operation of the device at
these or any other conditions beyond those indicated in the
operational sections of the specifications is not implied.
Exposure to absolute maximum rating conditions for extended
periods may affect device reliability.
Low Power, Low Dropout,
RF-Linear Regulators
CAUTION
This integrated circuit can be damaged by ESD if you don’t pay
attention to ESD protection. 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
very small parametric changes could cause the device not to
meet its published specifications.
SGMICRO reserves the right to make any change in circuit
design, specification or other related things if necessary without
notice at any time. Please contact SGMICRO sales office to get
the latest datasheet.
SG Micro Corp
www.sg-micro.com
3
SGM2031
Low Power, Low Dropout,
RF-Linear Regulators
PIN CONFIGURATION
(TOP VIEW)
IN
4
EN
3
NC
1
2
OUT
GND
UTDFN-1×1-4L
PIN DESCRIPTION
PIN
1
2
3
4
Exposed
Pad
NAME
OUT
GND
EN
IN
NC
Regulator Output.
Ground.
Shutdown Input. A logic low reduces the supply current to 10nA. Connect to
IN for normal operation.
Regulator Input. Supply voltage can range from 2.5V to 5.5V. Bypass with a
1μF capacitor to GND.
No Connection.
FUNCTION
SG Micro Corp
www.sg-micro.com
4
SGM2031
Low Power, Low Dropout,
RF-Linear Regulators
(1)
ELECTRICAL CHARACTERISTICS
(V
IN
= V
OUT (NOMINAL)
+ 0.5V , Full = -40°C to +85°C, unless otherwise noted.)
PARAMETER
Input Voltage
Output Voltage Accuracy
Current Limit
(1)
(1)
(1), (5)
SYMBOL
V
IN
CONDITIONS
I
OUT
= 0.1mA
TEMP
+25℃
+25℃
+25℃
+25℃
MIN
2.5
-3
250
260
TYP
MAX
5.5
+3
UNITS
V
%
mA
mA
Maximum Output Current
Ground Pin Current
Dropout Voltage
Line Regulation
(2)
I
LIM
I
Q
No Load, EN = 2V
I
OUT
= 1mA
ΔV
LNR
ΔV
LDR
e
n
PSRR
I
OUT
= 250mA
V
IN
= 2.5V or (V
OUT
+ 0.5V) to 5.5V,
I
OUT
= 1mA
I
OUT
= 0.1mA to 250mA, C
OUT
= 1µF,
V
OUT
> 2V
I
OUT
= 0.1mA to 250mA, C
OUT
= 1µF,
V
OUT
≤
2V
f = 10Hz to 100kHz, C
OUT
= 10µF
I
LOAD
= 50mA, C
OUT
= 1μF,
V
IN
= V
OUT
+ 1V
f = 217Hz
f = 1kHz
+25℃
+25℃
+25℃
+25℃
95
0.9
230
0.02
0.002
0.004
200
400
0.05
0.005
µA
mV
%/V
%/mA
(1)
Load Regulation
Output Voltage Noise
Power Supply Rejection Ratio
0.008
µV
RMS
dB
dB
+25℃
+25℃
+25℃
Full
Full
+25℃
Full
+25℃
Full
+25℃
1.5
140
72
72
SHUTDOWN
(3)
EN Input Threshold
EN Input Bias Current
Shutdown Supply Current
Shutdown Exit Delay
(4)
V
IH
V
IL
I
B(SHDN)
I
Q(SHDN)
V
IN
= 2.5V to 5.5V, V
EN
= -0.3V to V
IN
EN = 0V and EN = 5.5V
EN = 0.4V
C
OUT
= 1μF, No Load
0.3
0.01
0.01
0.01
0.01
10
1
1
V
μA
μA
μs
℃
℃
THERMAL PROTECTION
Thermal Shutdown
Temperature
Thermal Shutdown
Hysteresis
T
SHDN
ΔT
SHDN
150
15
NOTES:
1. V
IN
= V
OUT (NOMINAL)
+ 0.5V or 2.5V, whichever is greater.
2. The dropout voltage is defined as V
IN
- V
OUT
, when V
OUT
is 100mV below the value of V
OUT
for V
IN
= V
OUT
+ 0.5V.
(Only applicable for V
OUT
= +2.5V to +5.0V.)
3. V
EN
= -0.3V to V
IN
4. Time needed for V
OUT
to reach 90% of final value.
5. Maximum output current is affected by PCB layout, size of metal trace, the thermal conduction path between metal layers,
operating temperature and the other environment factor of system.
SG Micro Corp
www.sg-micro.com
5
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