SGM2027
Dual, Low Dropout,
250mA LDO Regulator
GENERAL DESCRIPTION
The SGM2027 is a dual, low-power, low-dropout, CMOS
linear voltage regulator. It operates from a 2.5V to 5.5V
input voltage and delivers up to 250mA at each channel.
The SGM2027 is the perfect choice for low voltage, low
power. The ground current is 190μA (both LDO’s enabled
and active) that makes this part attractive for battery
operated power systems. The SGM2027 also offers low
dropout voltage (250mV at 250mA output) to prolong
battery life in portable electronics.
Separate enable pins control each individual LDO output.
The EN function allows the output of each regulator to be
turned off independently, resulting in greatly reduced
power consumption. Other features include a 10nA
logic-controlled shutdown mode, current limit and thermal
shutdown protection.
The SGM2027 is available in Green TSOT-23-6 package.
It operates over an ambient temperature range of -40℃
to +85℃.
FEATURES
Highly Accurate: ±2%
Ultra-Low Dropout Voltage:
250mV at 250mA Output
190µA No-Load Supply Current
Thermal-Overload Protection
Output Current Limit
10nA Logic-Controlled Shutdown
Operating Temperature Range: -40℃ to +85℃
Available in Green TSOT-23-6 Package
APPLICATIONS
Cellular Telephones
Cordless Telephones
PCMCIA Cards
Modems
MP3 Player
Hand-Held Instruments
Palmtop Computers
Wireless LAN
Portable/Battery-Powered Equipment
TYPICAL APPLICATION CIRCUIT
ON
OFF
1
6
EN1
OUT1
1μF
2
1μF
ON
OFF
3
5
OUTPUT1
INPUT
IN
GND
SGM2027
4
EN2
OUT2
1μF
OUTPUT2
SG Micro Corp
www.sg-micro.com
REV. A. 4
SGM2027
PACKAGE/ORDERING INFORMATION
ORDERING
NUMBER
SGM2027-BYTN6G/TR
SGM2027-PYTN6G/TR
SGM2027-VYTN6G/TR
SGM2027-WYTN6G/TR
SGM2027-YYTN6G/TR
SGM2027-AAYTN6G/TR
SGM2027-ACYTN6G/TR
SGM2027-ADYTN6G/TR
V
OUT1
3.0V
1.5V
1.8V
1.2V
1.8V
1.2V
2.8V
1.8V
V
OUT2
3.0V
2.8V
3.3V
2.8V
2.8V
1.8V
3.3V
3.0V
PIN-
PACKAGE
TSOT-23-6
TSOT-23-6
TSOT-23-6
TSOT-23-6
TSOT-23-6
TSOT-23-6
TSOT-23-6
TSOT-23-6
SPECIFIED
TEMPERATURE
RANGE
-40℃ to +85℃
-40℃ to +85℃
-40℃ to +85℃
-40℃ to +85℃
-40℃ to +85℃
-40℃ to +85℃
-40℃ to +85℃
-40℃ to +85℃
Dual, Low Dropout,
250mA LDO Regulator
PACKAGE
MARKING
S67XX
S35XX
S3BXX
S3CXX
S3EXX
S65XX
S43XX
S66XX
PACKAGE
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
NOTE: Order number and package marking are defined as the follow:
ORDER NUMBER
SGM2027- X X X G / TR
Tape and Reel
Green Product
Package Type
TN6
Y
TSOT-23-6
MARKING INFORMATION
SYY X X
Date code - Month ("A" = Jan. "B" = Feb.
…
"L" = Dec.)
Date code - Year ("9" = 2009, "A" = 2010
…)
Chip I.D.
For example: S359A (2009, January)
Operating Temperature Range
-40℃ to +85℃
Output Voltages
P : 1.5V (output1), 2.8V (output2)
V : 1.8V (output1), 3.3V (output2)
.
.
.
.
.
.
SG Micro Corp
www.sg-micro.com
2
SGM2027
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℃
TSOT-23-6 ......................................................................0.47W
Package Thermal Resistance
TSOT-23-6,
θ
JA
............................................................265℃/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
Dual, Low Dropout,
250mA LDO Regulator
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.
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.
SG Micro Corp
www.sg-micro.com
3
SGM2027
Dual, Low Dropout,
250mA LDO Regulator
PIN CONFIGURATION
(TOP VIEW)
SGM2027
SYYxx
TSOT-23-6
EN1
1
2
3
6
5
4
OUT1
IN
GND
EN2
OUT2
NOTE: The location of pin 1 on the SGM2027 is determined by orienting the package marking as shown.
PIN DESCRIPTION
PIN
NAME
FUNCTION
1
2
3
4
5
6
EN1
IN
EN2
OUT2
GND
OUT1
On/Off Control 1. A logic low reduces the supply current to 10nA. If EN1 and EN2
are both low, both regulators and the reference turn off.
Supply Input.
On/Off Control 2. A logic low reduces the supply current to 10nA. If EN1 and EN2
are both low, both regulators and the reference turn off.
Channel 2 Output Voltage.
Common Ground.
Channel 1 Output Voltage.
SG Micro Corp
www.sg-micro.com
4
SGM2027
Dual, Low Dropout,
250mA LDO Regulator
ELECTRICAL CHARACTERISTICS
(V
IN
= V
OUT (NOMINAL)
+ 0.5V or 2.5V (whichever is greater), T
A
= -40℃ to +85℃, typical values are at T
A
= + 25℃, for each LDO unless
otherwise specified.)
PARAMETER
Input Voltage
Output Voltage Accuracy
Maximum Output Current
Current Limit
Ground Pin Current
Dropout Voltage
Line Regulation
Load Regulation
Power Supply Rejection Rate
SHUTDOWN
EN Input Threshold
EN Input Bias Current
Shutdown Supply Current
Shutdown Exit Delay
(2)
(1)
(3)
SYMBOL
V
IN
CONDITIONS
I
OUT
= 0.1mA, T
A
= +25℃
MIN
2.5
-2
250
310
TYP
MAX
5.5
+2
UNITS
V
%
mA
mA
I
LIM
I
Q
EN = 2V, both LDOs No Load
I
OUT
= 1mA
I
OUT
= 250mA
V
OUT
V
IN
V
OUT
V
OUT
I
LOAD
V
OUT
500
190
1
250
0.02
0.00
4
71
350
0.15
0.01
295
μA
mV
%/V
%/mA
dB
V
IN
= 2.5V or (V
OUT
+ 0.5V) to 5.5V,
I
OUT
= 1mA
I
OUT
= 0.1mA to 250mA, C
OUT
= 1µF
I
LOAD
= 50mA, C
OUT
= 1µF, f = 100Hz
1.5
PSRR
V
IH
V
IL
I
B(SHDN)
I
Q(SHDN)
V
IN
= 2.5V to 5.5V
EN = 0V or EN = 5.5V
EN1 = EN2 = 0.4V
C
OUT
= 1µF, No Load
T
A
= +25℃
T
A
= +85℃
T
A
= +25℃
T
A
= +85℃
T
A
= +25℃
0.4
0.01
0.01
0.01
0.01
20
160
15
1
1
V
μA
μA
μs
℃
℃
THERMAL PROTECTION
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
T
SHDN
ΔT
SHDN
NOTES:
1. 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 3.3V)
2. Time needed for V
OUT
to reach 95% of final value.
3. Each channel provides 300mA of maximum output current when the condition of dissipating heat is good.
SG Micro Corp
www.sg-micro.com
5
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