SGM2014
GENERAL DESCRIPTION
Low Power, Low Dropout,
250mA, RF - Linear Regulators
FEATURES
-
Low Output Noise: 30µV
RMS
TYP(10Hz to 100kHz)
-
Ultra-Low Dropout Voltage:
-
-
-
-
-
-
-
-
The SGM2014 series low-power, low-noise, low-dropout,
CMOS linear voltage regulators operate from a 2.5V to
5.5V input and deliver up to 250mA. They are the
perfect choice for low voltage, low power applications.
An ultra low ground current（160µA at 250mA output )
makes these part attractive for battery operated power
systems. The SGM2014 series also offer ultra low
dropout voltage (250mV at 250mA output) to prolong
battery life in portable electronics. Systems requiring a
quiet voltage source, such as RF applications, will
benefit from the SGM2014 series’ ultra low output noise
(30µVRMS) and high PSRR. An external noise bypass
capacitor connected to the device’s BP pin can further
reduce the noise level.
The output voltage is preset to voltages in the range of
1.5V to 3.3V. Other features include a 10nA
logic-controlled shutdown mode, output current limit
and thermal shut- down protection.
Devices come in 5-pin SOT23 package.
250mV at 250mA Output
Low 85µA No-Load Supply Current
Low 160µA Operating Supply Current
at 250mA Output
High PSRR (73dB at 1kHz)
Quick Auto-Discharge in Shutdown Status
Thermal-Overload Protection
Output Current Limit
10nA Logic-Controlled Shutdown
Available in Multiple Output Voltage Versions
Fixed Outputs of 1.5V, 1.8V, 2.5V, 2.8V, 2.85V,
3.0V, 3.3V
PIN CONFIGURATION
（TOP
VIEW）
SGM2014
IN
1
2
5
OUT
APPLICATIONS
Cellular Telephones
Cordless Telephones
PHS Telephones
PCMCIA Cards
Modems
MP3 Player
Hand-Held Instruments
Palmtop Computers
Electronic Planners
Portable/Battery-Powered Equipment
GND
EN
3
SOT23-5
4
BP
SG Microelectronics Co, Ltd
Tel: 86/10/51798160/80
www.sg-micro.com
REV. A
ORDERING INFORMATION
MODEL
SGM2014-1.5
SGM2014-1.8
SGM2014-2.5
SGM2014-2.8
SGM2014-2.85
SGM2014-3.0
SGM2014-3.3
V
OUT
(V)
1.5V
1.8V
2.5V
2.8V
2.85V
3.0V
3.3V
PIN-
PACKAGE
SPECIFIED
TEMPERATURE
RANGE
ORDERING
NUMBER
SGM2014-1.5YN5/TR
SGM2014-1.8YN5/TR
SGM2014-2.5YN5/TR
SGM2014-2.8YN5/TR
SGM2014-2.85YN5/TR
SGM2014-3.0YN5/TR
SGM2014-3.3YN5/TR
PACKAGE
MARKING
YE15
YE18
YE25
YE28
YE2J
YE30
YE33
PACKAGE
OPTION
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
- 40°C to +85°C
- 40°C to +85°C
- 40°C to +85°C
- 40°C to +85°C
- 40°C to +85°C
- 40°C to +85°C
- 40°C to +85°C
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
ABSOLUTE MAXIMUM RATINGS
IN to GND.....................................................................- 0.3V to +6V
Output Short-Circuit Duration ...........................................Infinite
EN to GND...................................................................- 0.3V to +6V
OUT, BP to GND............................................- 0.3V to (V
IN
+ 0.3V)
Power Dissipation, P
D
@ T
A
= 25℃
SOT23-5 .....................................................................................0.4W
Package Thermal Resistance
SOT23-5,
θ
JA
....................................................................... 250
℃
/W
Operating Temperature Range...........................- 40°C to +85°C
Junction Temperature...........................................................+150°C
Storage Temperature.............................................- 65°C to +150°C
Lead Temperature (soldering, 10s).......................................260°C
ESD Susceptibility
HBM..........................................................................................4000V
MM..............................................................................................400V
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.
BLOCK DIAGRAM
2
SGM2014
ELECTRICAL CHARACTERISTICS
V
IN
= V
OUT (NOMINAL)
+ 1V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= + 25°C
PARAMETER
Input Voltage
SYMBOL
V
IN
I
OUT
= 0.1mA, T
A
= +25°C
Output Voltage Accuracy
I
OUT
= 0.1mA to 250mA
T
A
= -40°C to +85°C
Maximum Output Current
Current Limit
Ground Pin Current
I
LIM
I
Q
No load, EN =1.6V
I
OUT
= 250mA, EN = 1.6V
Dropout Voltage(Note1)
Line Regulation
Load Regulation
Output Voltage Noise
Power Supply Rejection Rate
SHUTDOWN
EN Input Threshold
EN Input Bias Current
Shutdown Supply Current
Shutdown Exit Delay(Note2)
THERMAL PROTECTION
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
T
SHDN
ΔT
SHDN
160
10
℃
℃
V
IH
V
IL
I
B(SHDN)
I
Q(SHDN)
V
IN
= 2.5V to 5.5V
EN = 0V and EN = 5.5V
EN = 0.4V
C
BP
= 0.01µF
C
OUT
= 1µF, No load
T
A
= +25°C
T
A
= +125°C
T
A
= +25°C
T
A
= +125°C
T
A
= +25°C
1.6
0.4
0.01
0.01
0.01
0.01
30
1
1
V
µA
µA
µs
ΔV
LNR
ΔV
LDR
I
OUT
= 1mA
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
f = 10Hz to 100kHz, C
BP
= 0.01µF,
C
OUT
= 10µF
C
BP
= 0.1µF, I
LOAD
= 50mA, f = 100Hz
C
OUT
= 1µF
f = 1kHz
250
260
450
85
160
1.2
250
0.015
0.001
30
76
73
400
0.15
0.003
mV
%/V
%/mA
µV
RMS
dB
dB
135
CONDITIONS
MIN
2.5
-2
TYP
MAX
5.5
2
2.6
%
UNITS
V
mA
mA
µA
e
n
PSRR
Specifications subject to change without notice.
Note 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
+ 1V. (Only
applicable for V
OUT
= +2.5V to +3.3V)
Note 2:
Time needed for V
OUT
to reach 95% of final value.
3
SGM2014
TYPICAL OPERATION CIRCUIT
INPUT
2.5V TO 5.5V
IN
C
IN
1μF
ON
OFF
OUT
OUTPUT
SGM
2014
EN
GND
BP
C
OUT
1μF
C
BP
0.01μF
PIN DESCRIPTION
PIN
1
2
3
4
5
NAME
IN
GND
EN
BP
OUT
FUNCTION
Regulator Input. Supply voltage can range from 2.5V to 5.5V. Bypass with a 1µF capacitor to GND.
Ground.
Shutdown Input. A logic low reduces the supply current to 10nA. Connect to IN for normal operation.
Reference-Noise Bypass. Bypass with a low-leakage 0.01µF ceramic capacitor for reduced noise at the output.
Regulator Output.
4
SGM2014
TYPICAL OPERATING CHARACTERISTICS
V
IN
= V
OUT(NOMINAL)
+ 1V or +2.5V (whichever is greater), C
IN
= 1µF, C
OUT
= 1µF, C
BP
= 0.01µF, T
A
= +25℃, unless otherwise noted.
Output Voltage vs.Load Current
2.7
V
OUT
= 2.5V
Output Voltage(V)
Output Voltage vs.Load Current
3.5
V
OUT
= 3.3V
Output Voltage(V)
3.4
2.6
2.5
3.3
2.4
3.2
2.3
0
50
100
150
Load Current(mA)
200
250
3.1
0
50
100
150
Load Current(mA)
200
250
Ground Pin Current vs.Load Current
200
190
180
170
160
150
140
130
120
110
100
90
80
70
0
200
Ground Pin Current vs.Input Voltage
V
OUT
= 3.3V
Ground Pin Current(µA)
160
120
80
40
0
No Load
Ground Pin Current(µA)
V
OUT
= 3.3V
V
OUT
= 2.5V
50
100
150
Load Current(mA)
200
250
0
1
2
3
4
Input Voltage(V)
5
6
Ground Pin Current vs.Input Voltage
200
V
OUT
= 2.5V
Ground Pin Current(µA)
160
120
80
40
0
0
1
2
3
4
Input Voltage(V)
5
6
No Load
Output Voltage(V)
5
4
3
2
1
0
0
6
Output Voltage vs.Input Voltage
No Load
V
OUT
= 3.3V
V
OUT
= 2.5V
1
2
3
4
Input Voltage(V)
5
6
5
SGM2014
嵌入式系统
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