SGM2032
Low Power, Low Dropout,
RF Linear Regulators
GENERAL DESCRIPTION
The SGM2032 series low-power, low-noise, low-dropout,
CMOS linear voltage regulators operate from a 2.5V to
5.5V input voltage. 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 SGM2032 series also offer low dropout
voltage to prolong battery life in portable electronics.
Systems requiring a quiet voltage source, such as RF
applications, will benefit from the SGM2032 series’ ultra
low output noise 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
0.9V
to
5.0V.
Other
features
include
a
10nA
logic-controlled shutdown mode, output current limit and
thermal shutdown protection.
The SGM2032 is available in Green SOT-23-5 and
SC70-5
packages.
It
operates
over
an
ambient
temperature range of -40℃ to +85℃.
FEATURES
Low Output Noise
Low Dropout Voltage
Thermal-Overload Protection
Output Current Limit
High PSRR (75dB at 1kHz)
10nA Logic-Controlled Shutdown
Adjustable Output from 0.8V to 5.0V
Available Fixed Output Voltages: 0.9V, 1.3V, 2.1V,
2.7V, 2.9V, 3.1V, 3.2V, 3.6V, 4.2V and 5.0V
-40℃ to +85℃ Operating Temperature Range
Available in Green SC70-5 and SOT-23-5 Packages
APPLICATIONS
Cellular Telephones
Cordless Telephones
PCMCIA Cards
Modems
MP3 Player
Hand-Held Instruments
Palmtop Computers
Electronic Planners
Portable/Battery-Powered Equipment
SG Micro Corp
www.sg-micro.com
REV. A
SGM2032
PIN CONFIGURATIONS
(TOP VIEW)
SGM2032
IN
1
2
5
OUT
Low Power, Low Dropout,
RF Linear Regulators
ABSOLUTE MAXIMUM RATINGS
IN to GND................................................................. -0.3V to 6V
Output Short-Circuit Duration ...........................................Infinite
EN to GND................................................................ -0.3V to V
IN
OUT, BP/FB to GND................................... -0.3V to (V
IN
+ 0.3V)
Power Dissipation, P
D
@ T
A
= 25℃
SOT-23-5........................................................................... 0.4W
SC70-5 ...............................................................................0.3W
Package Thermal Resistance
SOT-23-5,
θ
JA
............................................................... 260℃/W
SC70-5,
θ
JA
....................................................................330℃/W
SOT-23-5/SC70-5
GND
EN
3
4
BP/FB
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.
NOTE: Orientation of top mark determines pin1 location. Read
the top product code mark left to right, pin1 is the lower left pin.
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.
PIN DESCRIPTION
PIN
1
2
3
4
FB
5
OUT
NAME
IN
GND
EN
BP
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 (fixed voltage version only). Bypass with a low-leakage
0.01μF ceramic capacitor for reduced noise at the output.
Feedback Pin (adjustable voltage version only). This is used to set the output voltage
of the device.
Regulator Output.
SG Micro Corp
www.sg-micro.com
3
SGM2032
Low Power, Low Dropout,
RF Linear Regulators
ELECTRICAL CHARACTERISTICS
(V
IN
= V
OUT (NOMINAL)
+ 0.5V or 2.5V, whichever is greater, Full = -40℃ to +85℃, unless otherwise noted.)
PARAMETER
Input Voltage
Output Voltage Accuracy
SYMBOL
V
IN
I
OUT
= 0.1mA
SOT-23-5
Maximum Output Current
V
OUT
< 1V, SC70-5
1V
≤
V
OUT
≤
2V, SC70-5
V
OUT
> 2V, SC70-5
Current Limit
Ground Pin Current
Dropout Voltage
Line Regulation
Load Regulation
(1)
CONDITIONS
TEMP
+25℃
+25℃
MIN
2.5
-2
300
120
150
250
310
TYP
MAX
5.5
+2
UNITS
V
%
+25℃
mA
I
LIM
I
Q
No load, EN = 2V
I
OUT
= 1mA
ΔV
LNR
ΔV
LDR
I
OUT
= 300mA
V
IN
= 2.5V or (V
OUT
+ 0.5V) to 5.5V,
I
OUT
= 1mA
I
OUT
= 0.1mA to 300mA, C
OUT
= 1µF,
V
OUT
> 2V
I
OUT
= 0.1mA to 300mA, C
OUT
= 1µF,
V
OUT
≤
2V
f = 10Hz to 100kHz, C
BP
= 0.01µF,
C
OUT
= 10µF, Fixed Output of 0.9V
C
BP
= 0.1μF, I
LOAD
= 50mA, f = 217Hz
C
OUT
= 1μF, Fixed Output
f = 1kHz
of 0.9V
+25℃
+25℃
+25℃
+25℃
+25℃
500
120
0.9
270
0.02
0.002
0.004
400
0.05
0.005
220
mA
µA
mV
%/V
%/mA
0.008
µV
RMS
dB
dB
Output Voltage Noise
Power Supply Rejection Ratio
SHUTDOWN
(2)
e
n
PSRR
+25℃
+25℃
+25℃
Full
Full
+25℃
+25℃
+25℃
1.5
30
80
75
EN Input Threshold
EN Input Bias Current
Shutdown Supply Current
Shutdown Exit Delay
(3)
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 = 0.3V
C
OUT
= 1μF, No Load
0.3
0.01
0.01
30
1
1
V
μA
μA
μs
℃
℃
THERMAL PROTECTION
Thermal Shutdown
Temperature
Thermal Shutdown
Hysteresis
T
SHDN
ΔT
SHDN
150
15
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 +5.0V).
2. V
EN
= -0.3V to V
IN
3. Time needed for V
OUT
to reach 90% of final value.
SG Micro Corp
www.sg-micro.com
4
PCB设计
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