SGM3110
Micro-Power Regulated Charge Pump
GENERAL DESCRIPTION
The SGM3110 is a Micro-Power switched capacitor
voltage converter that delivers a regulated output. No
external inductor is required for operation.
The SGM3110 can deliver up to 100mA to the voltage
regulated output. It features very low quiescent current
and high efficiency over a large portion of its load range,
making this device ideal for battery-powered
applications. Furthermore, the combination of few
external components and small package size keeps the
total converter board area
space-restricted applications.
to
a
minimum
in
FEATURES
●
Step-Up Voltage Converter
●
Input Voltage Range:
SGM3110-5.0: 2.7V to 5.0V
SGM3110-4.5: 2.7V to 4.5V
●
Micro-Power Consumption: 60µA
●
Fixed 5V, 4.5V ± 4% Output
●
Peak Current 250mA for 100ms
●
High Frequency 750kHz Operation
●
Logic-Controlled Shutdown
●
Short-Circuit/Over-Temperature Protection
●
Available in Green SOT-23-6 Package
The SGM3110 uses a pulse skipping technique to
provide a regulated output from a varying input supply.
The SGM3110 contains a thermal management circuit
to protect the device under continuous output
short-circuit conditions.
The SGM3110 is available in Green SOT-23-6 package
and is rated over the -40℃ to +85℃ temperature
range.
APPLICATIONS
Cellular Phones
Digital Cameras
Handheld Electronics
LED/Display Backlight Driver
LEDs for Camera Flash
Portable Communication Devices
MP3 Players
GPS Receivers
PDAs
TYPICAL APPLICATION
V
OUT
C
OUT
= 10μF
V
OUT
GND
ON/OFF
SHDN
C+
V
IN
C-
1μF
V
IN
C
IN
= 10μF
SG Micro Corp
www.sg-micro.com
REV. A. 2
SGM3110
Micro-Power Regulated Charge Pump
PACKAGE/ORDERING INFORMATION
ORDER NUMBER
SGM3110-5.0YN6/TR
SGM3110-4.5YN6/TR
PACKAGE
DESCRIPTION
SOT-23-6
SOT-23-6
PACKAGE
OPTION
Tape and Reel, 3000
Tape and Reel, 3000
MARKING
INFORMATION
3110
3110A
ABSOLUTE MAXIMUM RATINGS
V
IN
to GND ................................................................-0.3V to 6V
V
OUT
to GND .............................................................-0.3V to 6V
SHDN to GND...........................................................-0.3V to 6V
Storage Temperature Range........................... -65℃ to +150℃
Junction Temperature.......................................................160℃
Operating Temperature Range ......................... -40℃ to +85℃
Power Dissipation, P
D
@ T
A
= 25℃
SOT-23-6 .........................................................................0.34W
Package Thermal Resistance
SOT-23-6,
θ
JA
.............................................................250℃/W
Lead Temperature (Soldering 10 sec)
........................................................................................ 260℃
ESD Susceptibility
HBM................................................................................2000V
MM....................................................................................400V
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 last 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
2
SGM3110
PIN CONFIGURATION
(TOP VIEW)
Micro-Power Regulated Charge Pump
SGM3110
3110(A)
SOT-23-6
V
OUT
1
6
C+
GND
2
5
V
IN
SHDN
3
4
C-
PIN DESCRIPTION
NAME
V
OUT
GND
SHDN
FUNCTION
Regulated output pin.
Ground
Shutdown input. Logic low signal disables the converter.
Flying capacitor negative terminal.
Input supply pin.
Flying capacitor positive terminal.
C-
V
IN
C+
SG Micro Corp
www.sg-micro.com
3
SGM3110
Micro-Power Regulated Charge Pump
ELECTRICAL CHARACTERISTICS
(T
A
= -40℃ to +85℃, unless otherwise noted. Typical values are at T
A
= 25℃, C
FLY
= 1µF, C
IN
= 10µF, C
OUT
= 10µF).
PARAMETER
SGM3110-5.0
Input Voltage Range
Output Voltage
Quiescent Power Supply Current
Shutdown Supply Current
Ripple Voltage
Efficiency
Frequency
SHDN
Input Threshold High
SYMBOL
V
IN
V
OUT
I
Q
I
SHDN
V
RIPPLE
η
f
OSC
V
IH
V
IL
I
IH
I
IL
T
ON
V
IN
V
OUT
I
Q
I
SHDN
V
RIPPLE
η
f
OSC
V
IH
V
IL
I
IH
I
IL
T
ON
SHDN
= V
IN
CONDITIONS
V
OUT
= 5.0V
2.7V < V
IN
< 5V, I
OUT
≤
50mA
3.0V < V
IN
< 5V, I
OUT
≤
100mA
2.7V < V
IN
< 5V, I
OUT
= 0mA,
SHDN
= V
IN
2.7V < V
IN
< 3.6V, I
OUT
= 0mA, V
SHDN
= 0
3.6V < V
IN
< 5V, I
OUT
= 0mA, V
SHDN
= 0
V
IN
= 2.7V, I
OUT
= 50mA
V
IN
= 3V, I
OUT
= 100mA
V
IN
= 2.7V, I
OUT
= 50mA
Oscillator Free Running
MIN
2.7
4.8
4.8
TYP
MAX
V
OUT
UNITS
V
V
μA
μA
mV
P-P
%
kHz
5.0
5.0
60
0.2
15
88
91
750
5.2
5.2
68
1
1
1.4
0.4
SHDN
= V
IN
SHDN
= GND
SHDN
Input Threshold Low
SHDN
Input High Current
SHDN
Input Low Current
V
μA
μA
ms
-1
-1
0.3
2.7
4.32
4.32
4.5
4.5
60
0.2
15
88
83
750
1.4
+1
+1
Turn-On Time
SGM3110-4.5
Input Voltage Range
Output Voltage
Quiescent Power Supply Current
Shutdown Supply Current
Ripple Voltage
Efficiency
Frequency
SHDN
Input Threshold High
SHDN
Input Threshold Low
SHDN
Input High Current
V
IN
= 3V, I
OUT
= 0mA
V
OUT
= 4.5V
2.7V < V
IN
< 4.5V, I
OUT
≤
50mA
3.0V < V
IN
< 4.5V, I
OUT
≤
100mA
2.7V < V
IN
< 4.5V, I
OUT
= 0mA,
SHDN
= V
IN
2.7V < V
IN
< 3.6V, I
OUT
= 0mA, V
SHDN
= 0
3.6V < V
IN
< 4.5V, I
OUT
= 0mA, V
SHDN
= 0
V
IN
= 2.7V, I
OUT
= 50mA
V
IN
= 3V, I
OUT
= 100mA
V
IN
= 2.7V, I
OUT
= 50mA
Oscillator Free Running
V
OUT
4.68
4.68
68
1
1
V
V
μA
μA
mV
P-P
%
kHz
0.4
-1
-1
0.3
+1
+1
SHDN
= GND
V
μA
μA
ms
SHDN
Input Low Current
Turn-On Time
V
IN
= 3V, I
OUT
= 0mA
SG Micro Corp
www.sg-micro.com
4
SGM3110
Micro-Power Regulated Charge Pump
TYPICAL PERFORMANCE CHARACTERISTICS
At V
S
= +5.0V, T
A
= +25℃, V
IN
= 3V, C
IN
= C
OUT
= 10μF, C
FLY
= 1μF, unless otherwise noted.
Startup Time with 50mA Load
Startup Time with 100mA Load
V
OUT
(1Vdiv/)
V
OUT
(1Vdiv/)
SHDN (1V/div)
SHDN(1V/div)
Time (100μs/div)
Time (100μs/div)
Output Ripple with I
OUT
= 50mA
Output Ripple with I
OUT
= 100mA
V
OUT
AC Coupled(10mV/div)
V
IN
= 2.7V
V
OUT
AC Coupled(50mV/div)
V
IN
= 3.0V
Time (0.5μs/div)
Time (2μs/div)
Load Transient Response for 50mA
Load Transient Response for 100mA
V
IN
= 3.0V
I
OUT
0mA
to 50mA
(20mA/div)
V
IN
= 2.7V
I
OUT
0mA
to 100mA
(50mA/div)
V
OUT
AC
Coupled
(50mV/div)
Time (50μs/div)
V
OUT
AC
Coupled
(80mV/div)
Time (50μs/div)
SG Micro Corp
www.sg-micro.com
5
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