Preliminary Data sheet
SGM3110
GENERAL DESCRIPTION
The SGM3110 is a MicroPower 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 to a minimum in
space-restricted applications.
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 has lead (Pb) free SOT23-6 package and is
rated over the -40°C to +85°C temperature range.
MicroPower
Regulated Charge Pump
FEATURES
−
Step-Up Voltage Converter
−
Input Voltage Range:
SGM3110-5.0: 2.7 to 5.0V
SGM3110-4.5: 2.7 to 4.5V
−
MicroPower 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
−
Lead (Pb) Free
SOT23-6 Package
APPLICATIONS
Cellular Phones
Digital Cameras
Handheld Electronics
LED/Display Backlight Driver
LEDs for Camera Flash
Portable Communication Devices
MP3 Players
GPS Receivers
PDAs
PIN CONFIGURATIONS（TOP VIEW）
SGM3110
3110(A)
SOT23-6
V
OUT
GND
1
2
6
5
C+
V
IN
SHDN
3
4
C-
TYPICAL APPLICATION
V
OUT
C
OUT
= 10µF
V
OUT
GND
ON/OFF
SHDN
C+
V
IN
C-
1µF
V
IN
C
IN
= 10µF
Shengbang Microelectronics Co, Ltd
Tel: 86/451/84348461
www.sg-micro.com
Apr. 2007
ELECTRICAL CHARACTERISTICS
(T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= 25°C, 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
V
IN
V
OUT
I
Q
I
SHDN
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
1.4
0.4
15
88
91
750
%
kHz
V
+1
+1
0.3
2.7
4.32
4.32
4.5
4.5
60
0.2
15
88
83
750
1.4
0.4
%
kHz
V
+1
+1
0.3
µA
µA
ms
V
OUT
4.68
4.68
68
1
1
µA
µA
ms
V
V
µA
µA
mV
P-P
2.7
4.8
4.8
5.0
5.0
60
0.2
V
OUT
5.2
5.2
68
1
1
V
V
µA
µA
mV
P-P
SYMBOL
CONDITIONS
MIN
TYP
(1)
MAX UNITS
Ripple Voltage
Efficiency
Frequency
V
RIPPLE
η
f
OSC
V
IH
V
IL
I
IH
I
IL
T
ON
V
IN
V
OUT
I
Q
I
SHDN
SHDN
Input Threshold High
SHDN
Input Threshold Low
SHDN
Input High Current
SHDN
Input Low Current
Turn-On Time
SGM3110-4.5
Input Voltage Range
Output Voltage
Quiescent Power Supply Current
Shutdown Supply Current
SHDN
= V
IN
SHDN
= GND
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
-1
-1
Ripple Voltage
Efficiency
Frequency
V
RIPPLE
η
f
OSC
V
IH
V
IL
I
IH
I
IL
T
ON
SHDN
Input Threshold High
SHDN
Input Threshold Low
SHDN
Input High Current
SHDN
Input Low Current
Turn-On Time
SHDN
= V
IN
SHDN
= GND
V
IN
= 3V, I
OUT
= 0mA
-1
-1
Specifications subject to change without notice.
2
SGM3110
PACKAGE/ORDERING INFORMATION
ORDER NUMBER
PACKAGE
DESCRIPTION
PACKAGE
OPTION
MARKING
INFORMATION
SGM3110-5.0YN6/TR
SGM3110-4.5YN6/TR
SOT23-6
SOT23-6
Tape and Reel, 3000
Tape and Reel, 3000
3110
3110A
ABSOLUTE MAXIMUM RATINGS
V
IN
to GND ..................................................-0.3V to 6 V
V
OUT
to GND ...............................................-0.3V to 6 V
SHDN to GND ............................................-0.3V to 6 V
Storage Temperature Range.............. –65℃ to +150℃
Junction Temperature ...........................................160℃
Operating Temperature Range ........ –40℃ to +85℃
Power Dissipation, P
D
@ T
A
= 25℃
SOT23-6 .................................................................0.34W
Package Thermal Resistance
SOT23-6,
θ
JA
..................................................... 250
℃
/W
Lead Temperature Range (Soldering 10 sec)
................................................. 260℃
ESD Susceptibility
HBM........................................................................2000V
MM............................................................................400V
NOTES
1. Stresses above those listed under Absolute Maximum
Ratings may cause permanent damage to the device. This
is a stress rating only; functional operation of the device at
these or any other conditions above those indicated in the
operational section of this specification is not implied.
Exposure to absolute maximum rating conditions for
extended periods may affect device reliability.
CAUTION
This integrated circuit can be damaged by ESD.
Shengbang Micro-electronics 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.
PIN DESCRIPTION
NAME
V
OUT
GND
FUNCTION
Regulated output pin.
Ground
SHDN
C-
V
IN
C+
Shutdown input. Logic low signal disables the converter.
Flying capacitor negative terminal.
Input supply pin.
Flying capacitor positive terminal.
3
SGM3110
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
I
OUT
0mA
to 50mA
(20mA/div)
V
IN
= 2.7V
Load Transient Response for 100mA
V
IN
= 3.0V
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)
4
SGM3110
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.
70
60
Supply Current vs. V
SHDN
70
66
Supply Current vs. Supply Voltage
I
OUT
= 0µA
C
FLY
= 1µF
V
SHDN
= V
IN
Supply Current (µA)
50
40
30
20
10
0
0
1
V
IN
= 2.8V
V
IN
= 3.3V
V
IN
= 5.5V
Supply Current (µA)
62
58
54
50
I
OUT
= 0µA
2
3
4
5
V
SHDN
Control Voltage(V)
2.5
3
3.5
4
4.5
5
5.5
Supply Voltage(V)
5.2
5.15
Output Voltage vs. Output Current
V
IN
= 3.6V
1
0.9
V
SHDN
Threshold vs. Input Voltage
V
SHDN
Threshold (V)
Output Voltage (V)
5.1
5.05
5
4.95
4.9
4.85
4.8
0
20
V
IH
0.8
0.7
0.6
0.5
V
IN
= 3.3V
V
IN
= 2.7V
V
IN
= 3.0V
V
IL
Output Current (mA)
40
60
80
100
120
2
2.5
3
3.5
4
4.5
5
5.5
Input Voltage (V)
V
SHDN
Input Threshold (high) vs. Input Voltage
1
V
SHDN
Input Threshold (low) vs. Input Voltage
1
V
SHDN
Input Threshold (high)(V)
V
SHDN
Input Threshold (low)(V)
-40℃
0.9
0.9
0.8
0.7
0.6
0.5
-40℃
25℃
85℃
25℃
0.8
85℃
0.7
0.6
0.5
2
2.5
3
3.5
4
4.5
5
5.5
2
2.5
3
3.5
4
4.5
5
5.5
Input Voltage (V)
Input Voltage (V)
5
SGM3110
单片机
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