SGM2058 [SGMICRO]
Negative Charge Pump and Adjustable Regulator;
| 型号： | SGM2058 |
| 厂家： | 
Shengbang Microelectronics Co, Ltd |
| 描述： | Negative Charge Pump and Adjustable Regulator |
| 文件： | 总12页 (文件大小：1075K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SGM2058
Negative Charge Pump
and Adjustable Regulator
GENERAL DESCRIPTION
FEATURES
The SGM2058 is a negative output charge pump which
has an inside adjustable regulator. The input voltage
range is from 2.3V to 5.5V and the unregulated output
equals to -VIN. For the regulated output of the SGM2058,
it equals to -VCTL and the range is from 0V to -VIN.
● Input Voltage Range: 2.3V to 5.5V
● Dual Outputs:
VOUT1: -VIN
(Unregulated Negative Charge Pump Output)
VOUT2: -VCTL between 0V and -VIN
(Regulated Output)
The inrush current of the SGM2058 can be decreased
by the internal soft-start circuit. For application case,
four ceramic capacitors and no inductor are required,
and it can be used for supplying optical modules, bias
of RF amplifiers and sensors.
● Output Current Limit: 265mA (TYP)
● Stable with Small Case Size Ceramic Capacitors
● Thermal Shutdown Protection
● No Inrush Current during Start-Up
● -40℃ to +125℃ Operating Temperature Range
● Available in a Green TQFN-1.8×1.4-10L Package
The SGM2058 is available in a Green TQFN-1.8×1.4-10L
package. It operates over an operating temperature
range of -40℃ to +125℃.
APPLICATIONS
Optical Applications
Biasing of the Amplifier for RF
Supplying Sensors in Portable Devices
TYPICAL APPLICATION
7
10
3.3V
IN
OUT1
-3.3V
CIN
COUT1
4.7μF
4.7μF
SGM2058
3
2
9
CTL
EN
CP
0V to -3.3V
Equal to Negative
CTL Voltage
5
CFLY
4.7μF
OUT2
COUT2
4.7μF
CN
8
GND
1, 6
Figure 1. Typical Application Circuit
SG Micro Corp
MARCH 2023 – REV. A. 1
www.sg-micro.com
Negative Charge Pump
SGM2058
and Adjustable Regulator
PACKAGE/ORDERING INFORMATION
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
DESCRIPTION
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
MODEL
S3I
XXX
SGM2058
TQFN-1.8×1.4-10L
SGM2058XWQ10G/TR
Tape and Reel, 3000
-40℃ to +125℃
MARKING INFORMATION
NOTE: XXX = Date Code and Trace Code.
Serial Number
Y Y Y
X X X
Trace Code
Date Code - Year
Green (RoHS & HSF): SG Micro Corp defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If
you have additional comments or questions, please contact your SGMICRO representative directly.
OVERSTRESS CAUTION
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed in Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to
absolute maximum rating conditions for extended periods
may affect reliability. Functional operation of the device at any
conditions beyond those indicated in the Recommended
Operating Conditions section is not implied.
IN to GND ............................................................ -0.3V to 6V
CP to GND............................................. -0.3V to (VIN + 0.3V)
CN, OUT2 to GND............................... (VOUT1 - 0.3V) to 0.3V
OUT1 to GND ...................................................... -6V to 0.3V
All Other Pins to GND.......................................... -0.3V to 6V
Package Thermal Resistance
TQFN-1.8×1.4-10L, θJA ............................................. 166℃/W
Junction Temperature.................................................+150℃
Storage Temperature Range.......................-65℃ to +150℃
Lead Temperature (Soldering, 10s)............................+260℃
ESD Susceptibility
ESD SENSITIVITY CAUTION
This integrated circuit can be damaged if ESD protections are
not considered carefully. SGMICRO recommends that all
integrated circuits be handled with appropriate precautions.
Failureto observe proper handlingand installation procedures
can cause damage. ESD damage can range from subtle
performance degradation tocomplete device failure. Precision
integrated circuits may be more susceptible to damage
because even small parametric changes could cause the
device not to meet the published specifications.
HBM.............................................................................4000V
CDM ............................................................................1000V
RECOMMENDED OPERATING CONDITIONS
Supply Voltage Range ........................................2.3V to 5.5V
Input Effective Capacitance, CIN .........................1μF to 10μF
Fly Effective Capacitance, CFLY...........................4.7μF (TYP)
OUT1 Effective Capacitance, COUT1....................... 1μF (MIN)
OUT2 Effective Capacitance, COUT2....................1μF to 10μF
Operating Junction Temperature Range......-40℃ to +125℃
DISCLAIMER
SG Micro Corp reserves the right to make any change in
circuit design, or specifications without prior notice.
SG Micro Corp
www.sg-micro.com
MARCH 2023
2
Negative Charge Pump
SGM2058
and Adjustable Regulator
PIN CONFIGURATION
(TOP VIEW)
OUT1 GND
6
7
5
4
3
OUT2
NC
CN
CP
8
9
CTL
IN 10
1
2
GND
EN
TQFN-1.8×1.4-10L
PIN DESCRIPTION
●
PIN
NAME
FUNCTION
1, 6
GND
Ground.
Enable Pin. Drive EN high to turn on the device. Drive EN low to turn off the device. The EN pin
has an internal pull-down resistance to ensure that the device is turned off when the EN pin is
floating.
2
EN
3
4
CTL
NC
Analog Input Voltage Pin. VOUT2 = -VCTL.
Recommend connecting this pin to GND.
Regulator Output Pin. It is recommended to use an output capacitor (COUT2) with effective
capacitance in the range of 1μF to 10μF.
5
OUT2
OUT1
CN
Negative Charge Pump Output Pin. It is recommended to use an output capacitor (COUT1) with
effective capacitance in the range of 1μF to 10μF.
7
8
Negative Connection for the Charge Pump Flying Capacitor.
9
CP
Positive Connection for the Charge Pump Flying Capacitor.
10
IN
Input Voltage Supply Pin. Decoupling capacitor should be added for this power supply.
SG Micro Corp
www.sg-micro.com
MARCH 2023
3
Negative Charge Pump
SGM2058
and Adjustable Regulator
ELECTRICAL CHARACTERISTICS
(VIN = 3.3V, CIN = CFLY = COUT1 = COUT2 = 4.7μF, TJ = -40℃ to +125℃, typical values are at TJ = +25℃, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
5.5
2.3
120
1
UNITS
Input Voltage Range
VIN
2.3
V
Input Under-Voltage Lockout Threshold
UVLO Threshold Hysteresis
Shutdown Current
VIN_UVLO
VIN_HYS
ISHDN
VIN rising
VEN = 0V
2.2
90
V
60
mV
μA
0.1
TJ = +25℃
170
170
0.28
210
230
V
EN = 2V, force VOUT1
Quiescent Current
IQ
μA
Ω
= -3.4V, no switching
TJ = -40℃ to +125℃
Charge Pump MOSFET On-Resistance
Negative Linear Regulator
Output Current Limit
RON
ILIMIT
VIN = 3.3V, VOUT2 = -2.5V
TJ = +25℃
265
360
-2.482
-2.47
22
mA
V
-2.532
-2.507
-2.507
V
CTL = 2.5V,
Output Voltage
IOUT2 = 10mA
TJ = -40℃ to +125℃ -2.544
Output Offset Voltage
Dropout Voltage
IOUT2 = 10mA
-22
mV
mV
%/mA
dB
VIN = 2.5V, IOUT2 = 60mA
VIN = 3.3V, IOUT2 = 60mA
VOUT1 = -3.3V, VCTL = 1V, IOUT2 = 0 to 150mA
f = 100Hz
15
5
66
VDROP
ΔVOUT
PSRR
58
Load Regulation
0.004
70
0.015
C
OUT1 = 1μF, COUT2 = 1μF,
Power Supply Rejection Ratio
IOUT2 = 10mA
f = 50kHz
30
Soft-Start Slew Rate
EN Turn-On Delay
10
V/ms
80
255
0.4
μs
VIL
VIH
Logic low
EN Input Threshold
V
Ω
Logic high
1.2
RDIS1
RDIS2
VEN = 0V, OUT1 rail
VEN = 0V, OUT2 rail
VEN = 2V
130
125
1.8
0
Output Discharge Resistance
EN Input Current
1.2
2.4
IEN
μA
VEN = 0V
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
System Level
TSHDN
160
20
℃
℃
ΔTSHDN
OUT1 Pin Voltage
-1×
7
VIN
VIN = 3.3V, VOUT1 = -3.3V, CFLY = COUT1 = 4.7μF,
IOUT1 = 60mA
VIN = 3.3V, VOUT2 = 2.5V, COUT2 = 1μF,
IOUT2 = 60mA
VIN = 3.3V, VOUT2 = 2.5V, COUT2 = 4.7μF,
IOUT2 = 60mA
VRIPPLE_OUT1
VRIPPLE_OUT2
VRIPPLE_OUT2
Output Ripple
2
2
mV
SG Micro Corp
www.sg-micro.com
MARCH 2023
4
Negative Charge Pump
SGM2058
and Adjustable Regulator
TYPICAL PERFORMANCE CHARACTERISTICS
TJ = +25℃, VIN = 3.3V, VOUT1 = -3.3V, VOUT2 = -1V, CIN = CFLY = COUT1 = COUT2 = 4.7μF, unless otherwise noted.
EN Turn-On
EN Turn-Off
VOUT2
VOUT2
VEN
VEN
VCP
VCP
VCTL
VCTL
IOUT2 = 20mA
IOUT2 = 20mA
Time (1ms/div)
VIN Turn-On
Time (10ms/div)
VIN Turn-Off
VOUT2
VOUT2
VIN
VIN
VCP
VCP
VCTL
VCTL
IOUT2 = 20mA
IOUT2 = 20mA
Time (2ms/div)
Steady State
Time (10ms/div)
Steady State
AC Coupled
AC Coupled
AC Coupled
AC Coupled
VOUT2
VOUT2
VOUT1
VOUT1
VCP
VCP
VCTL
VCTL
IOUT1 = 0mA, IOUT2 = 0mA
IOUT1 = 0mA, IOUT2 = 20mA
Time (20μs/div)
Time (1μs/div)
SG Micro Corp
MARCH 2023
www.sg-micro.com
5
Negative Charge Pump
SGM2058
and Adjustable Regulator
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
TJ = +25℃, VIN = 3.3V, VOUT1 = -3.3V, VOUT2 = -1V, CIN = CFLY = COUT1 = COUT2 = 4.7μF, unless otherwise noted.
Steady State
Load Capability
-2.1
-2.2
-2.3
-2.4
-2.5
-2.6
-2.7
— CFLY = 1μF
— CFLY = 4.7μF
AC Coupled
AC Coupled
VOUT2
VOUT1
VCP
VCTL
IOUT1 = 0mA, IOUT2 = 60mA
VCTL = 2.5V
200 250 300
0
50
100
150
Time (1μs/div)
OUT2 Output Current (mA)
OUT2 Dropout Voltage vs. Temperature
OUT2 Voltage vs. Temperature
50
45
40
35
30
25
20
-2.502
-2.504
-2.506
-2.508
-2.51
VCTL = 2.5V, IOUT2 = 10mA
20 35 50 65 80 95 110 125
Temperature (℃)
VCTL = 3.3V, IOUT2 = 60mA
-2.512
-40 -25 -10
5
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (℃)
OUT2 Current Limit vs. Temperature
Negative Linear Regulator Load Regulation
2
1.5
1
275
270
265
260
255
250
0.5
0
-0.5
-1
VCTL = 2.5V
-40 -25 -10
5
20 35 50 65 80 95 110 125
0
50
100
150
200
250
300
OUT2 Output Current (mA)
Temperature (℃)
SG Micro Corp
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MARCH 2023
6
Negative Charge Pump
SGM2058
and Adjustable Regulator
FUNCTIONAL BLOCK DIAGRAM
EN
Bias
Protection
LDO
RPULL
RDIS2
0V to -3.3V
OUT2
Equal to
Negative
CTL
CTL
IN
Charge Pump
3.3V
K11
K22
CP
CN
OUT1
-3.3V
K21
RDIS1
K12
SGM2058
GND
Figure 2. Functional Block Diagram
SG Micro Corp
www.sg-micro.com
MARCH 2023
7
Negative Charge Pump
SGM2058
and Adjustable Regulator
APPLICATION INFORMATION
The SGM2058 is a negative output charge pump which
has an inside adjustable regulator. The input voltage
range is from 2.3V to 5.5V and the unregulated output
equals to -VIN. For the regulated output of the SGM2058,
it equals to -VCTL and the range is from 0V to -VIN.
DAC Input
SGM2058
Output
OUT2
CTL
The inrush current of the SGM2058 can be decreased
by the internal soft-start circuit.
Figure 3. Output Voltage Setting
Enable Operation
Negative Charge Pump
The SGM2058 uses the EN pin to enable/disable the
device and to deactivate/activate the output automatic
discharge function.
The technology of getting -VIN (unregulated output) is
by using the switched capacitors. Use an integrated
oscillator to create a switching signal for driving the
charge pump. The switching frequency of the oscillator
is from 80kHz to 1875kHz (TYP). Also, the switching
frequency can be changed with the dropout voltage
between VIN and VOUT1. When heavy load occurs, this
frequency will increase to compensate the output
ripple.
When the EN pin voltage is lower than 0.4V, the device
is in shutdown state. There is no current flowing from IN
to OUT pins. In this state, the automatic discharge
transistor is active to discharge the output voltage
through RDIS1 (typically 130Ω) and RDIS2 (typically 125Ω).
When the EN pin voltage is higher than 1.2V, the device
is in active state. The output voltage is regulated to the
expected value and the automatic discharge transistor
is turned off.
The SGM2058 will assume that there is an over-current
condition if VOUT1 < VIN/2, so that the switching
frequency of oscillator will be forced at 80kHz for
fold-back.
Equivalent Output Resistance
Negative Linear Regulator
The charge pump frequency and fly capacitor
determine the output resistance of the SGM2058 as
shown in the following equation:
The negative linear regulator VOUT2 is integrated with
the charge pump which powers it. For the properties of
the internal regulator, the dropout voltage, quiescent
supply and the output noise are extremely low. Also,
1
(1)
RO
=
+ 8 × RON
f × CFLY
the range is from 0V to VOUT1
.
where:
VOUT2 is controlled by the feedback loop of the linear
regulator and the relationship between VCTL and VOUT2
is VCTL = -VOUT2. Also, the regulator provides a
convenient interface for DAC, and the output of the
SGM2058 can be driven by the input of DAC directly.
RON is the on-resistance of each charge pump
MOSFET.
The output current (IO) and resistance (RO) determine
the charge pump output VOUT1 as shown in the following
equation:
The output ripple of the negative linear regulator is
extremely low because of the special design of Power
Supply Rejection Ratio for its charge pump.
VOUT1 = - (VIN - IO × RO)
(2)
Soft-Start
Output Voltage Setting
Soft-start circuitry is integrated into the IC, which
supplies the controlled slew rate for the output voltage
of the linear regulator to prevent the SGM2058 from
overshoot at the instant of start-up. The typical ramp-up
time is within 500μs (TYP). For the typically value of
slew-rate, it can reach 10V/ms (TYP).
The absolute output voltage of the internal regulator is
equal to VCTL, which means that VOUT2 = -VCTL. The
analog input pin (CTL) can be connected directly to the
output of DAC. The application circuit is shown as
below:
SG Micro Corp
www.sg-micro.com
MARCH 2023
8
Negative Charge Pump
SGM2058
and Adjustable Regulator
APPLICATION INFORMATION (continued)
capacitor than normal to handle this situation. For
application, the CFLY should be closed to both CIN and
Load Capability
The summation of IOUT1 and IOUT2 should be less than
265mA (TYP) because of the limitation of the load
capability. Also, the changes of load capability are
associated with output and fly capacitors. If the
selected capacitors are smaller, the load capability will
be decreased.
C
OUT1, and it is a good choice to set the capacitance of
these three capacitors equally.
Thermal Shutdown Protection
The SGM2058 can detect the temperature of die. When
the die temperature exceeds the threshold value of
thermal shutdown, the SGM2058 will be in shutdown
state and it will remain in this state until the die
temperature decreases to +140℃ (TYP).
Input Capacitor Selection (CIN)
The input decoupling capacitor is necessary to be
connected as close as possible to the IN pin. A 1μF to
10μF dielectric X7R or X5R ceramic capacitor is
selected to get good dynamic performance.
Under-Voltage Lockout (UVLO)
The UVLO circuit monitors the input voltage to prevent
the device from turning on before VIN rises above the
VUVLO threshold. The UVLO circuit responds quickly to
glitches on the IN pin and attempts to disable the output
of the device if either of these rails collapses. The local
input capacitance prevents severe brownouts in most
applications.
Output Capacitor Selection (COUT1, COUT2
)
The output decoupling capacitors should be located as
close as possible to the OUT pins. A 1μF capacitor for
COUT1 and a 1μF to 10μF capacitor for COUT2 are
selected to get good dynamic performance. For ceramic
capacitor, temperature, DC bias and package size will
change the effective capacitance, so enough margins
of COUT1 and COUT2 must be considered in design.
PCB Layout
To obtain better performance of the SGM2058, the
input and output bypass capacitors must be placed as
close as possible to the IN pin and OUTx pins
separately. There are four high-current paths which are
GND, IN, CP and CN. The short and wide traces must
be used to connect these pins.
Fly Capacitor Selection (CFLY
According to Equation 1, the output voltage and
resistance will be affected by the capacitance of the
)
C
FLY. If the users prepare to use the charge pump in
heavy load condition, it is recommended to set a larger
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
MARCH 2023 ‒ REV.A to REV.A.1
Page
Updated Functional Block Diagram......................................................................................................................................................................7
Changes from Original (MARCH 2022) to REV.A
Page
Changed from product preview to production data.............................................................................................................................................All
SG Micro Corp
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MARCH 2023
9
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
TQFN-1.8×1.4-10L
NOTE: All linear dimensions are in millimeters.
SG Micro Corp
TX00074.000
www.sg-micro.com
PACKAGE INFORMATION
TAPE AND REEL INFORMATION
REEL DIMENSIONS
TAPE DIMENSIONS
P2
P0
W
Q2
Q4
Q2
Q4
Q2
Q4
Q1
Q3
Q1
Q3
Q1
Q3
B0
Reel Diameter
P1
A0
K0
Reel Width (W1)
DIRECTION OF FEED
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF TAPE AND REEL
Reel Width
Reel
Diameter
A0
B0
K0
P0
P1
P2
W
Pin1
Package Type
W1
(mm)
(mm) (mm) (mm) (mm) (mm) (mm) (mm) Quadrant
TQFN-1.8×1.4-10L
7″
9.0
1.75
2.10
1.00
4.0
4.0
2.0
8.0
Q1
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PACKAGE INFORMATION
CARTON BOX DIMENSIONS
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF CARTON BOX
Length
(mm)
Width
(mm)
Height
(mm)
Reel Type
Pizza/Carton
7″ (Option)
7″
368
442
227
410
224
224
8
18
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TX20000.000
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