SGM6611
12.6V, 7A Fully-Integrated
Synchronous Boost Converter
GENERAL DESCRIPTION
The SGM6611 family includes the SGM6611A and the
SGM6611B. The SGM6611 is a fully-integrated
synchronous boost converter. The 2.7V to 12V operating
input voltage is suitable for single-cell or two-cell
Li-Ion/Polymer batteries. This device is capable to
provide 7A continuous switch current and an output
voltage range of 4.5V to 12.6V. It also has an
adjustable switching frequency ranging from 200kHz to
2.2MHz.
The SGM6611 family has two operation modes, the
pulse width modulation (PWM) mode and pulse
frequency modulation (PFM). The SGM6611 family
adopts the PWM mode at moderate to heavy load. The
PFM mode is applied at light load by SGM6611A to
improve the efficiency. However, the SGM6611B still
adopts the PWM mode to prevent the device from low
switching frequency faults. The protection features
include output over-voltage protection at 13.2V,
cycle-by-cycle over-current protection and thermal
shutdown. The device also involves the functions of
4ms built-in soft-start and adjustable switch peak
current limit.
The SGM6611A and SGM6611B are both available in a
Green TQFN-2×2.5-11L package.
SG Micro Corp
www.sg-micro.com
FEATURES
● 2.7V to 12V Input Voltage Range
● 4.5V to 12.6V Output Voltage Range
● Up to 90% Efficiency
(VIN = 3.3V, VOUT = 9V, IOUT = 2A)
● Adjustable Peak Current Limit up to 9.5A for
High Pulse Current
● Adjustable Switching Frequency: 200kHz to 2.2MHz
● 4ms Built-in Soft-Start Time
● PFM Operation Mode at Light Load (SGM6611A)
● Forced PWM Operation Mode at Light Load
(SGM6611B)
● Internal Output Over-Voltage Protection at 13.2V
● Over-Current Protection
● Thermal Shutdown
● Available in a Green TQFN-2×2.5-11L Package
APPLICATIONS
Portable POS Machine
Bluetooth Speaker
E-Cigarette
Fast-Charging Power Bank
OCTOBER 2021 – REV. A. 3
12.6V, 7A Fully-Integrated
Synchronous Boost Converter
SGM6611
PACKAGE/ORDERING INFORMATION
MODEL
PACKAGE
DESCRIPTION
SPECIFIED
TEMPERATURE
RANGE
ORDERING
NUMBER
SGM6611A
TQFN-2×2.5-11L
-40℃ to +85℃
SGM6611AYTQV11G/TR
SGM6611B
TQFN-2×2.5-11L
-40℃ to +85℃
SGM6611BYTQV11G/TR
PACKAGE
MARKING
6611A
XXXXX
6611B
XXXXX
PACKING
OPTION
Tape and Reel, 3000
Tape and Reel, 3000
MARKING INFORMATION
NOTE: XXXXX = Date Code and Vendor Code.
XXXXX
Vendor Code
Date Code - Week
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.
ABSOLUTE MAXIMUM RATINGS
BOOT Voltage ........................................... -0.3V to VSW + 6V
VIN, SW, FSW, VOUT Voltages ...................... -0.3V to 14.5V
EN, VCC, COMP, ILIM, FB Voltages .................... -0.3V to 6V
Package Thermal Resistance
TQFN-2×2.5-11L, θJA ................................................. 60℃/W
Junction Temperature .................................................+150℃
Storage Temperature Range........................ -65℃ to +150℃
Lead Temperature (Soldering, 10s) ............................+260℃
ESD Susceptibility
HBM ............................................................................. 1500V
MM ................................................................................. 300V
CDM ............................................................................ 1000V
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range ............................................2.7V to 12V
Output Voltage Range ......................................4.5V to 12.6V
Inductance, Effective Value, L ....................... 0.47μH to 10μH
Input Capacitance, Effective Value, CIN ............... 10μF (MIN)
Output Capacitance, Effective Value, COUT ... 10μF to 1000μF
Operating Junction Temperature Range ...... -40℃ to +125℃
Operating Ambient Temperature Range......... -40℃ to +85℃
SG Micro Corp
www.sg-micro.com
OVERSTRESS CAUTION
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.
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.
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 even small parametric changes could cause the
device not to meet the published specifications.
DISCLAIMER
SG Micro Corp reserves the right to make any change in
circuit design, or specifications without prior notice.
OCTOBER 2021
2
12.6V, 7A Fully-Integrated
Synchronous Boost Converter
SGM6611
PIN CONFIGURATION
SGM6611A/SGM6611B (TOP VIEW)
SW
10
BOOT
2
9
VIN
FB
3
8
ILIM
COMP
4
7
EN
FSW
1
VCC
11
5
6
GND
VOUT
TQFN-2×2.5-11L
PIN DESCRIPTION
PIN
NAME
I/O
FUNCTION
1
FSW
I
The switching frequency is programmed by a resistor between this pin and the GND pin.
2
VCC
O
Output of the Internal Regulator. The VCC pin connects a ceramic capacitor (> 1.0μF) to
ground.
3
FB
I
Output Voltage Feedback.
4
COMP
O
Output of the Internal Error Amplifier. Connect a loop compensation network between this
pin and the GND pin.
5
GND
-
Ground.
6
VOUT
O
Boost Converter Output.
7
EN
I
8
ILIM
O
9
VIN
I
10
BOOT
O
11
SW
I
Enable Logic Input. Logic high makes the circuit enabled, and logic low makes it disabled
and the device enters shutdown mode.
Adjustable Switch Peak Current Limit. Connect an external resistor between this pin and the
GND pin.
IC Power Supply Input.
Power Supply for High-side MOSFET Gate Driver. Strongly recommend to connect a
capacitor between this pin and the SW pin.
Switching Node Pin. Connect to the drain of the internal low-side power MOSFET and the
source of the internal high-side power MOSFET.
NOTE: I = input, O = output.
SG Micro Corp
www.sg-micro.com
OCTOBER 2021
3
12.6V, 7A Fully-Integrated
Synchronous Boost Converter
SGM6611
ELECTRICAL CHARACTERISTICS
(VIN = 2.7V to 5.5V, VOUT = 9V, Full = -40℃ to +85℃, typical values are at TA = +25℃, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
TEMP
MIN
Full
2.7
TYP
MAX
UNITS
12
V
Power Supply
Input Voltage Range
VIN
VIN Under-Voltage Lockout Threshold
VIN_UVLO
VIN Under-Voltage Lockout Hysteresis
VIN_HYS
VCC Regulation
VCC
VCC Under-Voltage Lockout Threshold
Operating Quiescent Current
VIN Pin
VOUT Pin
Shutdown Current into the VIN Pin
VCC_UVLO
IQ
ISHDN
VIN rising
VIN falling
2.5
+25℃
2.62
2.4
V
+25℃
100
mV
ICC = 2mA, VIN = 8V
+25℃
5
V
VCC falling
+25℃
IC enabled, no load, VFB = 1.3V,
VOUT = 12V
+25℃
IC disabled
+25℃
2.1
V
0.23
0.4
90
130
0.6
1.1
μA
12.6
V
μA
Output
Output Voltage Range
VOUT
Reference Voltage at the FB Pin
VREF
Leakage Current into the FB Pin
PWM mode
Full
4.5
Full
1.181
1.205
1.229
V
PFM mode
+25℃
1.207
IFB_LKG
VFB = 1.2V
+25℃
10
100
nA
Output Over-Voltage Protection Threshold
VOVP
VOUT rising
Full
13.2
13.55
V
Output Over-Voltage Protection Hysteresis
VOVP_HYS
Soft Startup Time
12.95
VOUT falling below VOVP
+25℃
0.15
V
tSS
COUT (effective) = 47μF, IOUT = 0A
+25℃
4
ms
Error Amplifier
COMP Pin Sink Current
ISINK
VFB = VREF + 100mV, VCOMP = 1.2V
+25℃
120
μA
COMP Pin Source Current
ISOURCE
VFB = VREF - 100mV, VCOMP = 1.2V
+25℃
15
μA
High Clamp Voltage at the COMP Pin
VCCLPH
VFB = 1.1V, RILIM = 127kΩ
+25℃
2.0
V
Low Clamp Voltage at the COMP Pin
VCCLPL
Error Amplifier Transconductance
GEA
VFB = 1.3V, RILIM = 127kΩ
+25℃
0.4
V
VCOMP = 1.2V
+25℃
135
μS
VCC = 5V
+25℃
27
34
mΩ
VCC = 5V
+25℃
15
20
mΩ
470
500
Power Switch
High-side MOSFET On-Resistance
Low-side MOSFET On-Resistance
RDS(ON)
Switching Frequency
Switching Frequency
Minimum On-Time
fSW
tON_MIN
RFREQ = 301kΩ
+25℃
RFREQ = 46.4kΩ
+25℃
440
2200
kHz
kHz
VCC = 5V
+25℃
120
ns
RILIM = 127kΩ
+25℃
Current Limit
Switch Peak Current Limit (SGM6611A)
ILIM
Reference Voltage at the ILIM Pin
VILIM
+25℃
EN Logic High Threshold
VENH
Full
EN Logic Low Threshold
VENL
Full
EN Pull-Down Resistor
REN
+25℃
8.5
9.5
10.8
1.205
A
V
EN Logic Input
1.2
V
0.4
V
800
kΩ
TA rising
160
℃
TA falling below TSD
20
℃
Thermal Shutdown
Thermal Shutdown Threshold
TSD
Thermal Shutdown Hysteresis
TSD_HYS
SG Micro Corp
www.sg-micro.com
OCTOBER 2021
4
12.6V, 7A Fully-Integrated
Synchronous Boost Converter
SGM6611
TYPICAL PERFORMANCE CHARACTERISTICS
At TA = +25℃, VIN = 3.6V, VOUT = 9V, unless otherwise noted.
Efficiency vs. Output Current
100
90
VIN = 3.6V
80
SGM6611A
Efficiency (%)
70
60
50
40
30
10
0.001
0.01
0.1
1
SGM6611A
70
60
50
40
30
VOUT = 5V
VOUT = 9V
VOUT = 12V
20
0
0.0001
VOUT = 9V
90
80
Efficiency (%)
Efficiency vs. Output Current
100
VIN = 3V
VIN = 3.6V
VIN = 4.2V
20
10
0.0001
10
0.001
Efficiency vs. Output Current
90
VIN = 3.6V
10
VOUT = 9V
90
80
70
70
60
Efficiency (%)
Efficiency (%)
1
Efficiency vs. Output Current
100
80
SGM6611B
50
40
30
VOUT = 5V
VOUT = 9V
VOUT = 12V
20
10
0
0.0001
0.001
0.01
0.1
1
SGM6611B
60
50
40
30
20
VIN = 3V
VIN = 3.6V
VIN = 4.2V
10
0
0.0001
10
Output Current (A)
0.001
0.01
0.1
1
10
Output Current (A)
Current Limit vs. Setting Resistance
Switching Frequency vs. Setting Resistance
12
2500
10
2000
Frequency (kHz)
Current Limit (A)
0.1
Output Current (A)
Output Current (A)
100
0.01
8
6
4
1500
1000
500
2
120
160
200
240
280
Resistance (kΩ)
SG Micro Corp
www.sg-micro.com
320
360
400
0
0
100 200 300 400 500 600 700 800 900
Resistance (kΩ)
OCTOBER 2021
5
12.6V, 7A Fully-Integrated
Synchronous Boost Converter
SGM6611
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
At TA = +25℃, VIN = 3.6V, VOUT = 9V, unless otherwise noted.
Quiescent Current vs. Temperature
160
0.9
140
0.8
120
Quiescent Current (μA)
Shutdown Current (μA)
Shutdown Current vs. Temperature
1.0
0.7
0.6
0.5
0.4
0.3
100
80
60
40
20
0.2
-40
-20
0
20
40
60
80
100
0
-40
-20
0
20
40
80
Temperature (℃)
Reference Voltage vs. Temperature
Switching Waveforms in PFM Mode
1.215
VOUT
AC Coupled
1.210
1A/div
1.205
IL
1.200
100
50mV/div
1.220
1.195
5V/div
Reference Votlage (V)
60
Temperature (℃)
1.190
VSW
1.185
VIN = 3.6V, VOUT = 9V, IOUT = 200mA
1.180
-40
-20
0
20
40
60
80
Temperature (℃)
SG Micro Corp
www.sg-micro.com
100 120 140
Time (1μs/div)
OCTOBER 2021
6
12.6V, 7A Fully-Integrated
Synchronous Boost Converter
SGM6611
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
At TA = +25℃, VIN = 3.6V, VOUT = 9V, unless otherwise noted.
Switching Waveforms in DCM
Switching Waveforms in CCM
VOUT
IL
5V/div
5V/div
VSW
AC Coupled
VOUT
2A/div
500mA/div
IL
100mV/div
10mV/div
AC Coupled
VSW
VIN = 3.6V, VOUT = 9V, IOUT = 2A
VIN = 3.6V, VOUT = 9V, IOUT = 20mA
Time (1μs/div)
Time (1μs/div)
Load Transient Response
Line Transient Response
500mV/div
500mA/div
IOUT
VIN
AC Coupled
VOUT
VIN = 3.6V, VOUT = 9V, IOUT = 1A to 2A
200mV/div
500mV/div
AC Coupled
VOUT
VIN = 3.3V to 4V, VOUT = 9V, IOUT = 2A
Time (500μs/div)
Time (500μs/div)
Startup Waveforms
Shutdown Waveforms
2A/div
IL
2V/div
VOUT
1V/div
2V/div
VOUT
1V/div
VEN
VEN
2A/div
IL
Time (1ms/div)
SG Micro Corp
www.sg-micro.com
Time (50μs/div)
OCTOBER 2021
7
SGM6611
12.6V, 7A Fully-Integrated
Synchronous Boost Converter
PCB LAYOUT
Figure 1. Layout Example
SG Micro Corp
www.sg-micro.com
OCTOBER 2021
8
SGM6611
12.6V, 7A Fully-Integrated
Synchronous Boost Converter
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
OCTOBER 2021 ‒ REV.A.2 to REV.A.3
Page
Updated the Enable and Disable section ............................................................................................................................................................. 9
Added the Figure 5. Layout Example ................................................................................................................................................................. 15
APRIL 2021 ‒ REV.A.1 to REV.A.2
Page
Updated Loop Stability section .......................................................................................................................................................................... 14
MARCH 2021 ‒ REV.A to REV.A.1
Page
Updated Package Outline Dimensions section .................................................................................................................................................. 17
Changes from Original (JULY 2018) to REV.A
Changed from product preview to production data ............................................................................................................................................. All
SG Micro Corp
www.sg-micro.com
OCTOBER 2021
9
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
TQFN-2×2.5-11L
E
L1
L1
N10
N7
L
N6
e1
D
N11
N5
b1
b2
b
(0.18)
N4
PIN 1#
N1
b
1/2 e
e
BOTTOM VIEW
TOP VIEW
2.40
0.40
1.00
2.90
A
1.80
1.00
0.38
1.00
0.70
0.35
0.25
A1
A2
0.55
SIDE VIEW
0.25
0.50
RECOMMENDED LAND PATTERN (Unit: mm)
Symbol
Dimensions In Millimeters
MIN
MOD
MAX
A
0.700
0.750
0.800
A1
0.000
0.020
0.050
A2
0.203 REF
D
2.400
2.500
2.600
E
1.900
2.000
2.100
e
0.500 BSC
e1
0.700 BSC
b
0.200
0.250
0.300
b1
0.300
0.350
0.400
b2
0.950
1.000
1.050
L
0.300
0.350
0.400
L1
0.750
0.800
0.850
NOTE: This drawing is subject to change without notice.
SG Micro Corp
www.sg-micro.com
TX00150.001
PACKAGE INFORMATION
TAPE AND REEL INFORMATION
REEL DIMENSIONS
TAPE DIMENSIONS
P2
W
P0
Q1
Q2
Q1
Q2
Q1
Q2
Q3
Q4
Q3
Q4
Q3
Q4
B0
Reel Diameter
A0
P1
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
Diameter
Reel Width
W1
(mm)
A0
(mm)
B0
(mm)
K0
(mm)
P0
(mm)
P1
(mm)
P2
(mm)
W
(mm)
Pin1
Quadrant
TQFN-2×2.5-11L
7″
9.5
2.20
2.70
0.95
4.0
4.0
2.0
8.0
Q2
SG Micro Corp
www.sg-micro.com
TX10000.000
DD0001
Package Type
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)
Pizza/Carton
7″ (Option)
368
227
224
8
7″
442
410
224
18
SG Micro Corp
www.sg-micro.com
DD0002
Reel Type
TX20000.000