SGM6611
12.6V, 7A Fully-Integrated
Synchronous Boost Converter
PRELIMINARY DATASHEET
SG Micro Corp
www.sg-micro.com
DECEMBER 21, 2017
GENERAL DESCRIPTION
The SGM6611 family includes the SGM6611A and the
SGM6611B. The SGM6611 is a fully-integrated
synchronous boost converter with a 16mΩ main power
switch and a 27mΩ rectifier switch. The device provides
a high efficiency and small size power solution for
portable equipment. The SGM6611 features wide input
voltage range from 2.7V to 12V to support applications
powered with single-cell or two-cell Li-Ion/Polymer
batteries. The SGM6611 has 7A continuous switch
current capability and is capable of providing an output
voltage up to 12.6V.
The SGM6611 uses peak current control topology to
regulate the output voltage. In moderate to heavy load
condition, the SGM6611 works in the Pulse Width
Modulation (PWM) mode. In light load condition, the
SGM6611A works in the Pulse Frequency Modulation
(PFM) mode to improve the efficiency, while the
SGM6611B still works in the PWM mode to avoid
application problems caused by low switching
frequency. The switching frequency in the PWM mode
is adjustable from 200kHz to 2.2MHz. The SGM6611
also implements a built-in 4ms soft-start function and
an adjustable peak switch current limit function. In
addition, the device provides 13.2V output over-voltage
protection, cycle-by-cycle over-current protection, and
thermal shutdown protection.
The SGM6611A and SGM6611B are both available in
the Green TQFN-2×2.5-11L package.
FEATURES
● Input Voltage Range: 2.7V to 12V
● Output Voltage Range: 4.5V to 12.6V
● Up to 90% Efficiency at V
IN
= 3.3V, V
OUT
= 9V,
and I
OUT
= 2A
● Resistor-Programmable 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
● Cycle-by-Cycle Over-Current Protection
● Thermal Shutdown
● Available in Green TQFN-2×2.5-11L Package
APPLICATIONS
Bluetooth Speaker
Quick Charge Power Bank
Portable POS Terminal
E-Cigarette
TYPICAL APPLICATION
V
IN
C
1
(C
IN
)
L
R
3
(R
FREQ
)
C
4
OFF
ON
C
3
SW
BOOT
FSW
VIN
EN
VCC
VOUT
GND
FB
COMP
ILIM
C
2
(C
OUT
)
V
OUT
R
1
R
2
C
6
R
4
(R
ILIM
)
R
5
C
5
SGM6611
Figure 1. Typical Application Circuit
12.6V, 7A Fully-Integrated
SGM6611 Synchronous Boost Converter
2
DECEMBER 2017
SG Micro Corp
www.sg-micro.com
PACKAGE/ORDERING INFORMATION
MODEL
PACKAGE
DESCRIPTION
SPECIFIED
TEMPERATURE
RANGE
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
SGM6611A TQFN-2×2.5-11L
-40℃ to +85℃
SGM6611AYTQV11G/TR
6611A
XXXXX
Tape and Reel, 3000
SGM6611B TQFN-2×2.5-11L
-40℃ to +85℃
SGM6611BYTQV11G/TR
6611B
XXXXX
Tape and Reel, 3000
NOTE: XXXXX = Date Code and Vendor Code.
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 V
SW
+ 6V
VIN, SW, FSW, VOUT Voltages ...................... -0.3V to 14.5V
EN, VCC, COMP, ILIM, FB Voltages .................... -0.3V to 6V
Junction Temperature ................................................. +150℃
Storage Temperature Range ........................ -65℃ to +150℃
Lead Temperature (Soldering, 10s) ............................ +260℃
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, C
IN ............... 10μF (MIN)
Output Capacitance, Effective Value, COUT ... 10μF to 1000μF
Operating Junction Temperature Range ...... -40℃ to +125℃
Operating Ambient Temperature Range......... -40℃ to +85℃
OVERSTRESS CAUTION
Stresses beyond those listed may cause permanent damage
to the device. Functional operation of the device at these or
any other
conditions beyond those indicated in the operational
section
of the
specification
is not implied.
Exposure
to absolute
maximum rating conditions for extended periods may affect
reliability.
ESD SENSITIVITY 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.
DISCLAIMER
SG Micro Corp reserves the right to make any change in
circuit
design, specification
or other related things if necessary
without notice at any time.