Power Management. SGM2101 Datasheet

SGM2101 Management. Datasheet pdf. Equivalent


Shengbang Microelectronics SGM2101
SGM2101
Five-Channel, High Efficiency,
DC/DC Power Management Unit
GENERAL DESCRIPTION
The SGM2101 is a single chip power management unit for a
wide range of portable applications. It incorporates three
synchronous switching regulators and two switching regulator
controllers in a space saving thin QFN package. High efficiency,
compact size and flexible configuration make SGM2101 the
ideal power supply solution for two AA cells or single Li-ion
battery powered equipments.
Synchronous switching regulators, SU, SD, & MAIN, provide
the core powers for CPU, DSP and I/O. Switching regulator
controllers, AUXA and AUXB, coupled with external MOSFETs
provide versatile auxiliary powers for LCD panel bias, LED
backlight, stepping motor, or memory module.
All channels operate at the same programmable constant
switching frequency, ranging from 100kHz to 1MHz. Each
channel, with built-in digital soft-start, can be individually
selected, and programmed to the desired output voltage with
two external resistors. Power OK, short-circuit flag and thermal
protection features provide the system status and extra level of
fault protection.
The SGM2101 is available in Green TQFN-7×7-48L package
and is rated over the -40°C to +85°C temperature range.
TYPICAL APPLICATION IN
DIGITAL CAMERAS
Li-ion/2AA
1.5V~4.2V
SU 5V, System Power
SD 1.8V, DSP
MAIN
3.3V, I/O
AUXA
AUXB
30V, LED Backlight
2.5V, Memory
FEATURES
2A, Step-Up Synchronous Switching Regulator with
1.1V Start-Up Voltage, 90% Efficiency
1A, Step-Down Synchronous Switching Regulator,
90% Efficiency
1A, Pin Selectable Step-Up or Step-Down, Synchronous
Switching Regulator, 90% Efficiency
Constant Current Step-Up Switching Regulator
Controller, LED Driver, with Output Open Protection
Pin Selectable Step-Up or Step-Down Switching
Regulator Controller, with Power OK Indicator
Operates from 100kHz to 1MHz Switching Frequency
Individual Enable, Digital Soft-Start and Overload
Protection
1μA Quiescent Current in Shutdown Mode
Available in Green TQFN-7×7-48L Package
APPLICATIONS
Digital still Cameras, Camcorders
Smart Mobile Phones, PDAs
Portable GPS Equipments
Handheld Multi-Media Equipments
PIN CONFIGURATION (TOP VIEW)
FBAH
SUSDB
ONB
N.C.
N.C.
GND
PGSD
LXSD
PVSD
ONSD
FBSD
CCSD
1
2
3
4
5
6
7
8
9
10
11
12
GND
36 N.C.
35 FBB
34 N.C.
33 CCB
32 GND
31 PVM
30 LXM
29 PGM
28 PVSU
27 LXSU
26 PGSU
25 OSC
SG Micro Corp
www.sg-micro.com
REV. A. 1


SGM2101 Datasheet
Recommendation SGM2101 Datasheet
Part SGM2101
Description DC-DC Power Management
Feature SGM2101; SGM2101 Five-Channel, High Efficiency, DC/DC Power Management Unit GENERAL DESCRIPTION The SGM2101 .
Manufacture Shengbang Microelectronics
Datasheet
Download SGM2101 Datasheet




Shengbang Microelectronics SGM2101
SGM2101
PACKAGE/ORDERING INFORMATION
Five-Channel, High Efficiency,
DC/DC Power Management Unit
ORDER NUMBER
SGM2101YTQC48/TR
PACKAGE
DESCRIPTION
TQFN-7×7-48L
SPECIFIED
TEMPERATURE
RANGE
-40°C to +85°C
MARKING
INFORMATION
SGM2101YTQ48
PACKAGE
OPTION
Tape and Reel, 2500
ABSOLUTE MAXIMUM RATINGS
Storage Temperature Range..............................-65to +125
Junction Temperature........................................................150
Operating Temperature Range............................-40to +85
Lead Temperature (Soldering 10 sec)
...........................................................................................260
ESD Susceptibility
HBM..................................................................................3000V
MM......................................................................................200V
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.
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 latest datasheet.
PIN DESCRIPTION
PIN NAME
FUNCTION
Voltage Feedback Input of AUXA Controller. Connect a resistive voltage-divider from the boost converter
1
FBAH
output to FBAH to set the output voltage. The feedback threshold is 0.8V. This pin is high impedance in
shutdown. FBAH provide conventional voltage.
2
SUSDB
Configures AUXB as a Boost or a Buck. This function must be hardwired. On-the-fly changes are not
allowed. Connected it to PV for Step-up mode, and connect it to GND for Step-down mode.
AUXB Controller ON/OFF Input. Logic high = ON; however, turn-on is locked out until 1024 OSC
3
ONB
cycles after the boost has reached regulation. This pin has an internal 475kpull-down resistance to
GND.
4
N.C.
No internal connection.
5
N.C.
No internal connection.
6
GND
Analog Ground. Connect all PGxx_ pins to GND with short wide traces as close to the IC as possible.
SG Micro Corp
www.sg-micro.com
2



Shengbang Microelectronics SGM2101
SGM2101
PIN DESCRIPTION
Five-Channel, High Efficiency,
DC/DC Power Management Unit
PIN NAME
FUNCTION
7
PGSD
Power Ground. Connect all PGxx_ pins to GND with short wide traces as close to the IC as possible.
8
LXSD
Buck Converter Switching Node. Connect to the inductor of the buck converter. LXSD is high
impedance in shutdown.
9
PVSD
Buck Converter Supply Input. Bypass to GND with a 1µF ceramic capacitor. The efficiency of this
channel is measured from this pin.
Buck Converter ON/OFF Control Input. Logic high = ON; however, turn-on is locked out until 1024
10
ONSD
OSC cycles after the boost has reached regulation. This pin has an internal 475kpull-down
resistance to GND.
11
FBSD
Buck Converter Feedback Input. The feedback threshold is 0.8V. This pin is high impedance in
shutdown.
Buck Converter Compensation Node. Connect a series resistor-capacitor from this pin to GND to
12
CCSD
compensate the control loop of the converter. This pin is actively driven to GND in shutdown,
overload and thermal limit.
Configures the Main Converter as a Boost or a Buck. This function must be hardwired. On-the-fly
13
SUSD
changes are not allowed. With SUSD connected to PV, the main is configured as a boost and PVM is
the converter’s output. With SUSD connected to GND, this channel is configured as a buck; PVM is
the Power Source Input Pin of Main Converter.
Main Converter Compensation Node. Connect a series resistor-capacitor from this pin to GND to
14
CCM
compensate the control loop of the converter. This pin is actively driven to GND in shutdown,
overload, and thermal limit.
15
FBM
Main Converter Feedback Input. The feedback threshold is 0.8V. This pin is high impedance in
shutdown. The output voltage must not be set higher than the boost output.
16
ONM
Main ON/OFF Input. Logic high = ON; however, turn-on is lock out until 1024 OSC cycles after the
boost has reached regulation. This pin has an internal 475kpull-down resistance to GND.
17
REF
Reference Output. Bypass REF to GND with a 0.1µF or greater capacitor. The maximum allowed
REF load is 200µA. REF is actively pulled to GND when the boost is shutdown.
Boost Converter Compensation Node. Connect a series resistor-capacitor from this pin to GND to
18
CCSU
compensate the control loop of the converter. This pin is actively driven to GND in shutdown,
overload, and thermal limit.
19
FBSU
Boost Converter Feedback Input. The feedback threshold is 0.8V. This pin is high impedance in
shutdown.
20
ONSU
Boost Converter ON/OFF Input. Logic high = ON; however, turn-on is lock out until 1024 OSC cycles
after the boost has reached regulation. This pin has an internal 475kpull-down resistance to GND.
Open-Drain, Active-Low, Short-Circuit Flag Output. SCF goes open when overload protection occurs
21
SCF
and during startup. SCF can drive high-side PMOS switches connected to one or more outputs to
completely disconnect the load when the channel turns off in response to a logic command or an
overload.
22
N.C.
No internal connection.
SG Micro Corp
www.sg-micro.com
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