SGM2100
Seven-Channel, High Efficiency,
DC-DC Power Management Unit
GENERAL DESCRIPTION
The SGM2100 is a single chip power management unit for a
wide range of portable applications. It incorporates three
synchronous switching regulators and four switching regulator
controllers in a space saving thin QFN package. High efficiency,
compact size and flexible configuration make SGM2100 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, AUX1, AUX2, AUX3 and AUX4, coupled with
external MOSFETs provide versatile auxiliary powers for image
sensor, 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 SGM2100 is available in TQFN-7×7-48L package and is
rated over the -40°C to +85°C temperature range.
INDL2
INDL4
38
DL4N
39
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
Step-Up Switching Regulator Controller, with Power OK
Indicator
Transformerless Inverting Switching Regulator Controller
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 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)
DL4P
37
36
35
34
33
32
31
30
29
28
27
26
25
13
14
15
16
17
18
19
20
21
22
23
24
FB3L
GND
41
ON3
CC3
DL1
44
DL3
43
DL2
42
PV
45
TYPICAL APPLICATION IN
DIGITAL CAMERAS
SU
SD
48
47
46
5V, System Power
1.8V, DSP
3.3V, I/O
-8V, CCD Bias, LCD Bias
FB3H
SUSD4
ON4
CC1
FB1
ON1
PGSD
LXSD
PVSD
ONSD
FBSD
CCSD
1
2
3
4
5
6
7
8
9
10
11
12
40
FB2
FB4
CC2
CC4
ON2
PVM
LXM
PGM
PVSU
LXSU
PGSU
OSC
2AA/Li-ion
1.5V~4.2V
MAIN
GND
AUX2
AUX1
15V, LCD Bias
AUX3
30V, LED Backlight
2.5V, Memory
REF
SUSD
CCSU
FBSU
FBM
ONM
CCM
ONSU
SCF
AUX1OK
AUX4OK
SDOK
AUX4
SG Micro Corp
www.sg-micro.com
REV. A. 2
SGM2100
PACKAGE/ORDERING INFORMATION
ORDER NUMBER
SGM2100YTQC48/TR
Seven-Channel, High Efficiency,
DC-DC Power Management Unit
SPECIFIED
TEMPERATURE
RANGE
-40°C to +85°C
PACKAGE
DESCRIPTION
TQFN-7×7-48L
MARKING
INFORMATION
SGM2100YTQ48
PACKAGE
OPTION
Tape and Reel, 2500
ABSOLUTE MAXIMUM RATINGS
Storage Temperature Range…………..………. -65℃ to +125℃
Junction Temperature……………………….…....………….150℃
Operating Temperature Range………….…...….. -40℃ to +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
1
NAME
FB3H
FUNCTION
Voltage Feedback Input of AUX3 Controller. Connect a resistive voltage-divider from the step-up converter
output to FB3H to set the output voltage. The feedback threshold is 0.8V. This pin is high impedance in
shutdown. FB3H provide conventional voltage.
Configures AUX4 as a Step-Up or a Step-Down. 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.
AUX4 Controller ON/OFF Input. Logic high = ON; however, turn-on is locked out until 1024 OSC
cycles after the step-up has reached regulation. This pin has an internal 475kΩ pull-down resistance
to GND.
AUX1 Controller Compensation Node. Connect a series resistor-capacitor from this pin to GND to
compensate the control loop of the converter. This pin is actively driven to GND in shutdown,
overload, and thermal limit.
2
SUSD4
3
ON4
4
CC1
SG Micro Corp
www.sg-micro.com
2
SGM2100
PIN DESCRIPTION
PIN
5
Seven-Channel, High Efficiency,
DC-DC Power Management Unit
NAME
FB1
FUNCTION
AUX1 Controller Feedback Input. The feedback threshold is 0.8V. This pin is high impedance in
shutdown.
AUX1 Controller ON/OFF Input. Logic high = ON; however, turn-on is locked out until 1024 OSC
cycles after the step-up has reached regulation. This pin has an internal 475kΩ pull-down resistance to
GND.
Power Ground. Connect all PGxx_ pins to GND with short wide traces as close to the IC as possible.
Step-Down Converter Switching Node. Connect to the inductor of the step-down converter. LXSD is
high impedance in shutdown.
Step-Down Converter Supply Input. Bypass to GND with a 1µF ceramic capacitor. The efficiency of
this channel is measured from this pin.
Step-Down Converter ON/OFF Control Input. Logic high = ON; however, turn-on is locked out until
1024 OSC cycles after the step-up has reached regulation. This pin has an internal 475kΩ pull-down
resistance to GND.
Step-Down Converter Feedback Input. The feedback threshold is 0.8V. This pin is high impedance in
shutdown.
Step-Down Converter Compensation Node. Connect a series resistor-capacitor from this pin to GND
to 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 Step-Up or a Step-Down. This function must be hardwired.
On-the-fly changes are not allowed. With SUSD connected to PV, the main is configured as a step-up
and PVM is the converter’s output. With SUSD connected to GND, this channel is configured as a
Step-Down, 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
compensate the control loop of the converter. This pin is actively driven to GND in shutdown, overload,
and thermal limit.
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 step-up output.
Main ON/OFF Input. Logic high = ON; however, turn-on is lock out until 1024 OSC cycles after the
step-up has reached regulation. This pin has an internal 475kΩ pull-down resistance to GND.
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 step-up is shutdown.
Step-Up Converter Compensation Node. Connect a series resistor-capacitor from this pin to GND to
compensate the control loop of the converter. This pin is actively driven to GND in shutdown, overload,
and thermal limit.
Step-Up Converter Feedback Input. The feedback threshold is 0.8V. This pin is high impedance in
shutdown.
Step-Up Converter ON/OFF Input. Logic high = ON; however, turn-on is lock out until 1024 OSC
cycles after the step-up has reached regulation. This pin has an internal 475kΩ pull-down resistance to
GND.
6
ON1
7
PGSD
8
LXSD
9
PVSD
10
ONSD
11
FBSD
12
CCSD
13
SUSD
14
CCM
15
FBM
16
ONM
17
REF
18
CCSU
19
FBSU
20
ONSU
SG Micro Corp
www.sg-micro.com
3
SGM2100
PIN DESCRIPTION
PIN
NAME
Seven-Channel, High Efficiency,
DC-DC Power Management Unit
FUNCTION
Open-Drain, Active-Low, Short-Circuit Flag Output. SCF goes open when overload protection
occurs 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.
Open-Drain, Active-Low, Power-OK Signal of AUX1.
AUX1OK
goes low when the AUX1 controller
has successfully completed soft-start.
AUX1OK
goes high impedance in shutdown, overload, and
thermal limit.
Open-Drain, Active-Low, Power-OK Signal of AUX4.
AUX4OK
goes low when the AUX4 controller
has successfully completed soft-start.
AUX4OK
goes high impedance in shutdown, overload, and
thermal limit.
Open-Drain, Active-Low, Power-OK Signal of Step-Down Converter.
SDOK
goes low when the
step-down has successfully completed soft-start.
SDOK
goes high impedance in shutdown,
overload and thermal limit.
Oscillator Control. Connect a timing capacitor from OSC to GND and a timing resistor from OSC to
PVSU (or other DC voltage) to set the oscillator frequency between 100kHz and 1MHz. This pin is
high impedance in shutdown.
Power Ground. Connect all PGxx_ pins to GND with short wide traces as close to the IC as
possible.
Step-Up Converter Switching Node. Connect to the inductor of the step-up converter. LXSU is high
impedance in shutdown.
Power Output of the Step-Up Converter regulator. PVSU can also power other converter channels.
Connect PVSU and PV together.
Power Ground. Connect all PGxx_ pins to GND with short wide traces as close to the IC as
possible.
Main Converter Switching Node. Connect to the inductor of the main converter (can be configured
as a step-up or a step-down by SUSD). LXM is high impedance in shutdown.
When SUSD = PVSU, the main converter channel is configured as a step-up and PVM is the main
output. When SUSD = GND, main channel is configured as a step-down and PVM is the power
input.
AUX2 Controller ON/OFF Input. Logic high = ON; however, turn-on is locked out until 1024 OSC
cycles after the step-up has reached regulation. This pin has an internal 475kΩ pull-down
resistance to GND.
AUX4 Controller Compensation Node. Connect a series resistor-capacitor from this pin to GND to
compensate the control loop of the converter. This pin is actively driven to GND in shutdown,
overload, and thermal limit.
AUX2 Controller Compensation Node. Connect a series resistor-capacitor from this pin to GND to
compensate the control loop of the converter. This pin is actively driven to GND in shutdown,
overload, and thermal limit.
AUX4 Controller Feedback Input. The feedback threshold is 0.8V. This pin is high impedance in
shutdown.
21
SCF
22
AUX1OK
23
AUX4OK
24
SDOK
25
OSC
26
PGSU
27
LXSU
28
PVSU
29
PGM
30
LXM
31
PVM
32
ON2
33
CC4
34
CC2
35
FB4
SG Micro Corp
www.sg-micro.com
4
SGM2100
PIN DESCRIPTION
PIN
36
Seven-Channel, High Efficiency,
DC-DC Power Management Unit
NAME
FB2
FUNCTION
AUX2 Controller Feedback Input. This pin is high impedance in shutdown.
Option1
AUX2 as a Step-Up: FB2 feedback threshold is 0.8V.
Option2
AUX2 as an inverter: FB2 feedback threshold is 0.8V.
AUX4 Controller Gate-Drive Output. DL4P drives between INDL4 and GND. The PMIC configures
DL4P to drive a PMOS. DL4P is driven high in shutdown, overload and thermal limit.
Voltage Input of AUX4 Controller Gate-Drive. The voltage at INDL4 sets the high gate-drive voltage.
PMIC connect INDL4 to the external PMOS source terminal to ensure the PMOS is completely off
when DL4P swing high.
AUX4 controller Gate-Drive Output. DL4N drives between INDL4 and GND. The PMIC configures
DL4N to drive an NMOS. DL4N is driven high in shutdown, overload and thermal limit.
Voltage input of AUX2 Controller Gate-Drive. The voltage at INDL2 sets the high gate-drive voltage.
PMIC connect INDL2 to the external PMOS source terminal to ensure the PMOS is completely off
when DL2 swing high.
Analog Ground. Connect all PGxx_ pins to GND with short wide traces as close to the IC as possible.
AUX2 Controller Gate-Drive Output. DL2 drives between INDL2 and GND. The Option1 configures
DL2 to drive an NMOS in a Boost configuration. AUX2 is driven low in shutdown, overload and
thermal limit.
AUX2 Controller Gate-Drive Output. DL2 drives between INDL2 and GND. The PMIC configures DL2
to drive a PMOS in an Inverter configuration. AUX2 is driven low in shutdown, overload and thermal
limit.
AUX3 Controller Gate-Drive Output. Connect to the gate of an NMOS. DL3 drives between PVSU and
GND and supplies up to 500mA. This pin is actively driven to GND in shutdown, overload, and
thermal limit.
AUX1 Controller Gate-Drive Output. Connect to the gate of an NMOS. DL1 drives between PVSU and
GND and supplies up to 500mA. This pin is actively driven to GND in shutdown, overload, and
thermal limit.
IC Power Input. Connect PVSU and PV together.
AUX3 Controller Compensation Node. Connect a series resistor-capacitor from this pin to GND to
compensate the control loop of the converter. This pin is actively driven to GND in shutdown,
overload, and thermal limit.
AUX3 Controller Current-Feedback Input. Connect a resistor from FB3L to GND to set LED current in
LED boost-drive circuits. The feedback threshold is 0.2V. Connecting this pin to GND if just use the
FB3H feedback. This pin is high impedance in shutdown.
AUX3 Controller ON/OFF Input. Logic high = ON; however, turn-on is locked out until 1024 OSC
cycles after the step-up has reached regulation. This pin has an internal 475kΩ pull-down resistance
to GND.
37
DL4P
38
INDL4
39
DL4N
40
INDL2
41
GND
42
DL2
43
DL3
44
DL1
45
PV
46
CC3
47
FB3L
48
ON3
SG Micro Corp
www.sg-micro.com
5
电源技术
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
