SGM2101 Datasheet, PDF (1/33 Pages) SG Micro Corp – DC/DC Power Management Unit

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 1
SUSDB 2
ONB 3
N.C. 4
N.C. 5
GND 6
PGSD 7
LXSD 8
PVSD 9
ONSD 10
FBSD 11
CCSD 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
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