SGM2100 Datasheet, PDF (1/36 Pages) SG Micro Corp – DC-DC Power Management Unit

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.
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
The SGM2100 is available in TQFN-7×7-48L package and is
rated over the -40°C to +85°C temperature range.
PIN CONFIGURATION (TOP VIEW)
TYPICAL APPLICATION IN
DIGITAL CAMERAS
SU
5V, System Power
2AA/Li-ion
1.5V~4.2V
SD
MAIN
1.8V, DSP
3.3V, I/O
AUX2
-8V, CCD Bias, LCD Bias
AUX1
AUX3
AUX4
15V, LCD Bias
30V, LED Backlight
2.5V, Memory
FB3H 1
SUSD4 2
ON4 3
CC1 4
FB1 5
ON1 6
PGSD 7
LXSD 8
PVSD 9
ONSD 10
FBSD 11
CCSD 12
GND
36 FB2
35 FB4
34 CC2
33 CC4
32 ON2
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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