ADP3031 Ver la hoja de datos (PDF) - Analog Devices
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ADP3031 Datasheet PDF : 8 Pages
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PRELIMINARY TECHNICAL DATA
ADP3031
ABSOLUTE MAXIMUM RATINGS*
Input Voltage .............................................. –0.3 V to +6 V
SW Voltage ................................................................. 14 V Pin
COMP Voltage ........................................ –0.3 V to +2.5 V 1
FB Voltage ............................................... –0.3 V to +1.3 V
SD Voltage .................................................. –0.3 V to +6 V 2
RT Voltage ............................................... –0.3 V to +1.2 V 3
PGND TO GND ................................................ ±200 mV
Operating Ambient Temperature Range ...... –40°C to 85°C 4
Operating Junction Temperature Range ..... –40°C to 125°C
Storage Temperature Range .................... –65°C to +150°C 5
θJA Two Layer ..................................................... 206°C/W
θJA Four Layer ..................................................... 142°C/W 6
Lead Temperature Range (Soldering, 60 sec.) .......... 300°C 7
*This is a stress rating only; operation beyond these limits can cause the device
to be permanently damaged. Unless otherwise specified, all voltages are
referenced to GND
8
ORDERING GUIDE
Model
Voltage Package Branding
Output Option Information
ADP3031ARM
ADJ MSOP-8 P8A
PIN FUNCTION DESCRIPTIONS
Mnemonic Function
COMP
FB
SD
PGND
SW
IN
RT
GND
Compensation Input.
Feedback voltage sense input.
Shutdown Input.
Power Ground. Ground return for
power transistor.
Switching Output.
Main Power Supply Input.
Frequency Setting Input. A resistor
between this pin and GND sets the
switching frequency of the device.
Analog Ground. The control
circuitry is referenced to this ground.
PIN CONFIGURATION
COMP 1
8 GND
FB 2
MSOP8 7 RT
TOP VIEW
SD 3 (Not to Scale) 6 IN
PGND 4
5 SW
VOUT
R1
FB
2
R2
RT
7
RT
SD
3
RC
IN
CC
REF
COMP
1
ERROR
AMP
gm
IN
6
BIAS
ADP3031
CIN
L1
RAMP
GEN
COMPARATOR
F/F
RQ
S
DRIVER
SW
5
D1
VOUT
COUT
OSC
8
GND
CURRENT
SENSE
AMPLIFIER
4
PGND
Figure 1. Typical Application
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the device features proprietary ESD protection circuitry, permanent damage may occur on devices
subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recom-
mended to avoid performance degradation or loss of functionality.
REV. PrB
–3–
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