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Datasheet> All Categories > Development board/suite/development tools> DC862A-B
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DC862A-B

Description
board eval for ltc3221edc
CategoryDevelopment board/suite/development tools   
File Size237KB，4 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance  
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board eval for ltc3221edc

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QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 862
MICROPWER REGULATED CHARGE PUMP DC/DC CONVERTER
LTC3221-3.3, LTC3221-5 and LTC3221
DESCRIPTION
Demonstration circuit 862 is a micropower regulated
charge pump DC/DC converter with the LTC3221 in a
2mmx2mm DFN package. It comes in three assembly
versions, DC862A-A, DC862A-B and DC862A-C, featur-
ing LTC3221EDC-3.3, LTC3221EDC-5, and LTC3221EDC,
respectively. The DC862A-A generates a fixed 3.3V out-
put. The DC862A-B generates a fixed 5V output. The
DC862A-C generates a programmable regulated 3V out-
put. The maximum output current is
60mA.
The LTC3221 draws ultra low quiescent current at no
load to extend battery life. The quiescent current is even
lower than the self-discharging current of many batter-
ies. By adopting a constant current to charge the output,
the output ripple is low even at high input and light load
Table 1. Performance Summary (T
A
= 25°C)
PARAMETER
Input Voltage Range
CONDITION
DC862A-A
DC862A-B
DC862A-C
Maximum Output Current
DC862A-A: V
IN
> 2V; DC862A-B: V
IN
> 3V;
DC862A-C: V
IN
> 1.8V
DC862A-A
Output Voltage V
OUT
V
IN
> 2V, I
OUT
< 60mA
1.8V < V
IN
< 2V, I
OUT
< 25mA
V
IN
> 3V, I
OUT
< 60mA
2.7V < V
IN
< 3V, I
OUT
< 25mA
V
IN
> 1.8V, I
OUT
< 60mA
DC862A-A
DC862A-B
DC862A-C
V
IN
= 4.4V
V
IN
= 5.5V
V
IN
= 3.8V
600kHz
DC862A-A
Efficiency
DC862A-B
DC862A-C
V
IN
= 2V, I
OUT
= 60mA
V
IN
= 2.7V, I
OUT
= 60mA
V
IN
= 1.8V, I
OUT
= 60mA
82%
86%
82.8%
3.168
MINIMUM
1.8V
2.7V
1.8V
60mA
TYPICAL
MAXIMUM
4.4V
5.5V
3.8V
and is rather constant over the full input voltage range.
This minimizes output capacitor size and reduces solu-
tion cost and space. Built-in soft-start prevents exces-
sive inrush current at turn-on and short-circuit current
limit/thermal protection helps the part survive continu-
ous short-circuit. All these features make the circuit ideal
for the low power and space-constrained applications in
battery powered portable systems.
Design files for this circuit board are available. Call
the LTC factory.
LTC is a trademark of Linear Technology Corporation
3.3
3.432
DC862A-B
DC862A-C
I
OUT
= 0mA
4.8
2.88
5
3
5.2
3.12
40mV
P–P
90mV
P–P
57mV
P–P
Output Ripple V
OUT
(20MHz BW)
I
OUT
= 60mA
Nominal Switching Frequency
1

DC862A-B Related Products

DC862A-B LTC3221EDC#TRPBF LTC3221EDC-3.3#TRPBF LTC3221EDC-5#TRPBF DC862A-A DC862A-C LTC3221EDC-5#TRMPBF LTC3221EDC#TRMPBF LTC3221EDC-3.3#TRMPBF LTC3221EDC-5#PBF
Description board eval for ltc3221edc IC reg switched cap dbl adj 6dfn IC reg switchd cap dbl 3.3V 6dfn IC reg switched cap dbl 5V 6dfn board eval for ltc3221edc board eval for ltc3221edc IC REG SWTCHD CAP 5V 60MA 6DFN IC REG SWTCHD CAP ADJ 60MA 6DFN IC REG SWTCHD CAP 3.3V 60MA 6DFN Output current: 60mA Switch operating frequency: 600kHz Output type: Fixed Number of output voltage channels: 1 Function type: Step-Up Output configuration: Positive
Brand Name - Linear Technology Linear Technology Linear Technology - - Linear Technology Linear Technology Linear Technology Linear Technology
Is it Rohs certified? - conform to conform to conform to - - conform to conform to conform to conform to
Maker - Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) - - Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI )
Parts packaging code - DFN DFN DFN - - DFN DFN DFN DFN
package instruction - HVSON, SOLCC6,.08,20 HVSON, SOLCC6,.08,20 HVSON, SOLCC6,.08,20 - - HVSON, HVSON, HVSON, HVSON, SOLCC6,.08,20
Contacts - 6 6 6 - - 6 6 6 6
Manufacturer packaging code - DC6 DC6 DC6 - - DC6 DC6 DC6 DC6
Reach Compliance Code - compli compli compli - - compliant compliant compliant compliant
ECCN code - EAR99 EAR99 EAR99 - - EAR99 EAR99 EAR99 EAR99
Analog Integrated Circuits - Other Types - SWITCHED CAPACITOR REGULATOR SWITCHED CAPACITOR REGULATOR SWITCHED CAPACITOR REGULATOR - - SWITCHED CAPACITOR REGULATOR SWITCHED CAPACITOR REGULATOR SWITCHED CAPACITOR REGULATOR SWITCHED CAPACITOR REGULATOR
Maximum input voltage - 5.5 V 4.4 V 5.5 V - - 5.5 V 5.5 V 4.4 V 5.5 V
Minimum input voltage - 1.8 V 1.8 V 2.7 V - - 2.7 V 1.8 V 1.8 V 2.7 V
Nominal input voltage - 2.5 V 2.5 V 3 V - - 3 V 2.5 V 2.5 V 3 V
JESD-30 code - S-PDSO-N6 S-PDSO-N6 S-PDSO-N6 - - S-PDSO-N6 S-PDSO-N6 S-PDSO-N6 S-PDSO-N6
JESD-609 code - e3 e3 e3 - - e3 e3 e3 e3
length - 2 mm 2 mm 2 mm - - 2 mm 2 mm 2 mm 2 mm
Humidity sensitivity level - 1 1 1 - - 1 1 1 1
Number of functions - 1 1 1 - - 1 1 1 1
Number of terminals - 6 6 6 - - 6 6 6 6
Maximum operating temperature - 70 °C 70 °C 70 °C - - 70 °C 70 °C 70 °C 70 °C
Package body material - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY - - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code - HVSON HVSON HVSON - - HVSON HVSON HVSON HVSON
Package shape - SQUARE SQUARE SQUARE - - SQUARE SQUARE SQUARE SQUARE
Package form - SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE - - SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius) - 260 260 260 - - 260 260 260 260
Certification status - Not Qualified Not Qualified Not Qualified - - Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height - 0.8 mm 0.8 mm 0.8 mm - - 0.8 mm 0.8 mm 0.8 mm 0.8 mm
surface mount - YES YES YES - - YES YES YES YES
Switch configuration - DOUBLER INVERTER DOUBLER INVERTER DOUBLER INVERTER - - DOUBLER INVERTER DOUBLER INVERTER DOUBLER INVERTER DOUBLER INVERTER
Maximum switching frequency - 600 kHz 600 kHz 600 kHz - - 600 kHz 600 kHz 600 kHz 600 kHz
technology - CMOS CMOS CMOS - - CMOS CMOS CMOS CMOS
Temperature level - COMMERCIAL COMMERCIAL COMMERCIAL - - COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL
Terminal surface - Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) - - Matte Tin (Sn) Matte Tin (Sn) Tin (Sn) Matte Tin (Sn)
Terminal form - NO LEAD NO LEAD NO LEAD - - NO LEAD NO LEAD NO LEAD NO LEAD
Terminal pitch - 0.5 mm 0.5 mm 0.5 mm - - 0.5 mm 0.5 mm 0.5 mm 0.5 mm
Terminal location - DUAL DUAL DUAL - - DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature - 30 30 30 - - 30 30 30 30
width - 2 mm 2 mm 2 mm - - 2 mm 2 mm 2 mm 2 mm

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