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reference designLT8491 | Demoboard DC2703A-A-KIT

Analog Devices LT8491 | Demoboard DC2703A-A-KIT

High Voltage Buck-Boost Battery Charge Controller with Maximum Power Point Tracking (MPPT) and I2C

Overview

TopologyBuck-Boost Converter
Input voltage17-54 V
Output 134 V / 16.6 A

Description

The DC2703A-A-KIT contains the DC2703A (LT8491demo board) and DC1613A (USB-to-I2C controller). Together they provide a high performance buck-boost battery charger converter with an I2C interface. The LT8491 implements a maximum power point tracking (MPPT) function and flexible charging profiles, suitable for most battery types such as flooded and sealed lead acid batteries and Li-Ion batteries. A Microsoft Windows-Based GUI (Graphical User Interface) application called “simpleLT8491” is provided which can be downloaded

Features

  • VIN Range: 6V to 80V
  • VB AT Range: 1.3V to 80V
  • Single Inductor Allows VIN Above, Below, or Equal to VB AT
  • Automatic MPPT for Solar Powered Charging
  • Automatic Temperature CompensationnI2C Telemetry and Configuration
  • Internal EEPROM for Configuration Storage
  • Operation from Solar Panel or DC Supply
  • Four Integrated Feedback Loops
  • Synchronizable Fixed Frequency: 100kHz to 400kHz
  • 64-Lead (7mm × 11mm × 0.75mm) QFN Package

Typical applications

  • The DC2703A-A-KIT demo board is configured for 17Vto 54V input voltage range and the power source can be a solar panel with 36 to 72 cells (up to 200W)
  • High Voltage Buck-Boost Battery Charge Controller with Maximum Power Point Tracking (MPPT) and I2C

More information

All technical functions in detail

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
C
Tol. C
VR(V (DC))
Size
Operating Temperature
DF(%)
RISO
Ceramic Type
L(mm)
W(mm)
Fl(mm)
Packaging
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC max.(mΩ)
fres(MHz)
Wire Type
Pins
Version
Type
Mount
IR(A)
H(mm)
Operation Force(g)
Electrical Life(Cycles)
Actuator Color
Washable
Vaporphase process
SamplesAvailability & Sample
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885012208106
SPECWCAP-CSGP MLCCs 100 V(DC), 1 nF, ±10%
Simu­lation
Availability
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 100 V(DC)
Capacitance1 nF
Capacitance±10% 
Rated Voltage100 V (DC)
Size1206 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length3.2 mm
Width1.6 mm
Pad Dimension0.6 mm
Packaging7" Tape & Reel 
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Height0.8 mm
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885012206086
SPECWCAP-CSGP MLCCs 50 V(DC), 3.3 nF, ±10%
Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 50 V(DC)
Capacitance3.3 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Height0.8 mm
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885012206038
SPECWCAP-CSGP MLCCs 16 V(DC), 4.7 nF, ±10%
Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 16 V(DC)
Capacitance4.7 nF
Capacitance±10% 
Rated Voltage16 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor3.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Height0.8 mm
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885012206088
SPECWCAP-CSGP MLCCs 50 V(DC), 6.8 nF, ±10%
Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 50 V(DC)
Capacitance6.8 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Height0.8 mm
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885012206114
SPECWCAP-CSGP MLCCs 100 V(DC), 10 nF, ±10%
Simu­lation
Availability
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 100 V(DC)
Capacitance10 nF
Capacitance±10% 
Rated Voltage100 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Height0.8 mm
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885012206045
SPECWCAP-CSGP MLCCs 16 V(DC), 68 nF, ±10%
Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 16 V(DC)
Capacitance68 nF
Capacitance±10% 
Rated Voltage16 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor3.5 %
Insulation Resistance7.4 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Height0.8 mm
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885012206048
SPECWCAP-CSGP MLCCs 16 V(DC), 220 nF, ±10%
Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 16 V(DC)
Capacitance220 nF
Capacitance±10% 
Rated Voltage16 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor5 %
Insulation Resistance2.3 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Height0.8 mm
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885012206050
SPECWCAP-CSGP MLCCs 16 V(DC), 470 nF, ±10%
Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 16 V(DC)
Capacitance470 nF
Capacitance±10% 
Rated Voltage16 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor5 %
Insulation Resistance1.1 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Height0.8 mm
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7443641000
SPECWE-HCF SMT High Current Inductor, –, –

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-HCF SMT High Current Inductor
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Size2818 
Operating Temperature -40 °C up to +125 °C
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Length27 mm
Width28 mm
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Inductance10 µH
Performance Rated Current34.95 A
Saturation Current @ 10%32.6 A
Saturation Current @ 30%37 A
DC Resistance2.64 mΩ
Self Resonant Frequency13 MHz
Wire TypeFlat 
Pins2 
VersionSMT 
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MountSMT 
Rated Current35 A
Height18.5 mm
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434123050816
SPECWS-TASV J-Bend SMT Tact Switch 6.0x3.5 mm, –, –
Simu­lation–
Availability
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Downloads6 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWS-TASV J-Bend SMT Tact Switch 6.0x3.5 mm
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Rated Voltage12 V (DC)
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Operating Temperature -40 °C up to +85 °C
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Insulation Resistance100 MΩ
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PackagingTape and Reel 
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Rated Current0.05 A
Height5 mm
Operation Force160 g
Electrical Life50000 Cycles
Actuator ColorBlack 
WashableNo 
Vaporphase processnot specified 
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61200821621
SPECWR-BHD 2.54 mm Male, –, –

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

Simu­lation–
Availability
–
Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-BHD 2.54 mm Male
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Operating Temperature -40 °C up to +105 °C
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Insulation Resistance1000 MΩ
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Length17.82 mm
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PackagingTray 
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Pins8 
VersionLow Profile 
TypeStraight 
MountTHT 
Rated Current3 A
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