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DC1709A Programming Board for LTC3880 and LTC3880-1 DC/DC Controllers

The DC1709A is a programming board designed to verify and program the internal EEPROM of the LTC3880 and LTC3880-1 dual-phase DC/DC controllers using LTpowerPlay software.

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Overview

The DC1709A demonstration circuit is a dedicated hardware platform for programming and verifying the internal EEPROM of Linear Technology's LTC3880 and LTC3880-1 dual-phase DC/DC controllers with digital power management. The board features a clamshell-style QFN socket (SKT1) for non-solder IC insertion, allowing users to load factory defaults or custom configuration files. The system integrates an LTC4361 for overvoltage and overcurrent protection and requires a DC1613A or DC1427A USB-to-I2C/PMBus controller to interface with a PC running LTpowerPlay software. It supports full telemetry readback and configuration of parameters including voltage, current limits, sequencing, and fault logging.

Use Cases

  • Programming internal EEPROM for LTC3880/LTC3880-1 controllers
  • Verifying factory default configuration settings
  • Customizing digital power management parameters for prototyping
  • Batch verification of IC configuration before assembly
  • Development of PMBus-compliant power systems

Topics

LTC3880
LTC3880-1
DC1709A
EEPROM programming
PMBus
I2C
Digital Power Management
LTpowerPlay
DC/DC Controller
Programming Socket

Referenced Parts

06033C103KAT2A

AVX

CAP., CER, 10000pF, 25V, 10%, X7R, 0603, OPT. AVX, 06033C103KAT2A

0603YC104KAT2A

AVX

CAP., 0.10μF, 10%, 16V, X7R, 0603 AVX, 0603YC104KAT2A

TAJC105K050RNJ

AVX

CAP., TANTALUM, 1μF, 50V, 10%, SMD AVX, TAJC105K050RNJ

24LC025-I/SN

Microchip

IC., EEPROM, 2KBIT, 400kHz, 8SOIC MICROCHIP, 24LC025-I/SN

87831-1420

Molex

CONN, HEADER, 14POS, 2mm, VERT GOLD MOLEX, 87831-1420

LN1271RTR

Panasonic

LED, RED S-TYPE GULL WING, 2.03V, SMD PANASONIC, LN1271RTR

LN1371SGTRP

Panasonic

LED, GREEN S-TYPE GULL WING 2.03V, SMD PANASONIC, LN1371SGTRP

TMM-103-02-L-S

Samtec

HEADER, 0.079, SINGLE ROW, 3-PIN SAMTEC, TMM-103-02-L-S

RL1220S-R50-F

Susumu

RES., 0.50Ω, 1/3W, 1%, 0805, SMD SUSUMU, RL1220S-R50-F

C3216X5R0J475K

TDK

CAP., 4.7μF, 6.3V, CERAMIC, X5R, 1206 TDK, C3216X5R0J475K

CRCW08051K00FKEA

Vishay

RES., 1.00kΩ, 1/8W, 1%, 0805, SMD VISHAY, CRCW08051K00FKEA

SI1470DH-T1-E3

Vishay

MOSFET, N-CH, 30V, 5.1A, SC70-6 VISHAY, Si1470DH-T1-E3

TP0101K-T1-E3

Vishay

MOSFET P-CH, 20V, 580mA, SOT23-3 VISHAY, TP0101K-T1-E3

RC0805FR-0710KL

Yageo

RES., 10.0kΩ, 1/10W, 1%, 0805, SM YAGEO, RC0805FR-0710KL

RC0805FR-071RL

Yageo

RES., 1.0Ω, 1/8W, 1%, 0805, SMD YAGEO, RC0805FR-071RL

1206YZ105KAT

AVX

CAP., 1μF, 16V, CERAMIC, X7R, 1206 AVX, 1206YZ105KAT

98414-G06-12ULF

FCI Connector Corp.

CONN, HEADER, 12POS, 2mm, 2ROW GOLD FCI CONNECTOR CORP., 98414-G06-12ULF

2N7002

Fairchild Semiconductor

MOSFET N-CH, 60V, 115mA, SOT-23 FAIRCHILD SEMICONDUCTOR, 2N7002

8831

Keystone

SUPPORT POST NYLON SNAP-IN, 1/4" KEYSTONE, 8831

LTC3880

Linear Technology

The DC1709A is shipped with a LTC3880 installed in the clamshell style programming socket.

LTC3880EUJ

Linear Technology

LTC3880EUJ Programming Board for Dual-/ Two-Phase DC/DC Controller

LTC4361CTS8-2#PBF

Linear Technology

IC., OVERVOLTAGE/OVERCURRENT PROTECTION CONTROLLER LINEAR TECHNOLOGY, LTC4361CTS8-2#PBF

40QN50S16060-B

Plastronics

6×6 QFN FLAT LEAD LIDDED THROUGH-HOLE SOCKET PLASTRONICS, 40QN50S16060-B

RC0805FR-074K99L

Yageo

RES., 4.99kΩ, 1/8W, 1%, 0805, SMD YAGEO, RC0805FR-074K99L

LTC3880-1

Linear Technology

circuitry needed to program and verify the EEPROM within the LTC ® 3880 and LTC3880-1

8SOIC

Microchip

20 1 U2 IC., EEPROM, 2KBIT, 400kHz, 8SOIC MICROCHIP, 24LC025-I/SN

3-PIN

Samtec

21 2 JP1, JP2 HEADER, 0.079, SINGLE ROW, 3-PIN SAMTEC, TMM-103-02-L-S

SC70-6

Vishay

11 1 Q5 MOSFET, N-CH, 30V, 5.1A, SC70-6 VISHAY, Si1470DH-T1-E3

SOT23-3

Vishay

9 3 Q1, Q2, Q3 MOSFET P-CH, 20V, 580mA, SOT23-3 VISHAY, TP0101K-T1-E3

DC1709A Programming Board for LTC3880 and LTC3880-1 DC/DC Controllers | Design Resources