LT8210

RECOMMENDED FOR NEW DESIGNS

100V VIN and VOUT Synchronous 4-Switch Buck‑Boost DC/DC Controller with PassThru

Data Sheet (Rev. B) Product Selection Table
Part Models
8
1ku List Price
Starting From $7.01
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Part Details

  • Pin-Selectable PassThru or Fixed Output CCM, DCM, Burst Mode® Operation
  • Programmable Non-Switching PassThru Window
  • 18μA PassThru Mode IQ with 99.9% Efficiency
  • VIN Range: 2.8V to 100V (4.5V for Start-Up)
  • VOUT Range: 1V to 100V
  • Reverse Input Protection to –40V
  • ±1.25% Output Voltage Accuracy (–40°C to 125°C)
  • ±3% Accurate Current Monitoring
  • ±5% Accurate Current Regulation
  • 10V Quad N-Channel MOSFET Gate Drivers
  • EXTVCC LDO Powers Drivers from VOUT/External Rail
  • ±20% Cycle-by-Cycle Inductor Current Limit
  • No Top MOSFET Refresh Noise in Buck or Boost
  • Fixed/Phase-Lockable Frequency: 80kHz to 400kHz
  • Spread Spectrum Frequency Modulation for Low EMI
  • Power Good Output Voltage/Overcurrent Monitor
  • Available in a 38-Lead TSSOP and 40-Lead (6mm x 6mm) QFN Packages
LT8210
100V VIN and VOUT Synchronous 4-Switch Buck‑Boost DC/DC Controller with PassThru
LT8210 Application Circuit LT8210-pc LT8210 Pin Configuration LT8210 Performance Graph
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 3

Design Note 1

Technical Articles 1

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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

  • LT8210
  • LT8210-1
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

DC2814A-A

LT8210 Demo Board | 8V to 40VIN, 80VIN Surge (60s), Operates Down to 3.5VIN after Start-Up, VOUT = 8V to 16V at 3A

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Product Details

Demonstration circuit 2814A-A is a high voltage, high efficiency synchronous buck-boost DC/DC converter with an input voltage range of 8V to 80V. After the part has started, the input voltage can run down to 3.5V. It can supply a 3A maximum load current with an output range of 8V to 16V. The demo board features the LT8210EUJ controller. The constant frequency current mode architecture allows a phase-lockable frequency of up to 400kHz, while an optional input or output current feedback loop provides support for applications such as battery charging. With a wide input range, wide output range, and seamless transfers between operation modes, the LT8210 is ideal for industrial, automotive, medical, military, and avionics applications. 

The converter has four modes of operation: burst, pulse skip, forced continuous mode, or pass-thru. Pass-thru is a feature that passes the input directly to the output when the input voltage is within a user programmable window. Switching losses drop to zero and efficiency is maximized. For input voltage above or below the pass-thru window, the buck or boost regulation loops maintain the output at the set maximum or minimum values, respectively. Reverse input protection is also implemented on this demo board. 

The available versions of the DC2814A are:

DC2814A-A: 8V to 40VIN, 80VIN Surge (60s), Operates Down to 3.5VIN after Start-Up, VOUT = 8V to 16V at 3A

DC2814A-B: 9V to 36VIN, 80VIN Surge (60s), VOUT = 24V to 36V at 2.5A

DC2814A-C: 26V to 80VIN, VOUT = 36V to 56V at 2A

eval board
schematic 1
schematic 2
schematic 3
DC2814A-C

LT8210 Demo Board | 26V to 80VIN, VOUT = 36V to 56V at 2A

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Product Details

Demonstration circuit 2814A-C is a high voltage, high efficiency synchronous buck-boost DC/DC converter with an input voltage range of 26V to 80V. It can supply a 2A maximum load current with an output range of 36V to 56V. The demo board features the LT8210EUJ controller. The constant frequency current mode architecture allows a phase-lockable frequency of up to 400kHz, while an optional input or output current feedback loop provides support for applications such as battery charging. With a wide input range, wide output range and seamless transfers between operation modes, the LT8210 is ideal for industrial, automotive, medical, military and avionics applications.

The converter has four modes of operation: burst, pulse skip, forced continuous mode, or pass-thru. Pass-thru is a feature that passes the input directly to the output when the input voltage is within a user programmable window. Switching losses drop to zero and efficiency is maximized. For input voltage above or below the pass-thru window the buck or boost regulation loops maintain the output at the set maximum or minimum values, respectively. Reverse input protection to –40V is also implemented on this demo board.

The available versions of the DC2814A are:

DC2814A-A: 8V to 40VIN, 80VIN Surge (60s), Operates Down to 3.5VIN after Start-Up, VOUT = 8V to 16V at 3A

DC2814A-B: 9V to 36VIN, 80VIN Surge (60s), VOUT = 24V to 36V at 2.5A

DC2814A-C: 26V to 80VIN, VOUT = 36V to 56V at 2A

eval board
schematic 4
schematic 5
schematic 6
DC2814A-B

LT8210 Demo Board | 9V to 36VIN, 80VIN Surge (60s), VOUT = 24V to 36V at 2.5A

Buy Now View Details

Product Details

Demonstration circuit 2814A-B is a high voltage, high efficiency synchronous buck-boost DC/DC converter with an input voltage range of 9V to 80V. It can supply a 2.5A maximum load current with an output range of 24V to 34V. The demo board features the LT8210EUJ controller. The constant frequency current mode architecture allows a phase-lockable frequency of up to 400kHz, while an optional input or output current feedback loop provides support for applications such as battery charging. With a wide input range, wide output range, and seamless transfers between operation modes, the LT8210 is ideal for industrial, automotive, medical, military, and avionics applications. 

The converter has four modes of operation: burst, pulse skip, forced continuous mode, or pass-thru. Pass-thru is a feature that passes the input directly to the output when the input voltage is within a user programmable window. Switching losses drop to zero and efficiency is maximized. For input voltage above or below the pass-thru window, the buck or boost regulation loops maintain the output at the set maximum or minimum values, respectively. Reverse input protection to –40V is also implemented on this demo board. 

The available versions of the DC2814A are:

DC2814A-A: 8V to 40VIN, 80VIN Surge (60s), Operates Down to 3.5VIN after Start-Up, VOUT = 8V to 16V at 3A

DC2814A-B: 9V to 36VIN, 80VIN Surge (60s), VOUT = 24V to 36V at 2.5A

DC2814A-C: 26V to 80VIN, VOUT = 36V to 56V at 2A
DC2814A-A
LT8210 Demo Board | 8V to 40VIN, 80VIN Surge (60s), Operates Down to 3.5VIN after Start-Up, VOUT = 8V to 16V at 3A
DC2814A-C
LT8210 Demo Board | 26V to 80VIN, VOUT = 36V to 56V at 2A
DC2814A-B DC2814A-B DC2814A-B
DC2814A-B
LT8210 Demo Board | 9V to 36VIN, 80VIN Surge (60s), VOUT = 24V to 36V at 2.5A
DC2814A-B DC2814A-B DC2814A-B

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