LTC3807
Info : RECOMMENDED FOR NEW DESIGNS
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LTC3807

Low IQ, Synchronous Step-Down Controller with 24V Output Voltage Capability

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 16
1ku List Price Starting From $2.78
Features
  • Wide VIN Range: 4V to 38V (40V Abs Max)
  • Low Operating IQ: 50μA
  • Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 24V
  • RSENSE or DCR Current Sensing
  • Phase-Lockable Frequency (75kHz to 750kHz)
  • Programmable Fixed Frequency (50kHz to 900kHz)
  • Selectable Continuous, Pulse-Skipping or Low Ripple Burst Mode® Operation at Light Load
  • Selectable Current Limit
  • Very Low Dropout Operation: 99% Duty Cycle
  • Adjustable Output Voltage Soft-Start or Tracking
  • Power Good Output Voltage Monitor
  • Output Overvoltage Protection
  • Low Shutdown IQ: 14μA
  • Internal LDO Powers Gate Drive from VIN or EXTVCC
  • No Current Foldback During Start-Up
  • Small 20-Pin 3mm × 4mm QFN and TSSOP Packages
Additional Details
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The LTC3807 is a high performance step-down switching regulator DC/DC controller that drives an all N-channel synchronous power MOSFET stage. A constant frequency current mode architecture allows a phase-lockable frequency of up to 750kHz.

The 50μA no-load quiescent current extends operating run time in battery-powered systems. OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3807 features a precision 0.8V reference and power good output indicator. A wide 4V to 38V input supply range encompasses a wide range of intermediate bus voltages and battery chemistries. The output voltage of the LTC3807 can be programmed between 0.8V to 24V.

The TRACK/SS pin ramps the output voltages during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. The PLLIN/MODE pin selects among Burst Mode operation, pulse-skipping mode, or continuous conduction mode at light loads.

Applications

  • Automotive Always-On Systems
  • Battery Powered Digital Devices
  • Distributed DC Power Systems
Part Models 16
1ku List Price Starting From $2.78

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Documentation

Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

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Apr 6, 2022

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Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL

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Jul 31, 2020

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Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

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Apr 6, 2022

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Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL

LTC3807EFE#PBF

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Jul 31, 2020

- 20_0245

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Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

LTC3807EFE#PBF

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC2221A

LTC3807EFE Demo Board | Synchronous Buck, 16V ≤ VIN ≤ 38V; VOUT = 12V @ 15A

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DC2221A

LTC3807EFE Demo Board | Synchronous Buck, 16V ≤ VIN ≤ 38V; VOUT = 12V @ 15A

LTC3807EFE Demo Board | Synchronous Buck, 16V ≤ VIN ≤ 38V; VOUT = 12V @ 15A

Product Detail

Demonstration circuit 2221A is a low quiescent current, synchronous buck converter featuring the LTC3807EFE. This demo board converts a 16V to 38V input voltage to a 12V at 15A output. The main features of this board include an internal LDO for gate drive power from VIN or EXTVCC, RUN and PGOOD pins, a mode selector that allows the converter to run in constant current mode (CCM), pulse-skipping or Burst Mode® operation, and selectable current limit. The DC2221A supports an adjustable output voltage, soft-start and tracking. The wide input voltage range of 16V to 38V is suitable for automotive and distributed DC power systems where low quiescent current is important.

Tools & Simulations

Tools & Simulations 2

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.

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