LTC3896
Info : RECOMMENDED FOR NEW DESIGNS
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LTC3896

150V Low IQ, Synchronous Inverting DC/DC Controller

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 6
1ku List Price Starting From $5.61
Features
  • Wide VIN + |VOUT| Range: 4V to 140V (150V Abs Max)
  • Wide Output Voltage Range: –60V to –0.8V
  • Ground-Referenced Control / Interface Pins
  • Adjustable Gate Drive Level 5V to 10V (OPTI-DRIVE)
  • Integrated Bootstrap Diode
  • Low Operating IQ: 40μA (Shutdown = 10μA)
  • Selectable Gate Drive UVLO Thresholds
  • Onboard LDO or External NMOS LDO for DRVCC
  • EXTVCC LDO Powers Drivers from Output
  • Phase-Lockable Frequency (75kHz to 850kHz)
  • Programmable Fixed Frequency (50kHz to 900kHz)
  • Selectable Continuous, Pulse-Skipping or Low Ripple Burst Mode® Operation at Light Loads
  • Adjustable Burst Clamp and Current Limit
  • Power Good Output Voltage Monitor
  • Programmable Input Overvoltage Lockout
  • 38-Lead TSSOP High Voltage Package
Additional Details
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The LTC3896 is a high performance inverting DC/DC switching regulator controller that drives an all N-channel synchronous power MOSFET stage. It converts a wideranging positive input voltage source to a regulated negative output that can be as much as 60V below ground. The input can operate from a voltage as low as 4V and as high as 140V – |VOUT|.

The LTC3896 contains true ground-referenced RUN, PLLIN and PGOOD pins, eliminating the need for external discrete level-shifting components to interface with the LTC3896.

A constant frequency current mode architecture allows a phase-lockable frequency of up to 850kHz. The low 40μA 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 LTC3896 features a precision 0.8V reference and power good output indicator. The soft-start (SS) pin ramps the output voltage during start-up.

Applications

  • Automotive and Industrial Power Systems
  • Telecommunications Power Supplies
  • Distributed Power Systems
Part Models 6
1ku List Price Starting From $5.61

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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LTC3896IFE#PBF
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Product Lifecycle

PCN

Apr 6, 2022

- 22_0068

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

LTC3896EFE#PBF

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Filter by Model

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Product Lifecycle

PCN

Apr 6, 2022

- 22_0068

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

LTC3896EFE#PBF

PRODUCTION

LTC3896EFE#TRPBF

PRODUCTION

LTC3896HFE#PBF

PRODUCTION

LTC3896HFE#TRPBF

PRODUCTION

LTC3896IFE#PBF

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC2447A

LTC3896EFE Demo Board | Sync Inverting Controller, 7V ≤ VIN ≤ 72V; VOUT = -12V @ 5A

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DC2447A

LTC3896EFE Demo Board | Sync Inverting Controller, 7V ≤ VIN ≤ 72V; VOUT = -12V @ 5A

LTC3896EFE Demo Board | Sync Inverting Controller, 7V ≤ VIN ≤ 72V; VOUT = -12V @ 5A

Product Detail

Demonstration circuit 2447A is a high voltage, high efficiency synchronous inverting converter featuring the LTC3896. This demo board has a wide input voltage range from 7V to 72V and produces a –12V output voltage.


The DC2447A is capable of delivering up to 5A of output current. Note that the thermal stress increases at lower input voltages due to increased input current.

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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