LTC3896
RECOMMENDED FOR NEW DESIGNS150V Low IQ, Synchronous Inverting DC/DC Controller
- Part Models
- 6
- 1ku List Price
- Starting From $7.10
Overview
- 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
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
Documentation
Data Sheet 1
User Guide 1
Application Note 1
Design Note 1
Technical Articles 2
Product Selector Card 2
Rarely Asked Question 1
Analog Dialogue 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC3896EFE#PBF | 38-Lead TSSOP w/ EP | ||
| LTC3896EFE#TRPBF | 38-Lead TSSOP w/ EP | ||
| LTC3896HFE#PBF | 38-Lead TSSOP w/ EP | ||
| LTC3896HFE#TRPBF | 38-Lead TSSOP w/ EP | ||
| LTC3896IFE#PBF | 38-Lead TSSOP w/ EP | ||
| LTC3896IFE#TRPBF | 38-Lead TSSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
May 18, 2026 - 26_0072 Epoxy Change for Select TSSOP Products |
||
| LTC3896EFE#PBF | PRODUCTION | |
| LTC3896EFE#TRPBF | PRODUCTION | |
| LTC3896HFE#PBF | PRODUCTION | |
| LTC3896HFE#TRPBF | PRODUCTION | |
| LTC3896IFE#PBF | PRODUCTION | |
| LTC3896IFE#TRPBF | PRODUCTION | |
|
Feb 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper |
||
| LTC3896EFE#PBF | PRODUCTION | |
| LTC3896EFE#TRPBF | PRODUCTION | |
| LTC3896IFE#PBF | PRODUCTION | |
| LTC3896IFE#TRPBF | PRODUCTION | |
|
Apr 6, 2022 - 22_0068 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 | PRODUCTION | |
| LTC3896IFE#TRPBF | PRODUCTION | |
|
Apr 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper |
||
| LTC3896HFE#PBF | PRODUCTION | |
| LTC3896HFE#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareHardware Ecosystem
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTC3896
LTpowerCAD 1
Design tools for the following parts are available in LTpowerCAD:
- LTC3896
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.
LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.
Evaluation Kits
LTC3896EFE Demo Board | Sync Inverting Controller, 7V ≤ VIN ≤ 72V; VOUT = -12V @ 5A