LTC3899

RECOMMENDED FOR NEW DESIGNS

60V Low I_Q, Triple Output, Buck/Buck/Boost Synchronous Controller with PassThru

Data Sheet (Rev. B) Product Selection Table

Part Models: 24
1ku List Price: Starting From $5.90

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Part Details

Dual Buck Plus Single Boost Synchronous Controllers
Wide Bias Input Voltage Range: 4.5V to 60V
Outputs Remain in Regulation Through Cold Crank Down to a 2.2V Input Supply Voltage
Buck and Boost Output Voltages Up to 60V
Adjustable Gate Drive Level 5V to 10V (OPTI-DRIVE)
No External Bootstrap Diodes Required
Low Operating I_Q: 29μA (One Channel On)
100% Duty Cycle for Boost Synchronous MOSFET

Phase-Lockable Frequency (75kHz to 850kHz)
Programmable Fixed Frequency (50kHz to 900kHz)
Very Low Dropout Operation: 99% Duty Cycle (Bucks)
Low Shutdown I_Q: 3.6μA
Fixed or Adjustable Boost Output Voltage Saves I_Q
Small 38-Lead 5mm × 7mm QFN and TSSOP Packages
AEC-Q100 Qualified for Automotive Applications

Part Models: 24
1ku List Price: Starting From $5.90

Documentation

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
LTC3899EFE#PBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899EFE#TRPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899EUHF#PBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899EUHF#TRPBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899HFE#PBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899HFE#TRPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899HFE#WPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899HFE#WTRPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899HUHF#PBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899HUHF#TRPBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899HUHF#WPBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899HUHF#WTRPBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899IFE#PBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899IFE#TRPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899IFE#WPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899IFE#WTRPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899IUHF#PBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899IUHF#TRPBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899IUHF#WPBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899IUHF#WTRPBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899MPFE#PBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899MPFE#TRPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899MPUHF#PBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3899MPUHF#TRPBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL
		PCN22_0068_Form Material_Report Delta Qualification Matrix
LTC3899EFE#PBF	PRODUCTION
LTC3899EFE#TRPBF	PRODUCTION
LTC3899HFE#PBF	PRODUCTION
LTC3899HFE#TRPBF	PRODUCTION
LTC3899IFE#PBF	PRODUCTION
LTC3899IFE#TRPBF	PRODUCTION
LTC3899MPFE#PBF	PRODUCTION
LTC3899MPFE#TRPBF	PRODUCTION
Jul 31, 2020 - 20_0245 Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)
		PCN20_0245_Form Material_Report Delta Qualification Matrix Other Qualification Results Summary
LTC3899EFE#PBF	PRODUCTION
LTC3899EFE#TRPBF	PRODUCTION
LTC3899EUHF#PBF	PRODUCTION
LTC3899EUHF#TRPBF	PRODUCTION
LTC3899HFE#PBF	PRODUCTION
LTC3899HFE#TRPBF	PRODUCTION
LTC3899HUHF#PBF	PRODUCTION
LTC3899HUHF#TRPBF	PRODUCTION
LTC3899IFE#PBF	PRODUCTION
LTC3899IFE#TRPBF	PRODUCTION
LTC3899IUHF#PBF	PRODUCTION
LTC3899IUHF#TRPBF	PRODUCTION
LTC3899MPFE#PBF	PRODUCTION
LTC3899MPFE#TRPBF	PRODUCTION
LTC3899MPUHF#PBF	PRODUCTION
LTC3899MPUHF#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Parts	Product Life Cycle	Description
High Voltage Hot Swap Controllers 1
LTC4364	RECOMMENDED FOR NEW DESIGNS	Surge Stopper with Ideal Diode

Tools & Simulations

LTspice 1

LTC3899 - Step-Down (Buck) Regulators

Models for the following parts are available in LTspice:

LTC3899

LTpowerCAD 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.

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

LTC3899EFE Demo Board | Triple Buck/Buck/Boost Controller, VOUT3 Powers VOUT1/VOUT2; 2.5V ≤ VIN ≤ 60V; VOUT1 = 5V @ 5A, VOUT2 = 8.5V @ 3A, VOUT3 = 10V @ 5.5A

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Product Details

Demonstration circuit 1898A is a triple output synchronous step-up/dual step-down supply featuring the LTC3899EFE. The circuit is using a drop-in layout: the main buck circuit components fit in an area of ¾˝ × 1½˝, while the main boost circuit area is ¾˝ × 1¾˝. The package style for the LTC3899EFE is a 38-pin exposed pad TSSOP package.