Analog Devices LTC7813

Overview

Topology	Buck-Boost Converter
Input voltage	8-35 V
Output 1	5 V / 8 A
Output 2	24 V / 5 A
Output 3	12 V / 8 A

Description

The LTC®7813 is a high performance synchronousBoost+Buck DC/DC switching regulator controller thatdrives all N-channel power MOSFET stages. It containsindependent step-up (boost) and step-down (buck)controllers that can regulate two separate outputs or becascaded to regulate an output voltage from an inputvoltage that can be above, below, or equal to the outputvoltage. The LTC7813 operates from a wide 4.5V to 60Vinput supply range. When biased from the output of theboost regulator, the LTC7813 can operate from an inputsupply as low as 2.2V after start-up. The 34μA no-loadquiescent current (both channels on) extends operatingruntime in battery-powered systems

Features

Synchronous Boost and Buck Controllersnn When Cascaded, Allows VIN Above, Below, or Equalto Regulated VOUT of Up to 60Vnn Wide Bias Input Voltage Range: 4.5V to 60Vnn Output Remains in Regulation Through Input Dips(e.g. Cold Crank) Down to 2.2Vnn Adjustable Gate Drive Level 5V to 10V (OPTI-DRIVE)nn Low EMI with Low Input and Output Ripplenn Fast Output Transient Responsenn No External Bootstrap Diodes Requirednn High Light Load Efficiencynn Low Operating IQ: 29μA (One Channel On)nn Low Operating IQ: 34μA (Both Channels On)nn RSENSE or Lossless DCR Current Sensingnn Buck Output Voltage Range: 0.8V ≤ VOUT ≤ 60Vnn Boost Output Voltage Up 60Vnn Phase-Lockable Frequency (75kHz to 850kHz)nn Small 32-Pin 5mm × 5mm QFN Package

Typical applications

Automotive and Industrial Power Systems
High Power Battery Operated Systems

More information

Products

Order Code	Datasheet	Simulation	Downloads	Status	Product series	L(µH)	I_RP,40K(A)	I_SAT,10%(A)	I_SAT,30%(A)	R_DC(mΩ)	f_res(MHz)	Material	R_{DC max.}(mΩ)	L_R(µH)
7443320100	WE-HCC SMT High Current Cube Inductor, 1 µH, 34 A	Simulation	Downloads9 files EDA models: Components ZIP ALT WE-HCC (rev25a).IntLib \| 322.5 KB CDS Cadence_WE-HCC (rev25a).zip \| 3.8 MB EAG Eagle_WE-HCC (rev24b).lbr \| 55.5 KB KIC KiCad_WE-HCC (rev25b).zip \| 1.2 MB CAD files ZIP 3D 3D_WE-HCC-1210_FERRITE_744332xxxx_3D (rev1).pdf \| 641.2 KB IGS IGS_WE-HCC-1210_FERRITE_744332xxxx (rev1).igs \| 6.4 MB STP WE-HCC-1210_FERRITE (rev1).stp \| 2 MB Electric models ZIP PSP PSpice_WE-HCC (rev22a).zip \| 9.6 KB SCS Spectre_WE-HCC (rev24a).mod \| 11.4 KB Download all 9 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Product seriesWE-HCC SMT High Current Cube Inductor	Inductance1 µH	Performance Rated Current34 A	Saturation Current @ 10%30.6 A	Saturation Current @ 30%33.5 A	–	Self Resonant Frequency96 MHz	MaterialFerrite	DC Resistance2.5 mΩ	Rated Inductance0.9 µH
744325120	WE-HCI SMT Flat Wire High Current Inductor, 1.2 µH, 32.6 A	Simulation	Downloads9 files EDA models: Components ZIP ALT WE-HCI (rev25a).IntLib \| 1.1 MB CDS Cadence_WE-HCI (rev25a).zip \| 11.8 MB EAG Eagle_WE-HCI (rev25a).lbr \| 140.6 KB KIC KiCad_WE-HCI (rev25b).zip \| 2.7 MB ZUK Download_CadStar_WE-HCI (rev19a).zip \| 15.7 KB CAD files ZIP IGS WE-HCI_1050_744325 (rev1).igs \| 1.9 MB STP WE-HCI_1050_744325 (rev1).stp \| 602.1 KB Electric models ZIP PSP PSpice_WE-HCI (rev22a).zip \| 22.1 KB SCS Spectre_WE-HCI (rev24a).mod \| 26.8 KB Download all 9 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Product seriesWE-HCI SMT Flat Wire High Current Inductor	Inductance1.2 µH	Performance Rated Current32.6 A	Saturation Current @ 10%12 A	Saturation Current @ 30%25 A	DC Resistance1.8 mΩ	Self Resonant Frequency75 MHz	MaterialSuperflux	DC Resistance1.98 mΩ	Rated Inductance1 µH
744325240	WE-HCI SMT Flat Wire High Current Inductor, 2.4 µH, 18.6 A	Simulation	Downloads9 files EDA models: Components ZIP ALT WE-HCI (rev25a).IntLib \| 1.1 MB CDS Cadence_WE-HCI (rev25a).zip \| 11.8 MB EAG Eagle_WE-HCI (rev25a).lbr \| 140.6 KB KIC KiCad_WE-HCI (rev25b).zip \| 2.7 MB ZUK Download_CadStar_WE-HCI (rev19a).zip \| 15.7 KB CAD files ZIP IGS WE-HCI_1050_744325 (rev1).igs \| 1.9 MB STP WE-HCI_1050_744325 (rev1).stp \| 602.1 KB Electric models ZIP PSP PSpice_WE-HCI (rev22a).zip \| 22.1 KB SCS Spectre_WE-HCI (rev24a).mod \| 26.8 KB Download all 9 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Product seriesWE-HCI SMT Flat Wire High Current Inductor	Inductance2.4 µH	Performance Rated Current18.6 A	Saturation Current @ 10%6.9 A	Saturation Current @ 30%17 A	DC Resistance4.75 mΩ	Self Resonant Frequency67 MHz	MaterialSuperflux	DC Resistance5.225 mΩ	Rated Inductance1.8 µH
744325330	WE-HCI SMT Flat Wire High Current Inductor, 3.3 µH, 16.6 A	Simulation	Downloads9 files EDA models: Components ZIP ALT WE-HCI (rev25a).IntLib \| 1.1 MB CDS Cadence_WE-HCI (rev25a).zip \| 11.8 MB EAG Eagle_WE-HCI (rev25a).lbr \| 140.6 KB KIC KiCad_WE-HCI (rev25b).zip \| 2.7 MB ZUK Download_CadStar_WE-HCI (rev19a).zip \| 15.7 KB CAD files ZIP IGS WE-HCI_1050_744325 (rev1).igs \| 1.9 MB STP WE-HCI_1050_744325 (rev1).stp \| 602.1 KB Electric models ZIP PSP PSpice_WE-HCI (rev22a).zip \| 22.1 KB SCS Spectre_WE-HCI (rev24a).mod \| 26.8 KB Download all 9 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Product seriesWE-HCI SMT Flat Wire High Current Inductor	Inductance3.3 µH	Performance Rated Current16.6 A	Saturation Current @ 10%5 A	Saturation Current @ 30%15 A	DC Resistance5.9 mΩ	Self Resonant Frequency54 MHz	MaterialSuperflux	DC Resistance6.49 mΩ	Rated Inductance2.4 µH
7443551370	WE-HCI SMT Flat Wire High Current Inductor, 3.7 µH, 18.3 A	Simulation	Downloads9 files EDA models: Components ZIP ALT WE-HCI (rev25a).IntLib \| 1.1 MB CDS Cadence_WE-HCI (rev25a).zip \| 11.8 MB EAG Eagle_WE-HCI (rev25a).lbr \| 140.6 KB KIC KiCad_WE-HCI (rev25b).zip \| 2.7 MB ZUK Download_CadStar_WE-HCI (rev19a).zip \| 15.7 KB CAD files ZIP IGS WE-HCI_1365_7443551 (rev1).igs \| 1.7 MB STP WE-HCI_1365_7443551 (rev1).stp \| 514.9 KB Electric models ZIP PSP PSpice_WE-HCI (rev22a).zip \| 22.1 KB SCS Spectre_WE-HCI (rev24a).mod \| 26.8 KB Download all 9 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Product seriesWE-HCI SMT Flat Wire High Current Inductor	Inductance3.7 µH	Performance Rated Current18.3 A	Saturation Current @ 10%7 A	Saturation Current @ 30%16 A	DC Resistance4.9 mΩ	Self Resonant Frequency26 MHz	MaterialWE-PERM	DC Resistance5.39 mΩ	Rated Inductance2.6 µH
7443551470	WE-HCI SMT Flat Wire High Current Inductor, 4.7 µH, 14.9 A	Simulation	Downloads9 files EDA models: Components ZIP ALT WE-HCI (rev25a).IntLib \| 1.1 MB CDS Cadence_WE-HCI (rev25a).zip \| 11.8 MB EAG Eagle_WE-HCI (rev25a).lbr \| 140.6 KB KIC KiCad_WE-HCI (rev25b).zip \| 2.7 MB ZUK Download_CadStar_WE-HCI (rev19a).zip \| 15.7 KB CAD files ZIP IGS WE-HCI_1365_7443551 (rev1).igs \| 1.7 MB STP WE-HCI_1365_7443551 (rev1).stp \| 514.9 KB Electric models ZIP PSP PSpice_WE-HCI (rev22a).zip \| 22.1 KB SCS Spectre_WE-HCI (rev24a).mod \| 26.8 KB Download all 9 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Product seriesWE-HCI SMT Flat Wire High Current Inductor	Inductance4.7 µH	Performance Rated Current14.9 A	Saturation Current @ 10%6 A	Saturation Current @ 30%15 A	DC Resistance7 mΩ	Self Resonant Frequency30 MHz	MaterialWE-PERM	DC Resistance7.59 mΩ	Rated Inductance3.4 µH
7443320470	WE-HCC SMT High Current Cube Inductor, 4.7 µH, 14.9 A	Simulation	Downloads9 files EDA models: Components ZIP ALT WE-HCC (rev25a).IntLib \| 322.5 KB CDS Cadence_WE-HCC (rev25a).zip \| 3.8 MB EAG Eagle_WE-HCC (rev24b).lbr \| 55.5 KB KIC KiCad_WE-HCC (rev25b).zip \| 1.2 MB CAD files ZIP 3D 3D_WE-HCC-1210_FERRITE_744332xxxx_3D (rev1).pdf \| 641.2 KB IGS IGS_WE-HCC-1210_FERRITE_744332xxxx (rev1).igs \| 6.4 MB STP WE-HCC-1210_FERRITE (rev1).stp \| 2 MB Electric models ZIP PSP PSpice_WE-HCC (rev22a).zip \| 9.6 KB SCS Spectre_WE-HCC (rev24a).mod \| 11.4 KB Download all 9 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Product seriesWE-HCC SMT High Current Cube Inductor	Inductance4.7 µH	Performance Rated Current14.9 A	Saturation Current @ 10%15.6 A	Saturation Current @ 30%17.1 A	–	Self Resonant Frequency43 MHz	MaterialFerrite	DC Resistance7.9 mΩ	Rated Inductance3.2 µH
7443551730	WE-HCI SMT Flat Wire High Current Inductor, 7.3 µH, 16.5 A	Simulation	Downloads9 files EDA models: Components ZIP ALT WE-HCI (rev25a).IntLib \| 1.1 MB CDS Cadence_WE-HCI (rev25a).zip \| 11.8 MB EAG Eagle_WE-HCI (rev25a).lbr \| 140.6 KB KIC KiCad_WE-HCI (rev25b).zip \| 2.7 MB ZUK Download_CadStar_WE-HCI (rev19a).zip \| 15.7 KB CAD files ZIP IGS WE-HCI_1365_7443551 (rev1).igs \| 1.7 MB STP WE-HCI_1365_7443551 (rev1).stp \| 514.9 KB Electric models ZIP PSP PSpice_WE-HCI (rev22a).zip \| 22.1 KB SCS Spectre_WE-HCI (rev24a).mod \| 26.8 KB Download all 9 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Product seriesWE-HCI SMT Flat Wire High Current Inductor	Inductance7.3 µH	Performance Rated Current16.5 A	Saturation Current @ 10%5.5 A	Saturation Current @ 30%12 A	DC Resistance5.9 mΩ	Self Resonant Frequency28 MHz	MaterialWE-PERM	DC Resistance6.49 mΩ	Rated Inductance5 µH

IC manufacturers (103)

Low IQ, 60V Synchronous Boost+Buck Controller