The pass-through LT8210 1000 V DC/DC controller routes V IN directly to V OUT without switching noise or losses within the user-set pass-through window. Its ultra-low quiescent current reduces no-load system current to below 50 μA and provides higher light-load efficiency in shoot-through and burst-mode operation. Pass-through allows higher output current/power, especially at higher V IN, reduces power dissipation, and improves efficiency especially at minimum V IN. Low noise operation in all modes provides no switching/EMI when operating in pass-through mode, and direct inductance detection and spread spectrum modulation improve EMI during switching.

feature

Pin-Selectable Pass-Through or Fixed Output CCM, DCM and Burst Mode Operation

Programmable non-switching pass-through window

99.9% IQ efficiency in 18 μA pass-through mode

V IN range: 2.8 V to 100 V (4.5 V at startup)

VOUT range: 1 V to 100 V

Reverse input protection: -40 V

Output Voltage Accuracy (-40°C to +125°C): ±1.25%

Accurate current monitoring: ±3%

Precise current regulation: ±5%

10 V Quad N-Channel MOSFET Gate Driver

EXTV CC LDO powers driver via V OUT/external supply

Cycle-by-cycle inductor current limit: ±20%

No top MOSFET refresh noise in buck or boost mode

Fixed/phase locked frequency: 80 kHz to 400 kHz

Spread Spectrum Frequency Modulation Reduces EMI

Power good output voltage/overcurrent monitoring

Available in 38-lead TSSOP and 40-lead (6 mm x 6 mm) QFN packages

Application field

Automotive, Industrial, Telecom and Avionics Systems

Car start/stop and emergency call application

ISO 7637, ISO 16750, MIL-1275 and DO-160 applications