The LTC3867EUF#PBF is a current mode synchronous step-down switching regulator controller that drives all N-channel power MOSFET stages. Output voltage transient excursions are minimized by use of a nonlinear control architecture to eliminate clock latency issues.
The maximum current sense voltage is programmable from 30mV to 75mV, allowing the use of either a discrete sense resistor or the inductor DCR as the sensing element. Programmable DCR temperature compensation allows constant current limit regardless of inductor temperature. Programmable inductor temperature-based thermal shutdown protects the power components from thermal stress. Soft recovery from output shorts or overcurrent minimizes output overshoot.
The LTC3867EUF#PBF features a precision 0.6V reference and can regulate output voltages up to 14V from a wide 4V to 38V input supply range. The LTC3867EUF#PBF includes a high speed differential remote sense amplifier. Burst Mode® operation, continuous and pulse-skipping modes are supported. The LTC3867EUF#PBF is available in a 24-lead (4mm × 4mm) QFN package.
Feature
- VIN Range: 4V to 38V
- VOUT Range: 0.6V to 14V
- Nonlinear Control Architecture Minimizes Output Transient Excursions (Optional)
- Programmable DCR Temperature Compensation
- ±0.75% 0.6V Voltage Reference
- Fixed Frequency Range of 200kHz to 1.2MHz
- PLL Frequency Synchronization
- RSENSE or DCR Current Sensing
- Differential Remote Output Voltage Sense
- Supports Smooth Start-Up into Pre-Biased Outputs
- Programmable Soft-Start or VOUT Tracking
- Hiccup Mode/Soft Recovery from Output Overcurrent
- 24-Lead (4mm × 4mm) QFN Package
Applications
- Automotive Systems
- Telecom Systems
- Industrial Equipment
- Distributed DC Power Systems
(Picture: Pinout)
