Power by Linear / Analog Devices’ LTC7810HLXE#PBF is a high performance dual step-down DC/DC switching regulator controller. This controller drives all N-channel synchronous power MOSFET stages that can operate from voltages up to 140 V. A constant frequency current mode architecture allows a phase-lockable frequency of up to 720 kHz. The low no-load quiescent current extends operating run time in battery-powered systems. The controller features a precision 1 V reference, enabling the output voltage to be programmed from 1 V to 60 V. The gate drive voltage for the LTC7810HLXE#PBF can be programmed to 6 V, 8 V, or 10 V to allow the use of logic-level or standard-threshold FETs and to maximize efficiency. This device has additional features of spread spectrum operation which significantly reduces the peak radiated and conducted noise on both the input and output supplies, making it easier to comply with electromagnetic interference (EMI) standards. The LTC7810HLXE#PBF is ideal for industrial, telecom, and transportation solutions.
Feature
- Wide VIN Range: 4.5V to 140V (150V Abs Max)
- Wide Output Voltage Range: 1V ≤ VOUT ≤ 60V
- Low Operating IQ: 16μA (48VIN to 12VOUT and 3.3VOUT)
- Adjustable Gate Drive Level Up to 10V
- Optional Spread Spectrum Operation
- Very Low Dropout: 100% Duty Cycle Operation
- Low IQ in Dropout: 78µA (One Channel On)
- RSENSE or Inductor DCR Current Sensing
- Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise
- Phase-Lockable Frequency (75kHz to 720kHz)
- Programmable Fixed Frequency (50kHz to 750kHz)
- Selectable Continuous, Pulse-Skipping, or Low Ripple Burst Mode® Operation at Light Loads
- Onboard LDO or External NMOS LDO for DRVCC
- EXTVCC LDO Powers Drivers from VOUT
- Programmable Input Overvoltage Lockout
- 48-Lead (7mm × 7mm) eLQFP Package
Applications
- Automotive and Transportation
- Industrial and Telecommunications
- Military/Avionics
