Datasheet Details
| Part number | LTC3827 |
|---|---|
| Manufacturer | Linear Technology (now Analog Devices) |
| File Size | 449.89 KB |
| Description | 2-Phase Synchronous Step-Down Controller |
| Datasheet | LTC3827_LinearTechnology.pdf |
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Overview: LTC3827 Low IQ, Dual, 2-Phase Synchronous Step-Down Controller.
| Part number | LTC3827 |
|---|---|
| Manufacturer | Linear Technology (now Analog Devices) |
| File Size | 449.89 KB |
| Description | 2-Phase Synchronous Step-Down Controller |
| Datasheet | LTC3827_LinearTechnology.pdf |
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|
|
n Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 10V n Low Operating IQ: 80μA (One Channel On) n Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise n OPTI-LOOP® Compensation Minimizes COUT n ±1% Output Voltage Accuracy n Wide VIN Range: 4V to 36V Operation n Phase-Lockable Fixed Frequency 140kHz to 650kHz n Selectable Continuous, Pulse Skipping or Low Ripple Burst Mode® Operation at Light Loads n Dual N-Channel MOSFET Synchronous Drive n Very Low Dropout Operation: 99% Duty Cycle n Adjustable Output Voltage Soft-Start or Tracking n Output Current Foldback Limiting n Power Good Output Voltage Monitor n Output Overvoltage Protection n Low Shutdown IQ: 8μA n Internal LDO Powers Gate Drive from VIN or VOUT n Small 5mm × 5mm QFN Package APPLICATIONS n Automotive Systems n Battery-Operated Digital Devices n Distributed DC Power Systems The LTC®3827 is a high performance dual step-down switching regulator controller that drives all N-channel synchronous power MOSFET stages.
A constant frequency current mode architecture allows a phase-lockable frequency of up to 650kHz.
Power loss and noise due to the ESR of the input capacitor ESR are minimized by operating the two controller output stages out of phase.
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