Datasheet Details
| Part number | LTC3857-1 |
|---|---|
| Manufacturer | Linear Technology (Analog Devices) |
| File Size | 423.71 KB |
| Description | Synchronous Step-Down Controller |
| Datasheet |
 LTC3857-1 Datasheet
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Description
The LTC®3857-1 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 850kHz.
Features
- n Low Operating IQ: 50μA (One Channel On) n Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 24V n Wide VIN Range: 4V to 38V n RSENSE or DCR Current Sensing n Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise n OPTI-LOOP® Compensation Minimizes COUT n Phase-Lockable Frequency (75kHz-850kHz) n Programmable Fixed Frequency (50kHz-900kHz) n Selectable Continuous, Pulse-Skipping or Low Ripple Burst Mode® Operation at Light Loads n Very Low Dropout Operation: 99% Duty.