LTC3834-1
LTC3834-1 is Synchronous Step-Down Controller manufactured by Linear Technology.
30μA IQ Synchronous Step-Down Controller
Features
- Wide Output Voltage Range: 0.8V V OUT 10V
- Low Operating IQ: 30μA
- OPTI-LOOP® pensation Minimizes COUT
- ±1% Output Voltage Accuracy
- Wide VIN Range: 4V to 36V
- Phase-Lockable Fixed Frequency 140k Hz to 650k Hz
- Dual N-Channel MOSFET Synchronous Drive
- Very Low Dropout Operation: 99% Duty Cycle
- Adjustable Output Voltage Soft-Start or Tracking
- Output Current Foldback Limiting
- Output Overvoltage Protection
- Low Shutdown IQ: 4μA
- Selectable Continuous, Pulse-Skipping or
Burst Mode® Operation at Light Loads
- Small 16-Lead Narrow SSOP or 5mm × 3mm
DFN Package
U APPLICATIO S
- Automotive Systems
- Tele Systems
- Battery-Operated Digital Devices
- Distributed DC Power Systems
DESCRIPTIO
The LTC®3834-1 is a high performance step-down switching regulator controller that drives an all N-channel synchronous power MOSFET stage. A constant-frequency current mode architecture allows a phase-lockable frequency of up to 650k Hz.
The 30μA no-load quiescent current extends operating life in battery powered systems. OPTI-LOOP pensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3834-1 Features a precision 0.8V reference . The 4V to 36V input supply range enpasses a wide range of battery chemistries.
The TRACK/SS pin ramps the output voltage during startup. Current foldback limits MOSFET heat dissipation during short-circuit conditions. An enhanced feature set part (LTC3834) is available. parison of LTC3834 and LTC3834-1
PART # LTC3834
CLKOUT/ PHASMD
EXTVCC...
