Datasheet Analog Devices LTC3835IGN-1#PBF — 数据表

LTC3835-1
Low IQ Synchronous
Step-Down Controller
FEATURES DESCRIPTION n The LTC®3835-1 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 650kHz. n Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 10V
Low Operating IQ: 80μA
OPTI-LOOP® Compensation Minimizes COUT
±1% Output Voltage Accuracy
Wide VIN Range: 4V to 36V Operation
Phase-Lockable Fixed Frequency 140kHz to 650kHz
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: 10μA
Selectable Continuous, Pulse-Skipping or
Burst Mode® Operation at Light Loads
Small 16-Lead Narrow SSOP or 3mm × 5mm
DFN Package n The TRACK/SS pin ramps the output voltage during startup. Current foldback limits MOSFET heat dissipation during
short-circuit conditions.
Comparison of LTC3835 and LTC3835-1 APPLICATIONS …