LTC3835

PRODUCTION

Low IQ Synchronous Step-Down Controller

Analog Devices LTC3835 Product Info

10 February 2026 7

Features

Wide Output Voltage Range: 0.8V ≤ V_OUT ≤ 10V
Low Operating Quiescent Current: 80μA
OPTI-LOOP^® Compensation Minimizes C_OUT
1% Output Voltage Accuracy
Wide V_IN 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
Power Good Output Voltage Monitor
Clock Output for PolyPhase^® Applications
Output Overvoltage Protection
Low Shutdown I_Q: 10μA
Internal LDO Powers Gate Drive from V_IN or V_OUT
Selectable Continuous, Pulse-Skipping or Burst Mode^® Operation at Light Loads
Small 20-Lead TSSOP or 4mm × 5mm QFN Package
AEC-Q100 Qualified for Automotive Applications

Part details & applications

The LTC3835 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.

The 80μA no-load quiescent current extends operating life in battery powered systems. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3835 features a precision 0.8V reference and a power good output indicator. The 4V to 36V input supply range encompasses 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.

Comparison of LTC3835 and LTC3835-1
PART #	CLKOUT/PHASMD	EXTV_CC	PGOOD	PACKAGES
LTC3835	Yes	Yes	Yes	FE20/4 × 5 QFN
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