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LTC3834

Features: Wide Output Voltage Range: 0.8V VOUT 10V Low Operating Quiescent Current: 30A OPTI-LOOP® Compensation Minimizes COUT ±1% Output Voltage Accuracy Wide VIN Range: 4V to 36V Phase-Lockable Fixed Frequency 140kHz to 650kHz Dual N-Channel MOSFET Synchronous Drive Very Low Dropout Opera...

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SeekIC No. : 004402383 Detail

LTC3834: Features: Wide Output Voltage Range: 0.8V VOUT 10V Low Operating Quiescent Current: 30A OPTI-LOOP® Compensation Minimizes COUT ±1% Output Voltage Accuracy Wide VIN Range: 4V to 36V Phase-Lock...

LTC3834 Data Sheet

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Part Number:
LTC3834
Supply Ability:
5000

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  • 1~5000
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  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

Wide Output Voltage Range: 0.8V VOUT 10V
Low Operating Quiescent Current: 30A
OPTI-LOOP® Compensation Minimizes COUT
±1% Output Voltage Accuracy
Wide VIN Range: 4V to 36V
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 IQ: 4A
Internal LDO Powers Gate Drive from VIN or VOUT
Selectable Continuous, Pulse Skipping or Burst Mode® Operation at Light Loads
 Small 20-Lead TSSOP or 4mm * 5mm QFN Package


Application

 Automotive Systems
Telecom Systems
Battery-Operated Digital Devices
Distributed DC Power Systems


Pinout

Connection Diagram


Specifications

Input Supply Voltage (VIN) ......................... 36V to 0.3V
Topside Driver Voltage (BOOST) ................ 42V to 0.3V
Switch Voltage (SW) .................................... 36V to 5V
INTVCC, (BOOST-SW), CLKOUT, PGOOD .. 8.5V to 0.3V
RUN, TRACK/SS .......................................... 7V to 0.3V
SENSE+, SENSE Voltages ...................... 11V to 0.3V
PLLIN/MODE, PHASMD, PLLLPF .......... INTVCC to 0.3V
EXTVCC .................................................... 10V to 0.3V
ITH, VFB Voltages .................................... 2.7V to 0.3V
Peak Output Current <10s (TG, BG) .........................3A
INTVCC Peak Output Current ................................ 50mA
Operating Temperature Range (Note 2).... 40 to 85
Junction Temperature (Note 3) .............................. 125
Storage Temperature Range ................... 65 to 150
Lead Temperature (Soldering, 10 sec)
      FE Package ....................................................... 300


Description

The LTC®3834 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 30A 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 LTC3834 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 start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. A reduced feature set version of the part (LTC3834-1) is available in a smaller, lower pin count package.




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