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LTC3834-1

Features: Wide Output Voltage Range: 0.8V V OUT 10V Low Operating IQ: 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 C...

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SeekIC No. : 004402384 Detail

LTC3834-1: Features: Wide Output Voltage Range: 0.8V V OUT 10V Low Operating IQ: 30A OPTI-LOOP® Compensation Minimizes COUT ±1% Output Voltage Accuracy Wide VIN Range: 4V to 36V Phase-Lockable Fixed Frequ...

LTC3834-1 Data Sheet

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Part Number:
LTC3834-1
Supply Ability:
5000

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  • 1~5000
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  • 15 Days
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Product Details

Description



Features:

Wide Output Voltage Range: 0.8V V OUT 10V
Low Operating IQ: 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
Output Overvoltage Protection
Low Shutdown IQ: 4A
Selectable Continuous, Pulse-Skipping or Burst Mode® Operation at Light Loads
Small 16-Lead Narrow SSOP or 5mm * 3mm DFN 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
Top Side Driver Voltage (BOOST) .................42V to 0.3V
Switch Voltage (SW) .......................................36V to 5V
INTVCC, (BOOST-SW)...................................8.5V to 0.3V
RUN, TRACK/SS ............................................. 7V to 0.3V
SENSE+, SENSE Voltages ...........................11V to 0.3V
PLLIN/MODE, PLLLPF ............................. INTVCC 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
(GN Package, Soldering, 10 sec) ........................... 300


Description

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 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 LTC3834-1 features a precision 0.8V reference .

The 4V to 36V input supply range of LTC3834-1 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. An enhanced feature set part (LTC3834) is available.




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