LTC3727LX-1 Selling Leads, Price trend, LTC3727LX-1 DataSheet download, circuit diagram from SeekIC.com

Features: Wide Output Voltage Range: 0.8V VOUT 14V Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise OPTI-LOOP® Compensation Minimizes COUT ±1.5% Output Voltage Accuracy Power Good Output Voltage Monitor Phase-Lockable Fixed Frequency 250kHz to 550kHz...

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SeekIC No. : 004402324 Detail

LTC3727LX-1: Features: Wide Output Voltage Range: 0.8V VOUT 14V Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise OPTI-LOOP® Compensation Minimizes COUT ±1.5% Outpu...

LTC3727LX-1 Data Sheet

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Part Number:: LTC3727LX-1
Supply Ability:: 5000

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Product Details

Description

Features:

Wide Output Voltage Range: 0.8V V_OUT 14V
Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise
OPTI-LOOP® Compensation Minimizes COUT
±1.5% Output Voltage Accuracy
Power Good Output Voltage Monitor
Phase-Lockable Fixed Frequency 250kHz to 550kHz
Dual N-Channel MOSFET Synchronous Drive
Wide VIN Range: 4V to 32V Operation
Very Low Dropout Operation: 99% Duty Cycle
Adjustable Soft-Start Current Ramping
Foldback Output Current Limiting
Output Overvoltage Protection
Low Shutdown I_Q: 20A
Selectable Constant-Frequency or Burst Mode® Operation
Small 28-Lead SSOP and 5mm * 5mm QFN Packages

Application

Telecom Systems
Automotive Systems
Distributed DC Power Systems

Pinout

Connection Diagram

Specifications

Input Supply Voltage (V_IN).........................32V to 0.3V
Top Side Driver Voltages
(BOOST1, BOOST2) ...................................40V to 0.3V
Switch Voltage (SW1, SW2) .........................32V to 5V
INTV_CC, EXTV_CC, (BOOST1-SW1),
(BOOST2-SW2) ........................................8.5V to 0.3V
RUN/SS1, RUN/SS2, PGOOD ..................... 7V to 0.3V
SENSE1+, SENSE2+, SENSE1,
SENSE2 Voltages .....................................14V to 0.3V
PLLIN, PLLFLTR, FCB Voltages ........... INTVCC to 0.3V
I_TH1, IT_H2, V_OSENSE1, V_OSENSE2Voltages ...2.7V to 0.3V
Peak Output Current < 10s (TG1, TG2, BG1, BG2) .... 3A
INTVCC Peak Output Current ................................ 50mA
Operating Temperature Range (Note 2)..... 40 to 85
Junction Temperature (Note 3) ............................. 125
Storage Temperature Range ................. 65 to 125
Lead Temperature
(Soldering, 10 sec, G Package)............................. 300
Solder Reflow Temperature (UH Package) ........... 265

Description

The LTC^®3727LX-1 is a high performance dual step-down switching regulator controller that drives all N-channel synchronous power MOSFET stages. A constant-frequency current mode architecture allows phase-lockable frequency of up to 550kHz. Power loss and noise due to the ESR of the input capacitors are minimized by operating the two controller output stages out of phase.

OPTI-LOOP compensation of LTC3727LX-1 allows the transient response to be optimized over a wide range of output capacitance and ESR values. There is a precision 0.8V reference and a power good output indicator. A wide 4V to 28V (32V maximum) input supply range encompasses all battery chemistries.

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