LTC1736 Selling Leads, Price trend, LTC1736 DataSheet download, circuit diagram from SeekIC.com

Features: · Dual N-Channel MOSFET Synchronous Drive· Synchronizable/Programmable Fixed Frequency· Wide VIN Range: 3.5V to 36V Operation· 5-Bit Digital-to-Analog VOUT Selection: 0.925V to 2.00V Range with 50mV/25mV Steps· OPTI-LOOPTM Compensation Minimizes COUT· ±1% Output Voltage Accuracy· Power G...

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SeekIC No. : 004401863 Detail

LTC1736: Features: · Dual N-Channel MOSFET Synchronous Drive· Synchronizable/Programmable Fixed Frequency· Wide VIN Range: 3.5V to 36V Operation· 5-Bit Digital-to-Analog VOUT Selection: 0.925V to 2.00V Range...

LTC1736 Data Sheet

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Part Number:: LTC1736
Supply Ability:: 5000

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Upload time: 2024/11/24

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Product Details

Description

Features:

· Dual N-Channel MOSFET Synchronous Drive
· Synchronizable/Programmable Fixed Frequency
· Wide V_IN Range: 3.5V to 36V Operation
· 5-Bit Digital-to-Analog V_OUT Selection: 0.925V to 2.00V Range with 50mV/25mV Steps
· OPTI-LOOP^TM Compensation Minimizes C_OUT· ±1% Output Voltage Accuracy
· Power Good Output Voltage Monitor
· Active Voltage Positioning Compatible
· Output Overvoltage Crowbar Protection
· Internal Current Foldback
· Latched Short-Circuit Shutdown Timer with Defeat Option
· Forced Continuous Control Pin
· Optional Programmable Soft-Start
· Remote Output Voltage Sense
· Available in 24-Lead SSOP Package

Application

·Notebook and Palmtop Computers, PDAs
· Power Supply for Mobile Pentium^® II and Pentium III Processors
· Low Voltage Power Supplies

Pinout

Connection Diagram

Specifications

Input Supply Voltage (V_IN).............................36V to 0.3V
Topside Driver Supply Voltage (BOOST).........42V to 0.3V
Switch Voltage (SW) ........................................36V to 5V
EXTV_CC, VIDV_CC, (BOOST SW) Voltages .....7V to 0.3V
SENSE+, SENSE............................ 1.1(INTV_CC) to 0.3V
FCB Voltage ..............................(INTV_CC + 0.3V) to 0.3V
I_TH, V_OSENSE, V_FBVoltage ...........................2.7V to 0.3V
RUN/SS, VID0 to VID4, PGOOD Voltages .......7V to 0.3V
Peak Driver Output Current <10ms (TG, BG) ............... 3A
INTV_CC Output Current .......................................... 50mA
Operating Ambient Temperature Range
LTC1736C .................................................. 0 to 85
LTC1736I.............................................. 40 to 85
Junction Temperature (Note 2) ............................. 125
Storage Temperature Range ................. 65 to 150
Lead Temperature (Soldering, 10 sec).................. 300

Description

The LTC^®1736 is a synchronous step-down switching regulator controller optimized for CPU power. The output voltage is programmed by a 5-bit digital-to-analog converter (DAC) that adjusts the output voltage from 0.925V to 2.00V according to Intel mobile VID specifications. The 0.8V reference is compatible with future microprocessor generations.

The operating frequency (synchronizable up to 500kHz) of LTC1736 is set by an external capacitor allowing maximum flexibility
in optimizing efficiency. The output voltage is monitored by a power good window comparator that indicates when the output is within 7.5% of its programmed value.

Protection features of LTC1736 include: internal foldback current limiting, output overvoltage crowbar and optional short-circuit
shutdown. Soft-start is provided by an external capacitor that can be used to properly sequence supplies. The operating current level is user-programmable via an external current sense resistor. Wide input supply range allows operation from 3.5V to 30V (36V maximum).

Pin defeatable Burst Mode^TM operation provides high efficiency at low load currents. OPTI-LOOP compensation
allows the transient response to be optimized over a wide range of output capacitance and ESR values.

LTC1736

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