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LTC3721-1

Features: High Efficiency Push-Pull PWM 1.5A Sink, 1A Source Output Drivers Adjustable Push-Pull Dead-Time Adjustable System Undervoltage Lockout and Hysteresis Adjustable Leading Edge Blanking Low Start-Up and Quiescent Currents Current Mode Operation Single Resistor Slope Compensation VCC UVLO ...

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SeekIC No. : 004402315 Detail

LTC3721-1: Features: High Efficiency Push-Pull PWM 1.5A Sink, 1A Source Output Drivers Adjustable Push-Pull Dead-Time Adjustable System Undervoltage Lockout and Hysteresis Adjustable Leading Edge Blanking Low...

LTC3721-1 Data Sheet

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Part Number:
LTC3721-1
Supply Ability:
5000

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

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Product Details

Description



Features:

High Efficiency Push-Pull PWM
1.5A Sink, 1A Source Output Drivers
Adjustable Push-Pull Dead-Time
Adjustable System Undervoltage Lockout and Hysteresis
Adjustable Leading Edge Blanking
Low Start-Up and Quiescent Currents
Current Mode Operation
Single Resistor Slope Compensation
VCC UVLO and 25mA Shunt Regulator
Programmable Fixed Frequency Operation to 1MHz
Soft-Start, Cycle-by-Cycle Current Limiting and Hiccup Mode Short-Circuit Protection
5V, 15mA Low Dropout Regulator
16-Pin SSOP and (4mm * 4mm) QFN Packages


Application

Telecommunications, Infrastructure Power Systems
Distributed Power Architectures
Server Power Supplies
High Density Power Modules


Pinout

Connection Diagram


Specifications

VCC to GND (Low Impedance Source) ...... 0.3V to 10V
(Chip Self-Regulates at 10.3V)
UVLO to GND............................................. 0.3V to VCC
All Other Pins to GND
(Low Impedance Source) .........................0.3V to 5.5V
VCC (Current Fed) ................................................. 40mA
VREF Output Current ............................... Self-Regulated
Operating Temperature (Notes 5,6)
LTC3721-1 ............................................ 40°C to 85°C
Storage Temperature Range ...............65°C to 125°C
Lead Temperature (GN Package only)
(Soldering, 10sec) ................................................ 300°C


Description

The LTC®3721-1 push-pull PWM controller provides all of the control and protection functions necessary for compact and highly efficient, isolated power converters. High integration minimizes external component count, while preserving design flexibility.

The robust push-pull output stages switch at half the oscillator frequency. Dead-time is independently programmed with an external resistor. A UVLO program input provides precise system turn-on and turn off voltages. The LTC3721-1 features peak current mode control with programmable slope compensation and leading edge blanking.

The LTC3721-1 features extremely low operating and start-up currents and reliable short-circuit and overtemperature protection. The LTC3721-1 is offered in 16-pin SSOP and (4mm × 4mm) QFN packages.




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