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LM5119PSQv Power Path Management IC Switching Controllers

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City: shenzhen

Country/Region:china

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LM5119PSQv Power Path Management IC Switching Controllers

Brand Name Ti
Model Number LM5119PSQ
Minimum Order Quantity Contact us
Price Contact us
Payment Terms Paypal, Western Union, TT
Supply Ability 50000 Pieces per Day
Delivery Time The goods will be shipped within 3 days once received fund
Packaging Details QFN32
Description Buck Regulator Positive Output Step-Down DC-DC Controller IC 32-WQFN (5x5)
Manufacturer Kit Texas Instruments
Type Current Mode PWM Controllers
Package / Case LLP EP
Mounting Style SMD/SMT
Maximum Operating Temperature + 125 C
Minimum Operating Temperature - 40 C
Detailed Product Description

LM5119PSQ Power Path Management IC Switching Controllers

 

1 Features

  • Emulated Peak Current Mode Control
  • Wide Operating Range (5.5 V to 65 V)

  • Easily Configurable for Dual Outputs or Interleaved Single Output

  • Robust 3.3-A Peak Gate Drive

  • Switching Frequency Programmable to 750 kHz

  • Optional Diode Emulation Mode

  • Programmable Output from 0.8 V

  • Precision 1.5% Voltage Reference

  • Programmable Current Limit

  • Hiccup Mode Overload Protection

  • Programmable Soft-Start

  • Programmable Line Undervoltage Lockout

  • Automatic Switch-Over to External Bias Supply

  • Channel2 Enable Logic Input

  • Thermal Shutdown

  • Leadless 32-Pin WQFN Package

 

2 Applications

  • Industrial DC-DC Motor Drivers

  • Telecom: Servers and Routers

 

3 Description

The LM5119 device is a dual synchronous buck controller intended for step-down regulator applications from a high voltage or widely varying input supply. The control method is based upon current mode control using an emulated current ramp. Current mode control provides inherent line feedforward, cycle-by-cycle current limiting and ease- of-loop compensation. The use of an emulated control ramp reduces noise sensitivity of the pulse- width modulation circuit, allowing reliable control of very small duty cycles necessary in high input voltage applications. The switching frequency is programmable from 50 kHz to 750 kHz. The LM5119 device drives external high-side and low-side NMOS power switches with adaptive dead-time control. A user-selectable diode emulation mode enables discontinuous mode operation for improved efficiency at light load conditions. A high voltage bias regulator with automatic switch-over to external bias further improves efficiency. Additional features include thermal shutdown, frequency synchronization, cycle- by-cycle and hiccup mode current limit and adjustable line undervoltage lockout. The device is available in a power enhanced leadless 32-pin WQFN package featuring an exposed die attach pad to aid thermal dissipation.

Device Information

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LM5119

WQFN (32)

5.00 mm × 5.00 mm

Product Tags: microchip battery management   power management integrated circuit  
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