LM5117PMH/NOPB
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Texas Instruments LM5117PMH/NOPB

Manufacturer No:
LM5117PMH/NOPB
Manufacturer:
Texas Instruments
Package:
Bulk
Description:
IC REG CTRLR BUCK 20TSSOP
Delivery:
Payment:
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Product Introduction

Overview

The LM5117PMH/NOPB is a synchronous buck controller produced by Texas Instruments, designed for step-down regulator applications from high voltage or widely varying input supplies. This controller utilizes current mode control with an emulated current ramp, providing inherent line feed-forward, cycle-by-cycle current limiting, and ease of loop compensation. The LM5117 is particularly suited for applications requiring reliable control over a wide range of input voltages, from 5.5 V to 65 V.

Key Specifications

Parameter Value
Package 20-Power HTSSOP (PWP)
Number of Pins 20
Operating Temperature Range -40°C to 125°C
Input Voltage Range 5.5 V to 65 V
Control Mode Current Mode
Switching Frequency 50 kHz to 750 kHz
Peak Gate Drives 3.3 A
Output Voltage Range 0.8 V to 62 V
Maximum Output Current 20 A
Quiescent Current 4.8 mA
Topology Buck
Moisture Sensitivity Level (MSL) 3 (168 Hours)

Key Features

  • Emulated Peak Current Mode Control
  • Wide Operating Range from 5.5 V to 65 V
  • Robust 3.3-A Peak Gate Drives
  • Adaptive Dead-Time Output Driver Control
  • Free-Run or Synchronizable Clock up to 750 kHz
  • Optional Diode Emulation Mode for improved efficiency at light load conditions
  • Programmable Output from 0.8 V
  • Precision 1.5% Voltage Reference
  • Analog Current Monitor
  • Programmable Current Limit
  • Hiccup Mode Overcurrent Protection
  • Programmable Soft-Start and Tracking
  • Programmable Line Undervoltage Lockout
  • Programmable Switchover to External Bias Supply
  • Thermal Shutdown
  • AEC-Q100 Qualified for Automotive Applications

Applications

The LM5117PMH/NOPB is suitable for a variety of applications, including:

  • Automotive systems, given its AEC-Q100 qualification
  • High voltage step-down regulators
  • Power supplies requiring wide input voltage ranges
  • Industrial power systems
  • Telecommunications and networking equipment
  • Server and data center power supplies

Q & A

  1. What is the input voltage range of the LM5117PMH/NOPB?

    The input voltage range is from 5.5 V to 65 V.

  2. What is the operating temperature range of the LM5117PMH/NOPB?

    The operating temperature range is -40°C to 125°C.

  3. What is the maximum output current of the LM5117PMH/NOPB?

    The maximum output current is 20 A.

  4. Does the LM5117PMH/NOPB support frequency synchronization?
  5. What is the purpose of the diode emulation mode in the LM5117PMH/NOPB?

    The diode emulation mode enables discontinuous mode operation for improved efficiency at light load conditions.

  6. Is the LM5117PMH/NOPB qualified for automotive applications?
  7. What is the quiescent current of the LM5117PMH/NOPB?

    The quiescent current is 4.8 mA.

  8. Does the LM5117PMH/NOPB have thermal shutdown protection?
  9. What is the precision of the voltage reference in the LM5117PMH/NOPB?

    The voltage reference has a precision of 1.5%.

  10. Can the LM5117PMH/NOPB be programmed for soft-start and tracking?

Product Attributes

Output Type:Transistor Driver
Function:Step-Down
Output Configuration:Positive
Topology:Buck
Number of Outputs:1
Output Phases:1
Voltage - Supply (Vcc/Vdd):5.5V ~ 65V
Frequency - Switching:200kHz, 480kHz
Duty Cycle (Max):- 
Synchronous Rectifier:Yes
Clock Sync:No
Serial Interfaces:- 
Control Features:Frequency Control, Ramp, Soft Start
Operating Temperature:-40°C ~ 125°C (TJ)
Mounting Type:Surface Mount
Package / Case:20-PowerTSSOP (0.173", 4.40mm Width)
Supplier Device Package:20-HTSSOP
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Similar Products

Part Number LM5117PMH/NOPB LM5117PMHX/NOPB LM5117PMHE/NOPB LM5117QPMH/NOPB
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active Active
Output Type Transistor Driver Transistor Driver Transistor Driver Transistor Driver
Function Step-Down Step-Down Step-Down Step-Down
Output Configuration Positive Positive Positive Positive
Topology Buck Buck Buck Buck
Number of Outputs 1 1 1 1
Output Phases 1 1 1 1
Voltage - Supply (Vcc/Vdd) 5.5V ~ 65V 5.5V ~ 65V 5.5V ~ 65V 5.5V ~ 65V
Frequency - Switching 200kHz, 480kHz 200kHz, 480kHz 200kHz, 480kHz 200kHz, 480kHz
Duty Cycle (Max) - - - -
Synchronous Rectifier Yes Yes Yes Yes
Clock Sync No No No No
Serial Interfaces - - - -
Control Features Frequency Control, Ramp, Soft Start Frequency Control, Ramp, Soft Start Frequency Control, Ramp, Soft Start Frequency Control, Ramp, Soft Start
Operating Temperature -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 20-PowerTSSOP (0.173", 4.40mm Width) 20-PowerTSSOP (0.173", 4.40mm Width) 20-PowerTSSOP (0.173", 4.40mm Width) 20-PowerTSSOP (0.173", 4.40mm Width)
Supplier Device Package 20-HTSSOP 20-HTSSOP 20-HTSSOP 20-HTSSOP

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