LM5176QPWPTQ1
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Texas Instruments LM5176QPWPTQ1

Manufacturer No:
LM5176QPWPTQ1
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
.5-55VIN 4 SWITCH BUCK-BOOST CON
Delivery:
Payment:
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Product Introduction

Overview

The LM5176-Q1, produced by Texas Instruments, is a synchronous four-switch buck-boost DC/DC controller designed to regulate output voltage at, above, or below the input voltage. This device operates over a wide input voltage range of 4.2 V to 55 V (60 V absolute maximum), making it versatile for various applications. It employs current-mode control in both buck and boost modes, ensuring superior load and line regulation. The LM5176-Q1 features integrated 2-A MOSFET gate drivers, programmable soft-start, and multiple protection mechanisms including cycle-by-cycle current limiting, input undervoltage lockout (UVLO), output overvoltage protection (OVP), and thermal shutdown. It is AEC-Q100 qualified for automotive applications and is functional safety-capable, making it suitable for critical systems.

Key Specifications

Parameter Minimum Typical Maximum Unit
Input Voltage (VIN) 4.2 V (2.5 V with bias) - 55 V (60 V absolute maximum) V
Output Voltage (VOUT) 0.8 V - 55 V V
Switching Frequency 100 kHz - 600 kHz Hz
MOSFET Gate Drivers - 2 A - A
Operating Temperature -40°C - 125°C °C
Package - - HTSSOP-28 -

Key Features

  • High efficiency buck-boost transition
  • Adjustable switching frequency and optional frequency sync and dithering
  • Integrated 2-A MOSFET gate drivers
  • Cycle-by-cycle current limit and optional hiccup mode protection
  • Optional input or output average current limiting
  • Programmable input UVLO and soft-start
  • Power good and output overvoltage protection
  • VOUT short protection
  • AEC-Q100 qualified for automotive applications and functional safety-capable
  • Single inductor buck-boost controller for step-up/step-down DC/DC conversion

Applications

  • Automotive start-stop systems
  • Backup battery and supercapacitor charging
  • USB power delivery
  • Battery-powered systems
  • LED lighting

Q & A

  1. What is the input voltage range of the LM5176-Q1?

    The input voltage range is from 4.2 V to 55 V (60 V absolute maximum).

  2. What is the output voltage range of the LM5176-Q1?

    The output voltage range is from 0.8 V to 55 V.

  3. What is the switching frequency range of the LM5176-Q1?

    The switching frequency can be programmed between 100 kHz and 600 kHz.

  4. Does the LM5176-Q1 have integrated MOSFET gate drivers?

    Yes, it has integrated 2-A MOSFET gate drivers.

  5. What protection features does the LM5176-Q1 offer?

    The device offers cycle-by-cycle current limiting, input undervoltage lockout (UVLO), output overvoltage protection (OVP), thermal shutdown, and optional hiccup mode protection.

  6. Is the LM5176-Q1 suitable for automotive applications?

    Yes, it is AEC-Q100 qualified for automotive applications and is functional safety-capable.

  7. What package is the LM5176-Q1 available in?

    The LM5176-Q1 is available in the HTSSOP-28 package.

  8. Can the switching frequency be synchronized to an external clock signal?

    Yes, the switching frequency can be synchronized to an external clock signal.

  9. Does the LM5176-Q1 support soft-start and UVLO programming?

    Yes, it supports programmable soft-start and input UVLO with hysteresis.

  10. What is the operating temperature range of the LM5176-Q1?

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

Product Attributes

Output Type:Transistor Driver
Function:Step-Up/Step-Down
Output Configuration:Positive
Topology:Buck-Boost
Number of Outputs:1
Output Phases:1
Voltage - Supply (Vcc/Vdd):4.2V ~ 55V
Frequency - Switching:100kHz ~ 600kHz
Duty Cycle (Max):100%
Synchronous Rectifier:Yes
Clock Sync:Yes
Serial Interfaces:- 
Control Features:Current Limit, Enable, Frequency Control, Power Good, Soft Start
Operating Temperature:-40°C ~ 150°C (TJ)
Mounting Type:Surface Mount
Package / Case:28-PowerTSSOP (0.173", 4.40mm Width)
Supplier Device Package:28-HTSSOP
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Similar Products

Part Number LM5176QPWPTQ1 LM5175QPWPTQ1 LM5176QPWPRQ1
Manufacturer Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active
Output Type Transistor Driver Transistor Driver Transistor Driver
Function Step-Up/Step-Down Step-Up/Step-Down Step-Up/Step-Down
Output Configuration Positive Positive Positive
Topology Buck-Boost Buck-Boost Buck-Boost
Number of Outputs 1 1 1
Output Phases 1 1 1
Voltage - Supply (Vcc/Vdd) 4.2V ~ 55V 3.5V ~ 42V 4.2V ~ 55V
Frequency - Switching 100kHz ~ 600kHz 100kHz ~ 600kHz 100kHz ~ 600kHz
Duty Cycle (Max) 100% - -
Synchronous Rectifier Yes Yes Yes
Clock Sync Yes Yes Yes
Serial Interfaces - - -
Control Features Current Limit, Enable, Frequency Control, Power Good, Soft Start Enable, Frequency Control, Power Good, Soft Start Current Limit, Enable, Frequency Control, Power Good, Soft Start
Operating Temperature -40°C ~ 150°C (TJ) -40°C ~ 150°C (TJ) -40°C ~ 125°C (TJ)
Mounting Type Surface Mount Surface Mount Surface Mount
Package / Case 28-PowerTSSOP (0.173", 4.40mm Width) 28-PowerTSSOP (0.173", 4.40mm Width) 28-PowerTSSOP (0.173", 4.40mm Width)
Supplier Device Package 28-HTSSOP 28-HTSSOP 28-HTSSOP

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