text.skipToContent text.skipToNavigation


Automotive Grade 3-75V Wide Vin, Current Mode Non-Synchronous Buck-Boost Controller

Inventory: 7,879

Quality information

RoHS Yes
Lead finish / Ball material SN
MSL rating / Peak reflow Level-1-260C-UNLIM
Material content View
DPPM / MTBF / Fit rate View
Qualification summary View
Ongoing reliability monitoring View
Device marking View

Packaging information

Package | Pins Package qty | Carrier Operating temperature range (°C)
HTSSOP (PWP) | 20 73 | TUBE
-40 to 125
Package | Pins HTSSOP (PWP) | 20
Package qty | Carrier 73 | TUBE
Operating temperature range (°C) -40 to 125
View TI packaging information

Features for the LM5118-Q1

  • AEC-Q100 Qualified for Automotive Applications
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESDClassification Level C6
  • Ultra-Wide Input Voltage Range From 3 V to 75 V
  • Emulated Peak Current Mode Control
  • Smooth Transition Between Step-Down and Step-Up Modes
  • Switching Frequency Programmable to 500 KHz
  • Oscillator Synchronization Capability
  • Internal High Voltage Bias Regulator
  • Integrated High and Low-Side Gate Drivers
  • Programmable Soft-Start Time
  • Ultra-Low Shutdown Current
  • Enable Input Wide Bandwidth Error Amplifier
  • 1.5% Feedback Reference Accuracy
  • Thermal Shutdown
  • Package: 20-Pin HTSSOP (Exposed Pad)
  • Create a Custom Design Using the LM5118-Q1 With the WEBENCH® Power Designer

All trademarks are the property of their respective owners.

Description for the LM5118-Q1

The LM5118-Q1 widevoltage range Buck-Boost switching regulator controller features all of the functions necessary toimplement a high-performance, cost-efficient Buck-Boost regulator using a minimum of externalcomponents. The Buck-Boost topology maintains output voltage regulation when the input voltage iseither less than or greater than the output voltage, making it especially suitable for automotiveapplications. The LM5118-Q1operates as a buck regulator while the input voltage is sufficiently greater than the regulatedoutput voltage and gradually transitions to the buck-boost mode as the input voltage approaches theoutput. This dual-mode approach maintains regulation over a wide range of input voltages withoptimal conversion efficiency in the buck mode and a glitch-free output during mode transitions.This easy-to-use controller includes drivers for the high-side buck MOSFET and the low-side boostMOSFET. The regulators control method is based upon current mode control using an emulated currentramp. Emulated current mode control reduces noise sensitivity of the pulse-width modulationcircuit, allowing reliable control of the very small duty cycles necessary in high input voltageapplications. Additional protection features include current limit, thermal shutdown and an enableinput. The device is available in a power-enhanced, 20-pin HTSSOP package featuring an exposed dieattach pad to aid thermal dissipation.


Qty Price (USD)
1-99 5.318
100-249 4.335
250-999 3.407
1,000+ 2.89

Additional package qty | carrier options

Package qty | Carrier 2,500 | LARGE T&R
Inventory 7,245
Qty | Price (USD) 1ku | 2.471 1-99 4.547 100-249 3.707 250-999 2.913 1,000+ 2.471
Custom reel may be available