Product details

Vin (Min) (V) 1.5 Vin (Max) (V) 42 Vout (Min) (V) 6.8 Vout (Max) (V) 10.5 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 220 Switching frequency (Max) (kHz) 2300 Iq (Typ) (mA) 0.015 Features Adjustable Current Limit, Enable, Frequency Synchronization, Light Load Efficiency, Spread Spectrum Duty cycle (Max) (%) 87 TI functional safety category Functional Safety-Capable Rating Automotive Operating temperature range (C) -40 to 150
Vin (Min) (V) 1.5 Vin (Max) (V) 42 Vout (Min) (V) 6.8 Vout (Max) (V) 10.5 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 220 Switching frequency (Max) (kHz) 2300 Iq (Typ) (mA) 0.015 Features Adjustable Current Limit, Enable, Frequency Synchronization, Light Load Efficiency, Spread Spectrum Duty cycle (Max) (%) 87 TI functional safety category Functional Safety-Capable Rating Automotive Operating temperature range (C) -40 to 150
WQFN (RUM) 16 16 mm² 4 x 4
  • AEC-Q100 qualified:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Functional Safety-Capable
  • Wide VIN input range from 1.5 V to 42 V when VOUT ≥ 5 V (65-V absolute maximum)
  • Low shutdown current (IQ ≤ 5 µA)
  • Low standby current (IQ ≤ 15 µA)
  • Four programmable output voltage options and two selectable configurations
    • 6.8 V, 7.5 V, 8.5 V, or 10.5 V
    • Start-stop or e-call configurations
  • Adjustable switching frequency from 220 kHz to 2.3 MHz
  • Automatic wake-up and standby mode transition
  • Optional clock synchronization
  • Boost status indicator
  • 1.5-A peak MOSFET gate driver
  • Adjustable cycle-by-cycle current limit
  • Thermal shutdown
  • 16-pin WQFN with wettable and non-wettable flank options
  • Create a custom design using the LM5150-Q1 with the WEBENCH Power Designer
  • AEC-Q100 qualified:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Functional Safety-Capable
  • Wide VIN input range from 1.5 V to 42 V when VOUT ≥ 5 V (65-V absolute maximum)
  • Low shutdown current (IQ ≤ 5 µA)
  • Low standby current (IQ ≤ 15 µA)
  • Four programmable output voltage options and two selectable configurations
    • 6.8 V, 7.5 V, 8.5 V, or 10.5 V
    • Start-stop or e-call configurations
  • Adjustable switching frequency from 220 kHz to 2.3 MHz
  • Automatic wake-up and standby mode transition
  • Optional clock synchronization
  • Boost status indicator
  • 1.5-A peak MOSFET gate driver
  • Adjustable cycle-by-cycle current limit
  • Thermal shutdown
  • 16-pin WQFN with wettable and non-wettable flank options
  • Create a custom design using the LM5150-Q1 with the WEBENCH Power Designer

The LM5150-Q1 device is a wide input range automatic boost controller. The device is suitable for use as a pre-boost converter which maintains the output voltage from a vehicle battery during automotive cranking or from a back-up battery during the loss of vehicle battery.

The LM5150-Q1 switching frequency is programmed by a resistor from 220 kHz to 2.3 MHz. Fast switching (≥ 2.2 MHz) minimizes AM band interference and allows for a small solution size and fast transient response.

The LM5150-Q1 operates in low IQ standby mode when the input or output voltage is above the preset standby thresholds and automatically wakes up when the output voltage drops below the preset wake-up threshold.

The device transients in and out of the low IQ standby mode to extend battery life at light load. A single resistor programs the target output regulation voltage as well as the configuration. Additional features include low shutdown current, boost status indicator, adjustable cycle-by-cycle current limit, and thermal shutdown.

The LM5150-Q1 device is a wide input range automatic boost controller. The device is suitable for use as a pre-boost converter which maintains the output voltage from a vehicle battery during automotive cranking or from a back-up battery during the loss of vehicle battery.

The LM5150-Q1 switching frequency is programmed by a resistor from 220 kHz to 2.3 MHz. Fast switching (≥ 2.2 MHz) minimizes AM band interference and allows for a small solution size and fast transient response.

The LM5150-Q1 operates in low IQ standby mode when the input or output voltage is above the preset standby thresholds and automatically wakes up when the output voltage drops below the preset wake-up threshold.

The device transients in and out of the low IQ standby mode to extend battery life at light load. A single resistor programs the target output regulation voltage as well as the configuration. Additional features include low shutdown current, boost status indicator, adjustable cycle-by-cycle current limit, and thermal shutdown.

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Technical documentation

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Type Title Date
* Data sheet LM5150-Q1 Wide VIN Automotive Low IQ Boost Controller datasheet (Rev. C) 05 Oct 2021
Functional safety information LM5150x-Q1 Functional Safety, FIT Rate, and Failure Mode Distribution 22 May 2020
Technical article How to add overvoltage protection to a synchronous boost controller 17 Sep 2018
Technical article How to minimize pre-boost converter undershoot when automotive battery voltage drops 14 Nov 2017
Application note Improve DC/DC Regulator EMI for Free with Optimized Power Stage Layout 13 Nov 2017
EVM User's guide LM5150RUMEVM User's Guide 14 Aug 2017
EVM User's guide LM5150RUMHDEVM User's Guide 14 Aug 2017

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LM5150RUMEVM — LM5150RUM Evaluation Module

The LM5150RUMEVM evaluation module (EVM) is designed to supply a minimum voltage from a vehicle battery during cranking and provides the design engineer with a fully functional boost converter to evaluate the LM5150 Wide VIN Automotive Low IQ Boost Controller IC.

The EVM requires minimum 5V at the (...)

Evaluation board

LM5150RUMHDEVM — LM5150RUMHDEVM Evaluation Module

The LM5150RUMHDEVM evaluation module (EVM) is designed to supply a minimum voltage from a vehicle battery during cranking, and demonstrates a high density layout design example using the LM5150 Wide VIN Automotive Low IQ Boost Controller IC.

The EVM requires minimum 5V at the output to start up (...)

Simulation model

LM5150-Q1 PSpice Transient Model (Rev. B)

SNVMBD6B.ZIP (115 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Reference designs

TIDA-01628 — Reference design for automotive cluster driver notification functions

This reference design implements power and driver notification functions typically found in an automotive instrument cluster. The design features reverse battery protection, a pre-boost stage to support cold-crank battery voltage conditions down to 3.5 volts, buck regulators for 3.3-V and 5-V (...)
Reference designs

PMP30267 — Automotive Power Reference Design for Infotainment Systems

This reference design shows a complete power tree for automotive infotainment systems. The LM74700-Q1 provides reverse battery protection to the system and provides immunity to automotive transients specified in ISO 7637-2 and ISO 16750-2. The pre-booster with LM5150-Q1 provides a stable supply (...)
Reference designs

PMP21152 — Smart OR-ing boost converter reference design for automotive eCall

This reference design is a smart OR-ing boost converter for automotive emergency call (eCall) applications utilizing a low quiescent current boost controller. The design uses two boost power stages driven by the same controller. The main battery input includes a bypass switch function. The backup (...)
Reference designs

PMP30548 — Small automotive front-end 16-W power reference design

This reference design is an automotive front-end power supply able to provide 16 W for the 12-V car battery. The first stage is a pre-boost LM5150-Q1 to maintain a stable, mid-rail voltage of 8.5 V during cold-crank operation. Two downstream buck converters are able to handle jump start (...)
Reference designs

PMP15041 — 25W Automotive Start-Stop Reference Design Operating at 2.2 MHz

Automotive 12V batteries typically operate in the range of 9V-16V. However this voltage can vary widely due to transient conditions such as cold crank and load dump. This reference design creates a well-regulated 25W (5V,5A) output, regardless of large input voltage transients, utilizing the (...)
Reference designs

PMP30236 — Automotive Pre-Boost Reference Design with 10.5V @ 3.0A

This automotive pre-boost reference design has a nominal input voltage range of 2.7V to 10.5V and provides 10.5V @ 3.0A during cranking. It can withstand peak voltages up to 32.0V. The boost controller operates at 400KHz and can achieve 93% peak efficiency.
Package Pins Download
WQFN (RUM) 16 View options

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  • Ongoing reliability monitoring

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