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LM5150-Q1

ACTIVE

Automotive 1.5-V to 42-V VIN, low IQ boost controller with 6.8V, 7.5V, 8.5V, 10.5V output options

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Data sheet

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LM5152-Q1 ACTIVE Automotive 2.2 MHz wide VIN low IQ synchronous boost controller LM5152-Q1 is a synchronous boost with higher efficiency
LM51521-Q1 ACTIVE Automotive 2.2-MHz wide VIN low IQ synchronous boost controller with disabled bypass mode LM51521-Q1 is a synchronous boost and has higher efficiency

LM5150-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Topology Boost Vin (max) (V) 42 Vin (min) (V) 1.5 Vout (max) (V) 10.5 Vout (min) (V) 6.8 Control mode current mode Features Adjustable current limit, Enable, Frequency synchronization, Light-load efficiency, Nonsynchronous rectification, Spread Spectrum Operating temperature range (°C) -40 to 150 Iq (typ) (µA) 15 Duty cycle (max) (%) 87 TI functional safety category Functional Safety-Capable EMI features Frequency Dithering, Spread Spectrum
Rating Automotive Topology Boost Vin (max) (V) 42 Vin (min) (V) 1.5 Vout (max) (V) 10.5 Vout (min) (V) 6.8 Control mode current mode Features Adjustable current limit, Enable, Frequency synchronization, Light-load efficiency, Nonsynchronous rectification, Spread Spectrum Operating temperature range (°C) -40 to 150 Iq (typ) (µA) 15 Duty cycle (max) (%) 87 TI functional safety category Functional Safety-Capable EMI features Frequency Dithering, Spread Spectrum
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) PDF | HTML 05 Oct 2021
Functional safety information LM5150x-Q1 Functional Safety, FIT Rate, and Failure Mode Distribution 22 May 2020
Technical article How to minimize pre-boost converter undershoot when automotive battery voltage dro PDF | HTML 14 Nov 2017
Application brief Improve DC/DC Regulator EMI for Free with Optimized Power Stage Layout 13 Nov 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 (...)

User guide: PDF
Not available on TI.com
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 (...)

User guide: PDF
Not available on TI.com
Simulation model

LM5150-Q1 PSpice Transient Model (Rev. B)

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

SNVC214 — LM5150-Q1 Boost Controller Quick Start Calculator

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC controllers (external FET)
  • LM5150-Q1 — Automotive 1.5-V to 42-V VIN, low IQ boost controller with 6.8V, 7.5V, 8.5V, 10.5V output options
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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 (...)
Design guide: PDF
Schematic: PDF
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 (...)
Test report: PDF
Schematic: PDF
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 (...)
Test report: PDF
Schematic: PDF
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 (...)
Test report: PDF
Schematic: PDF
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 (...)
Test report: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
WQFN (RUM) 16 Ultra Librarian
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Ordering & quality

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