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Product details

Parameters

Vin (Min) (V) 1.5 Vin (Max) (V) 42 Vout (Min) (V) 6 Vout (Max) (V) 11.5 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 Duty cycle (Max) (%) 87 TI functional safety category Functional Safety-Capable Rating Automotive Operating temperature range (C) -40 to 125 open-in-new Find other Boost controllers (external switch)

Package | Pins | Size

WQFN (RUM) 16 16 mm² 4 x 4 open-in-new Find other Boost controllers (external switch)

Features

  • 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
    • 6.0 V, 6.5 V, 9.5 V, or 11.5 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 flanks
  • Create a custom design using the LM51501-Q1 with the WEBENCH® Power Designer

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open-in-new Find other Boost controllers (external switch)

Description

The LM51501-Q1 is a wide input range automatic boost controller. The device can be used to maintain a stable output voltage during automotive cranking from a vehicle battery or from a back-up battery.

The LM51501-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 LM51501-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 transitions 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. Status indicator can be used to control a circuit to bypass the diode when the part is not boosting in order to reduce power dissipation. In E-call mode, it can be used to control a disconnect switch to protect the back-up-battery.

open-in-new Find other Boost controllers (external switch)
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Technical documentation

= Featured
No results found. Please clear your search and try again. View all 3
Type Title Date
* Datasheet LM51501-Q1 Wide VIN Automotive Low IQ Boost Controller datasheet (Rev. B) Jun. 09, 2020
Application notes LM5150x-Q1 Functional Safety, FIT Rate, and Failure Mode Distribution May 22, 2020
Technical articles How to add overvoltage protection to a synchronous boost controller Sep. 17, 2018

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$75.00
Description

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 (...)

Features
  • 2.5V to 40V input voltage range (5V is required to start-up)
  • 8.5V target output voltage when input voltage drops below the target
  • Up to 2.94A output current
  • 440kHz typical switching frequency
  • Automatic bypass switch control
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

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 (...)

Features
  • 3.2V to 40V input voltage range (5V is required to start-up)
  • 6.8V target output voltage when input voltage drops below the target
  • Up to 2.2A output current (1.1A continuous, 2.2A peak)
  • 440kHz typical switching frequency
  • 2.2MHz typical switching frequency

Design tools & simulation

SIMULATION MODELS Download
SNVMBH5.ZIP (150 KB) - PSpice Model
GERBER FILES Download
SNVC217A.ZIP (275 KB)

CAD/CAE symbols

Package Pins Download
WQFN (RUM) 16 View options

Ordering & quality

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