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LM51501-Q1

ACTIVE

Automotive 1.5-V to 42-V VIN, low IQ boost controller with 6V, 6.5V, 9.5V, 11.5V output options

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Data sheet

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

LM51501-Q1

ACTIVE
Data sheet Order now

Product details

Vin (min) (V) 1.5 Vin (max) (V) 42 Operating temperature range (°C) -40 to 150 Control mode current mode Topology Boost Rating Automotive Vout (min) (V) 6 Vout (max) (V) 11.5 Features Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Nonsynchronous rectification, Spread Spectrum Iq (typ) (µA) 15 Duty cycle (max) (%) 87 TI functional safety category Functional Safety-Capable
Vin (min) (V) 1.5 Vin (max) (V) 42 Operating temperature range (°C) -40 to 150 Control mode current mode Topology Boost Rating Automotive Vout (min) (V) 6 Vout (max) (V) 11.5 Features Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Nonsynchronous rectification, Spread Spectrum Iq (typ) (µA) 15 Duty cycle (max) (%) 87 TI functional safety category Functional Safety-Capable
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
    • 6.0 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 and non-wettable flank options
  • Create a custom design using the LM51501-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
    • 6.0 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 and non-wettable flank options
  • Create a custom design using the LM51501-Q1 with the WEBENCH Power Designer

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 backup 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 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. A 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, the device can be used to control a disconnect switch to protect the backup-battery.

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 backup 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 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. A 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, the device can be used to control a disconnect switch to protect the backup-battery.
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Technical documentation

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Type Title Date
* Data sheet LM51501-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

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

LM51501-Q1 PSpice Transient Model

SNVMBH5.ZIP (150 KB) - PSpice Model
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Gerber file

LM51501-Q1 Boost Controller Quick Start Calculator (Rev. A)

SNVC217A.ZIP (275 KB)
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Package Pins CAD symbols, footprints & 3D models
WQFN (RUM) 16 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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