Wide VIN Automotive Low IQ Boost Controller - LM5150-Q1

LM5150-Q1 (ACTIVE)

Wide VIN Automotive Low IQ Boost Controller

 

Description

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.

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
  • 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 Flanks
  • Create a Custom Design Using the LM5150-Q1 With the WEBENCH® Power Designer

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Parametrics Compare all products in Boost Controller (External Switch)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Switch Current Limit (Typ) (A)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Features
Iout (Max) (A)
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
LM5150-Q1 LM25122-Q1 LM3481-Q1 LM5022-Q1 LM5122-Q1 TPS40211-Q1
1.5    3    2.97    3    3    4.5   
42    42    48    60    65    52   
6.8    3    1.275    1.25    3    6.4   
10.5    50    500    300    100    60   
15    20    10    10    20    6   
1    1    1    1    1    1   
220    50    100    170    50    35   
2300    600    1000    2200    1000    1000   
1.8    4    3.7    3.5    4    0.53   
Adjustable Current Limit
Enable
Frequency Synchronization
Light Load Efficiency   
Enable
Frequency Synchronization
Phase Interleaving
Synchronous Rectification   
Adjustable Current Limit
Enable
Frequency Synchronization
Light Load Efficiency
Pre-Bias Start-Up
UVLO Adjustable   
Enable
Frequency Synchronization
UVLO Adjustable   
Enable
Frequency Synchronization
Phase Interleaving
Synchronous Rectification
UVLO Adjustable   
Enable
Frequency Synchronization   
15    20    10    10    20    6   
87    100    85    90    100    95   
-40 to 150    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125   
Automotive    Automotive    Automotive    Automotive    Automotive    Automotive   
WQFN    HTSSOP    VSSOP    VSSOP    HTSSOP    MSOP-PowerPAD   
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WEBENCH® Designer LM5150-Q1

  Min   Max Range
Vin  V 1.5 to 42.0V
Vout  V 5 to 10.5V
Iout  A ≤ 7.35A
Ambient Temp  °C -40 to 125°C


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