SNVSAP6 September   2017 LM5150-Q1

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Enable (EN Pin)
      2. 7.3.2  High Voltage VCC Regulator (PVCC, AVCC Pin)
      3. 7.3.3  Power-On Voltage Selection (VSET Pin)
      4. 7.3.4  Switching Frequency (RT Pin)
      5. 7.3.5  Clock Synchronization (SYNC Pin in SS Configuration)
      6. 7.3.6  Current Sense, Slope Compensation, and PWM (CS Pin)
      7. 7.3.7  Current Limit (CS Pin)
      8. 7.3.8  Feedback and Error Amplifier (COMP Pin)
      9. 7.3.9  Automatic Wake-Up and Standby
      10. 7.3.10 Boost Status Indicator (STATUS Pin)
      11. 7.3.11 Maximum Duty Cycle Limit, Minimum Input Supply Voltage
      12. 7.3.12 MOSFET Driver (LO Pin)
      13. 7.3.13 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode
      2. 7.4.2 Standby Mode
      3. 7.4.3 Wake-Up Mode
        1. 7.4.3.1 Start-Stop Configuration (SS Configuration)
        2. 7.4.3.2 Emergency-Call Configuration (EC Configuration)
  8. Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Bypass Switch / Disconnection Switch Control
      2. 8.1.2 Loop Response
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1  Custom Design With WEBENCH® Tools
        2. 8.2.2.2  RSET Resistor
        3. 8.2.2.3  RT Resistor
        4. 8.2.2.4  Inductor Selection (LM)
        5. 8.2.2.5  Current Sense (RS)
        6. 8.2.2.6  Slope Compensation Ramp (RSL)
        7. 8.2.2.7  Output Capacitor (COUT)
        8. 8.2.2.8  Loop Compensation Component Selection and Maximum ESR
        9. 8.2.2.9  PVCC Capacitor, AVCC Capacitor, and AVCC Resistor
        10. 8.2.2.10 VOUT Filter (CVOUT, RVOUT)
        11. 8.2.2.11 Input Capacitor
        12. 8.2.2.12 MOSFET Selection
        13. 8.2.2.13 Diode Selection
        14. 8.2.2.14 Efficiency Estimation
      3. 8.2.3 Application Curves
    3. 8.3 System Examples
      1. 8.3.1 Lower Standby Threshold in SS Configuration
      2. 8.3.2 Dithering Using Dither Enabled Device
      3. 8.3.3 Clock Synchronization With LM5140
      4. 8.3.4 Dynamic Frequency Change
      5. 8.3.5 Dithering Using an External Clock
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
        1. 11.1.1.1 Custom Design With WEBENCH® Tools
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • RUM|16
Thermal pad, mechanical data (Package|Pins)
Orderable Information

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

Applications

  • Automotive Start-Stop System
  • Automotive Emergency Call System
  • Battery-Powered Boost Converters

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.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
LM5150-Q1 WQFN (16) 4.00 mm × 4.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application Circuit

LM5150-Q1 LM5150-Q1-typical-application-snvsap6.gif

Efficiency (VLOAD= 6.8 V, FSW= 440 kHz)

LM5150-Q1 D008_SNVSAP6.gif