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LM51561HPWPR +BOM

2.2-MHz wide VIN nonsynchronous boost, flyback, & SEPIC controller with spread spectrum and hiccup

LM51561HPWPR General Description

With the ability to start up from a 1-cell battery at just 2.97 V, the LM51561HPWPR offers reliable performance even in low-power situations. Additionally, it can operate with an input supply voltage as low as 1.5 V, providing flexibility and efficiency in power management. By ensuring seamless transitions and stable operation, this boost controller simplifies the design process for engineers

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Key Features

  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Suited for wide input operating range battery applications
    • 3.5-V to 60-V Operating range (65-V abs max)
    • 2.97-V to 16-V when BIAS = VCC
    • Minimum boost supply voltage 1.5 V when BIAS ≥ 3.5 V
    • Input transient protection up to 65 V
    • Minimized battery drain
      • Low shutdown current ( IQ ≤ 2.6 µA )
      • Low operating current ( IQ ≤ 490 µA )
  • Small solution size and low cost
    • Maximum switching frequency of 2.2 MHz
    • Integrated error amplifier allows primary-side regulation without optocoupler (flyback)
  • EMI mitigation
    • Selectable dual random spread spectrum
  • Higher efficiency with low-power dissipation
    • 100-mV ±7% accurate current limit threshold
    • Strong 1.5-A peak standard MOSFET driver
    • Supports external VCC supply
  • Avoid AM band interference and crosstalk
    • Optional clock synchronization
    • Dynamically programmable switching frequency from 100 kHz to 2.2 MHz
  • Integrated protection features
    • Constant peak current limiting over input voltage
    • Optional hiccup mode overload protection (see the Device Comparison Table)
    • Programmable line UVLO
    • OVP protection
    • Thermal shutdown
  • Accurate ±1% accuracy feedback reference
  • Programmable extra slope compensation
  • Adjustable soft start
  • PGOOD indicator
  • 14-Pin HTSSOP package (5.0 mm × 4.4 mm)
  • Create a custom design using the LM5156xH with the WEBENCH power designer
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Specifications

Source Content uid LM51561HPWPR Pbfree Code Yes
Part Life Cycle Code Active Reach Compliance Code compliant
ECCN Code EAR99 HTS Code 8542.39.00.01
Date Of Intro 2020-09-27 Analog IC - Other Type SWITCHING CONTROLLER
Control Mode CURRENT-MODE Control Technique PULSE WIDTH MODULATION
JESD-30 Code R-PDSO-G14 Moisture Sensitivity Level 3
Number of Functions 1 Number of Outputs 1
Number of Terminals 14 Peak Reflow Temperature (Cel) 260
Surface Mount YES Switcher Configuration BUCK-BOOST
Temperature Grade AUTOMOTIVE Terminal Finish NICKEL PALLADIUM GOLD
Terminal Form GULL WING Terminal Position DUAL
Time@Peak Reflow Temperature-Max (s) 30

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