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LM26480-Q1

ACTIVE

Externally configurable dual 1.5A step-down DC/DC and dual 300mA linear regulators

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Data sheet

LM26480-Q1

ACTIVE
Data sheet Order now

Product details

Product type Processor and FPGA Regulated outputs (#) 4 Step-down DC/DC converter 2 Step-up DC/DC converter 0 LDO 2 Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (min) (V) 1 Vout (max) (V) 3.3 Iout (max) (A) 1.5 Configurability Hardware configurable Features Enable, Light-load efficiency, Power good, Synchronous rectification, UVLO fixed Rating Automotive Operating temperature range (°C) -40 to 125 Step-down DC/DC controller 0 Step-up DC/DC controller 0 Iq (typ) (mA) 0.033 Switching frequency (max) (kHz) 2500 Switching frequency (typ) (kHz) 2100
Product type Processor and FPGA Regulated outputs (#) 4 Step-down DC/DC converter 2 Step-up DC/DC converter 0 LDO 2 Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (min) (V) 1 Vout (max) (V) 3.3 Iout (max) (A) 1.5 Configurability Hardware configurable Features Enable, Light-load efficiency, Power good, Synchronous rectification, UVLO fixed Rating Automotive Operating temperature range (°C) -40 to 125 Step-down DC/DC controller 0 Step-up DC/DC controller 0 Iq (typ) (mA) 0.033 Switching frequency (max) (kHz) 2500 Switching frequency (typ) (kHz) 2100
WQFN (RTW) 24 16 mm² (4 mm × 4 mm)
  • Qualified for Automotive Applications
  • AEC Q100-Qualified With the Following Results
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
  • Input Voltage: 2.8 V to 5.5 V
  • Compatible with Advanced Applications Processors and FPGAs
  • Two LDOs for Powering Internal Processor Functions and I/Os
  • Precision Internal Reference
  • Thermal Overload Protection
  • Current Overload Protection
  • External Power-On-Reset Function for Buck1 and Buck2
  • Undervoltage Lockout Detector to Monitor Input Supply Voltage
  • Step-Down DC-DC Converters (Buck)
    • 1.5-A Output Current
    • VOUT from:
    • Buck1 : 0.8 V to 2 V at 1.5 A
    • Buck2 : 1 V to 3.3 V at 1.5 A
    • Up to 96% efficiency
    • ±3% FB Voltage Accuracy
    • 2-MHz PWM Switching Frequency
    • PWM-to-PFM Automatic Mode Change Under Low Loads
    • Automatic Soft Start
  • Linear Regulators (LDO)
    • VOUT of 1 V to 3.5 V
    • ±3% FB Voltage Accuracy
    • 300-mA Output Current
    • 25-mV (Typical) Dropout
    • Create a Custom Design Using the LM26480-Q1 With the WEBENCH® Power Designer
  • Qualified for Automotive Applications
  • AEC Q100-Qualified With the Following Results
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
  • Input Voltage: 2.8 V to 5.5 V
  • Compatible with Advanced Applications Processors and FPGAs
  • Two LDOs for Powering Internal Processor Functions and I/Os
  • Precision Internal Reference
  • Thermal Overload Protection
  • Current Overload Protection
  • External Power-On-Reset Function for Buck1 and Buck2
  • Undervoltage Lockout Detector to Monitor Input Supply Voltage
  • Step-Down DC-DC Converters (Buck)
    • 1.5-A Output Current
    • VOUT from:
    • Buck1 : 0.8 V to 2 V at 1.5 A
    • Buck2 : 1 V to 3.3 V at 1.5 A
    • Up to 96% efficiency
    • ±3% FB Voltage Accuracy
    • 2-MHz PWM Switching Frequency
    • PWM-to-PFM Automatic Mode Change Under Low Loads
    • Automatic Soft Start
  • Linear Regulators (LDO)
    • VOUT of 1 V to 3.5 V
    • ±3% FB Voltage Accuracy
    • 300-mA Output Current
    • 25-mV (Typical) Dropout
    • Create a Custom Design Using the LM26480-Q1 With the WEBENCH® Power Designer

The LM26480-Q1 is an automotive-qualified multi-functional power management unit (PMU), optimized for low-power digital applications. This device integrates two highly efficient 1.5-A step-down DC-DC converters and two 300-mA linear regulators. The DC-DC buck converters provide typical efficiencies of 96%, allowing for minimal power consumption. Features include soft start, undervoltage lockout, current overload protection, thermal overload protection, and an internal power-on-reset (POR) circuit, which monitors the output voltage levels on bucks 1 and 2.

The LM26480-Q1 is an automotive-qualified multi-functional power management unit (PMU), optimized for low-power digital applications. This device integrates two highly efficient 1.5-A step-down DC-DC converters and two 300-mA linear regulators. The DC-DC buck converters provide typical efficiencies of 96%, allowing for minimal power consumption. Features include soft start, undervoltage lockout, current overload protection, thermal overload protection, and an internal power-on-reset (POR) circuit, which monitors the output voltage levels on bucks 1 and 2.

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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet LM26480-Q1 Dual 2-MHz, 1.5-A Buck Regulators and Dual 300-mA LDOs With Individual Enable and Power Good for Automotive Applications datasheet (Rev. C) PDF | HTML Nov 20, 2017
EVM User's guide Eval Kit for LM26480 Dual DC/DC Buck Regulatrs w/Dual Low-Noise Linear Regulator (Rev. D) Apr 18, 2013
Application note Power Supply Design Considerations for Modern FPGAs (Power Designer 121) Feb 2, 2010

Design & development

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Evaluation board

LM26480SQ-AAEV — LM26480SQ-AA evaluation module: configurable power management IC (PMIC) with 2 DC/DCs and 2 LDOs

The LM26480 is a multi-functional Power Management Unit, optimized for low-power digital applications. This device integrates two highly efficient 1.5A step-down DC/DC converters and two 300mA linear regulators. The LM26480 is offered in a tiny 4 x 4 x 0.8mm LLP-24 pin package.

The LM26480 (...)

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LM26480 Unencrypted PSpice Transient Model Package (Rev. B)

SNVM049B.ZIP (665 KB) - PSpice model
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WQFN (RTW) 24 Ultra Librarian
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