Product details

Regulated outputs (#) 4 Vin (Min) (V) 2.8 Vin (Max) (V) 5.5 Iout (Max) (A) 1.5 Rating Catalog Step-down DC/DC controller 0 Step-down DC/DC converter 2 Step-up DC/DC controller 0 Step-up DC/DC converter 0 LDO 2 Iq (Typ) (mA) 0.033 Features Enable, Light Load Efficiency, Power Good, Synchronous Rectification, UVLO Fixed Operating temperature range (C) -40 to 85 Processor name Generic Processor supplier Generic Configurability Hardware configurable
Regulated outputs (#) 4 Vin (Min) (V) 2.8 Vin (Max) (V) 5.5 Iout (Max) (A) 1.5 Rating Catalog Step-down DC/DC controller 0 Step-down DC/DC converter 2 Step-up DC/DC controller 0 Step-up DC/DC converter 0 LDO 2 Iq (Typ) (mA) 0.033 Features Enable, Light Load Efficiency, Power Good, Synchronous Rectification, UVLO Fixed Operating temperature range (C) -40 to 85 Processor name Generic Processor supplier Generic Configurability Hardware configurable
WQFN (RTW) 24 16 mm² 4 x 4
  • 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
  • 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

The LM26480 is a 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 is a 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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Type Title Date
* Data sheet LM26480 Dual 2-MHz, 1.5-A Buck Regulators and Dual 300-mA LDOs With Individual Enable and Power Good datasheet (Rev. N) PDF | HTML 27 Jun 2017
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Technical article Integrated power devices simplify FPGA and SoC designs 11 Jan 2017
White paper Power Management IC (PMIC) Guide for Automotive (Rev. A) 29 Oct 2014
Application note Enhancing Bit-Flip Recovery and PMU Design For Defense/Industrial Applications 14 Aug 2014
Technical article Evolution has been good for PMUs 14 Aug 2013
User guide Eval Kit for LM26480 Dual DC/DC Buck Regulatrs w/Dual Low-Noise Linear Regulator (Rev. D) 18 Apr 2013

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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Simulation model

LM26480 Unencrypted PSpice Transient Model Package (Rev. B) LM26480 Unencrypted PSpice Transient Model Package (Rev. B)

Simulation model

LM26480 TINA-TI Transient Spice Model LM26480 TINA-TI Transient Spice Model

Simulation model

LM26480 LDO1 TINA-TI Transient Reference Design LM26480 LDO1 TINA-TI Transient Reference Design

Simulation model

LM26480 LDO2 TINA-TI Transient Reference Design LM26480 LDO2 TINA-TI Transient Reference Design

Simulation model

LM26480 BUCK2 TINA-TI Transient Reference Design LM26480 BUCK2 TINA-TI Transient Reference Design

Simulation model

LM26480 BUCK1 TINA-TI Transient Reference Design LM26480 BUCK1 TINA-TI Transient Reference Design

Package Pins Download
WQFN (RTW) 24 View options

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