LM26480

ACTIVE

Dual 2MHz 1.5A buck regulators and dual 300mA LDOs with individual enable and power good

Product details

Regulated outputs (#) 4 Configurability Hardware configurable Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (min) (V) 1 Vout (max) (V) 3.3 Iout (max) (A) 1.5 Features Enable, Light-load efficiency, Power good, Synchronous rectification, UVLO fixed Step-up DC/DC converter 0 Step-down DC/DC converter 2 Step-down DC/DC controller 0 Step-up DC/DC controller 0 LDO 2 Iq (typ) (mA) 0.033 Rating Catalog Switching frequency (max) (kHz) 2500 Operating temperature range (°C) -40 to 85 Processor supplier Generic Processor name Generic Switching frequency (typ) (kHz) 2100 Product type Processor and FPGA
Regulated outputs (#) 4 Configurability Hardware configurable Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (min) (V) 1 Vout (max) (V) 3.3 Iout (max) (A) 1.5 Features Enable, Light-load efficiency, Power good, Synchronous rectification, UVLO fixed Step-up DC/DC converter 0 Step-down DC/DC converter 2 Step-down DC/DC controller 0 Step-up DC/DC controller 0 LDO 2 Iq (typ) (mA) 0.033 Rating Catalog Switching frequency (max) (kHz) 2500 Operating temperature range (°C) -40 to 85 Processor supplier Generic Processor name Generic Switching frequency (typ) (kHz) 2100 Product type Processor and FPGA
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 PDF | HTML 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
User guide Eval Kit for LM26480 Dual DC/DC Buck Regulatrs w/Dual Low-Noise Linear Regulator (Rev. D) 18 Apr 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

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 (...)

User guide: PDF
Not available on TI.com
Simulation model

LM26480 BUCK1 TINA-TI Transient Reference Design

SNVMB54.TSC (801 KB) - TINA-TI Reference Design
Simulation model

LM26480 BUCK2 TINA-TI Transient Reference Design

SNVMB53.TSC (798 KB) - TINA-TI Reference Design
Simulation model

LM26480 LDO1 TINA-TI Transient Reference Design

SNVMB51.TSC (765 KB) - TINA-TI Reference Design
Simulation model

LM26480 LDO2 TINA-TI Transient Reference Design

SNVMB52.TSC (778 KB) - TINA-TI Reference Design
Simulation model

LM26480 TINA-TI Transient Spice Model

SNVMB50.ZIP (96 KB) - TINA-TI Spice Model
Simulation model

LM26480 Unencrypted PSpice Transient Model Package (Rev. B)

SNVM049B.ZIP (665 KB) - PSpice Model
Package Pins Download
WQFN (RTW) 24 View options

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