SNVS543I – JANUARY 2008 – REVISED MAY 2013
LM26480 Externally Programmable Dual High-Current Step-Down DC/DC and Dual Linear
Regulators
Check for Samples:
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FEATURES
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Compatible with Advanced Applications
Processors and FPGAs
2 LDOs for Powering Internal Processor
Functions and I/Os
Precision Internal Reference
Thermal Overload Protection
Current Overload Protection
24-lead 4 × 4 × 0.8mm WQFN Package
External Power-On-Reset Function for Buck1
and Buck2
Undervoltage Lock-Out Detector to Monitor
Input Supply Voltage
Note: LM26480Q is an Automotive-Grade
Product that is AECQ-100 Grade 1 Qualified.
DESCRIPTION
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
300 mA linear regulators. The LM26480 is offered in
a tiny 4 x 4 x 0.8mm WQFN-24 pin package.
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KEY SPECIFICATIONS
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Step-Down DC/DC Converter (Buck)
– 1.5A output current
– V
OUT
from:
– Buck1 : 0.8V–2.0V @ 1.5A
– Buck2 : 1.0V–3.3V @ 1.5A
– Up to 96% efficiency
– ±3% FB voltage accuracy
– 2 MHz PWM switching frequency
– PWM - PFM automatic mode change under
low loads
– Automatic soft start
Linear Regulators (LDO)
– V
OUT
of 1.0V–3.5V
– ±3% FB voltage accuracy
– 300 mA output current
– 25 mV (typ) dropout
APPLICATIONS
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Core Digital Power
Applications Processors
Peripheral I/O Power
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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Copyright © 2008–2013, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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