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LM26480-Q1 Scheda tecnica(PDF) 1 Page - Texas Instruments

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Il numero della parte LM26480-Q1
Spiegazioni elettronici  LM26480-Q1 Externally Programmable Dual High-Current Step-Down DC-DC and Dual Linear Regulators
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LM26480-Q1 Scheda tecnica(HTML) 1 Page - Texas Instruments

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LM26480
LDO1_FB
VOUTLDO2
GND_L
VOUTLDO1
ENLDO1
LDO2_FB
VIN1
SW1
FB1
VINLDO2
SW2
FB2
VIN2
GND_SW2
10 µF
ENSW1
2.2 µH
ENSW2
GND_SW1
VINLDO1
SYNC
nPOR
ENLDO2
GND_C
AVDD
VINLDO12
R1
R2
0.47 µF
0.47 µF
1 µF
R2
R1
1 µF
10 µF
R2
C2
C1
R1
R1
10 µF
2.2 µH
10 µF
1 µF
R2
C1
C2
1 µF
100 k
Ÿ
DAP
Copyright © 2016, Texas Instruments Incorporated
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Design
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
LM26480-Q1
SNVSA58A – JANUARY 2015 – REVISED JUNE 2016
LM26480-Q1 Externally Programmable Dual High-Current Step-Down DC-DC and Dual
Linear Regulators
1
1 Features
1
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 Converter (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
2 Applications
Core Digital Power
Applications Processors
Peripheral I/O Power
3 Description
The
LM26480-Q1
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.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM26480-Q1
WQFN (24)
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
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Simplified Schematic


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