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LM2854MHX-500 Folha de dados(PDF) 5 Page - Texas Instruments

Nome de Peças LM2854MHX-500
Descrição Electrónicos  Synchronous SIMPLE SWITCHER Buck Regulator
Download  33 Pages
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

LM2854MHX-500 Folha de dados(HTML) 5 Page - Texas Instruments

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LM2854
www.ti.com
SNVS560D – MARCH 2008 – REVISED JANUARY 2016
Product Folder Links: LM2854
Submit Documentation Feedback
Copyright © 2008–2016, Texas Instruments Incorporated
(1)
Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are ensured through correlation
using Statistical Quality Control (SQC) methods. Limits are used to calculate Average Outgoing Quality Level (AOQL).
(2)
Typical numbers are at 25°C and represent the most likely parametric norm.
(3)
VREF measured in a non-switching, closed-loop configuration.
6.5 Electrical Characteristics
All Typical specifications are for TJ = 25°C only; all Maximum and Minimum limits apply over the operating junction
temperature range TJ range of –40°C to 125°C. Minimum and maximum limits are ensured through test, design, or statistical
correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes
only. AVIN = PVIN = EN = 5 V, unless otherwise indicated in the Test Conditions column.
PARAMETER
TEST CONDITIONS
MIN(1)
TYP(2)
MAX(1)
UNIT
SYSTEM PARAMETERS
VREF
Reference Voltage(3)
Measured at the FB pin
0.790
0.8
0.808
V
ΔVREF/ΔAVIN
Line Regulation(3)
ΔAVIN = 2.95 V to 5.50 V
0.04%
0.6%
ΔVREF/ΔIO
Load Regulation
Normal operation
0.25
mV/A
VON
UVLO Threshold (AVIN)
Rising
2.6
2.95
V
Falling hysteresis
25
170
375
mV
RDS(ON)-P
PFET On Resistance
ISW = 4 A
35
65
m
RDS(ON)-N
NFET On Resistance
ISW = 4 A
34
65
m
ISS
Soft-Start Current
2
µA
ICL
Peak Current Limit Threshold
4.5
6
6.7
A
IQ
Operating Current
Non-switching
1.7
3
mA
ISD
Shut Down Quiescent Current
EN = 0 V
230
500
µA
PWM SECTION
fSW
Switching Frequency
1-MHz option
800
1050
1160
kHz
500-kHz option
400
525
580
kHz
Drange
PWM Duty Cycle Range
0%
100%
ENABLE CONTROL
VIH
EN Pin Rising Threshold
0.8
1.23
1.65
V
VEN(HYS)
EN Pin Hysteresis
150
mV
THERMAL CONTROL
TSD
TJ for Thermal Shutdown
165
°C
TSD-HYS
Hysteresis for Thermal Shutdown
10
°C


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